TV's have high voltage on the CRT. Wires to this area of the tube will be well insulated. Don't touch components inside the dog cage with power on.
Believe 30A1 uses a 10BP4 picture tube? If so it's glass and shouldn't be a problem. If the TV has a metal picture tube the entire cone will have high voltage.
With a good picture tube voltage will discharge when power is turned off. If the tube is disconnected or has no emission high voltage can still be present. A screw driver can be used to discharge the anode connection. A lot of us don't bother but know not to touch the anode connection.
Norm
:Hi all..For the following subject I realize this is a radio forum ..but since most older radio repairmen also worked on TVs I am hoping some of you could give me a few suggestions. A while back I bought for $25.00 a model 30A1 1948 Admiral TV...and recently recapped ALL caps and checked/repaced resistors..tested all tubes..and the main tv tube was replaced with a new (identical) one in the 1960s. I am about to slowly bring up power on my variac...but before I do so I poured over the schematics and noticed there is 9000v on the outside of the main picture tube....EEEEK... and I am aware of the high voltage on various other parts..especially inside the "dog cage". This is the first TV I have restored (restored MANY radios) and I am... to be honest.. some-what scared to power this thing up to test it ....I don't want to just go probing around blindly if i need to make an adjustment...Also once I shut power off I want to discharge caps from top of chassis (if I can) so I do not have to handel a chassis that is "charged up" For those of you who have the experience in working on such I would GREATLY appreciate you helpful hints and suggestions....THANK YOU!!! (If you could..please "dumb it down" for me and not use to much technical terms" )
:
Yes, that's the wire. Since your picture tube is metal coated it's not the metal type. This metal coating is grounded and forms a capacitor for the high voltage.
If the picture tube doesn't draw current a charge will build up between the outside coating and anode connection, wire going to side of the picture tube.
Norm
:Thanks Norm ..Yes this picture tube is metal coated... I currently have the metal frame of the "dog cage" off...I think I should put it back on LOL befor powering it up....Also, the wire that goes to the tube comming out of the dog cage plugs into picture tube..is that the one you are talking about that is high voltage???
::George
::
::TV's have high voltage on the CRT. Wires to this area of the tube will be well insulated. Don't touch components inside the dog cage with power on.
::
::Believe 30A1 uses a 10BP4 picture tube? If so it's glass and shouldn't be a problem. If the TV has a metal picture tube the entire cone will have high voltage.
::
::With a good picture tube voltage will discharge when power is turned off. If the tube is disconnected or has no emission high voltage can still be present. A screw driver can be used to discharge the anode connection. A lot of us don't bother but know not to touch the anode connection.
::
::Norm
::
::
::
:::Hi all..For the following subject I realize this is a radio forum ..but since most older radio repairmen also worked on TVs I am hoping some of you could give me a few suggestions. A while back I bought for $25.00 a model 30A1 1948 Admiral TV...and recently recapped ALL caps and checked/repaced resistors..tested all tubes..and the main tv tube was replaced with a new (identical) one in the 1960s. I am about to slowly bring up power on my variac...but before I do so I poured over the schematics and noticed there is 9000v on the outside of the main picture tube....EEEEK... and I am aware of the high voltage on various other parts..especially inside the "dog cage". This is the first TV I have restored (restored MANY radios) and I am... to be honest.. some-what scared to power this thing up to test it ....I don't want to just go probing around blindly if i need to make an adjustment...Also once I shut power off I want to discharge caps from top of chassis (if I can) so I do not have to handel a chassis that is "charged up" For those of you who have the experience in working on such I would GREATLY appreciate you helpful hints and suggestions....THANK YOU!!! (If you could..please "dumb it down" for me and not use to much technical terms" )
:::
::
:
The B circuit is probably more dangerous than the high voltage circuit. Just be calm and cautious.
Also, when doing alignment on the set, it's nice to have a 5 inch picture tube to work with. I believe that the appropriate tube is the 5AXP4. Any alignments you make with this tube will produce an equivalent alignment of appropriate picture size for the 10 inch tube. I have one, but it's in the basement, so I don't know for sure what the number is.
T.
:The high voltage is developed from the rather high frequency horizontal scanning signal. This allows for filtering by a very small capacitor (which won't hold much of a charge...the capacitor is, perhaps, a doorknob capacitor within the metal cage, and the capacitance between the inside and outside coating of the picture tube, not amounting to more than .01 MFD). This high voltage is further fed through a very high resistance resistor (usually 1 Megohm). Due to this circuit design, the high voltage is of very low current, and is easily shorted out, loaded, etc. This makes it far safer than the earlier mains fed high voltage television circuits. You do not have to worry about it blasting Tesla style arcs all over the room. The ignition system in your car produces more voltage, at about an equal or greater current. If you've ever been zapped by a spark plug wire, you know what that feels like. It most likely won't kill you, but is painful. It can be fatal to people with heart conditions. Be cautious, but don't be scared. Power the set up. If anything bad happens, calmly remove power. I've had random arcing around my doorknob capacitor due to dirt (that I have since removed), and it was nothing more than some small static.
:
:The B circuit is probably more dangerous than the high voltage circuit. Just be calm and cautious.
:
:Also, when doing alignment on the set, it's nice to have a 5 inch picture tube to work with. I believe that the appropriate tube is the 5AXP4. Any alignments you make with this tube will produce an equivalent alignment of appropriate picture size for the 10 inch tube. I have one, but it's in the basement, so I don't know for sure what the number is.
:
:T.
:
Reading posts looks like the picture tube is dark. Be sure brightness is all the way up and you already moved the ion trap. Once moved, if it's not in the right place, the tube will be dark.
You don't need to receive a signal to have the screen light.
First you need high voltage. If you have a neon light, NE2, NE51 etc, it can detect high voltage. Just being near high voltage should light the lamp. You should also be able to hear the horizontal circuit operating. It operates at 15750 cycles. If you can't hear this high frequency sometimes there is a hissing sound from high voltage.
Have caps been replaced in the horizontal section? Horizontal output tubes are usually the first tubes to get weak. They can test good and still not operate.
Norm
::George
::
:: Yes, that's the wire. Since your picture tube is metal coated it's not the metal type. This metal coating is grounded and forms a capacitor for the high voltage.
::
:: If the picture tube doesn't draw current a charge will build up between the outside coating and anode connection, wire going to side of the picture tube.
::
::Norm
::
:::Thanks Norm ..Yes this picture tube is metal coated... I currently have the metal frame of the "dog cage" off...I think I should put it back on LOL befor powering it up....Also, the wire that goes to the tube comming out of the dog cage plugs into picture tube..is that the one you are talking about that is high voltage???
::::George
::::
::::TV's have high voltage on the CRT. Wires to this area of the tube will be well insulated. Don't touch components inside the dog cage with power on.
::::
::::Believe 30A1 uses a 10BP4 picture tube? If so it's glass and shouldn't be a problem. If the TV has a metal picture tube the entire cone will have high voltage.
::::
::::With a good picture tube voltage will discharge when power is turned off. If the tube is disconnected or has no emission high voltage can still be present. A screw driver can be used to discharge the anode connection. A lot of us don't bother but know not to touch the anode connection.
::::
::::Norm
::::
::::
::::
:::::Hi all..For the following subject I realize this is a radio forum ..but since most older radio repairmen also worked on TVs I am hoping some of you could give me a few suggestions. A while back I bought for $25.00 a model 30A1 1948 Admiral TV...and recently recapped ALL caps and checked/repaced resistors..tested all tubes..and the main tv tube was replaced with a new (identical) one in the 1960s. I am about to slowly bring up power on my variac...but before I do so I poured over the schematics and noticed there is 9000v on the outside of the main picture tube....EEEEK... and I am aware of the high voltage on various other parts..especially inside the "dog cage". This is the first TV I have restored (restored MANY radios) and I am... to be honest.. some-what scared to power this thing up to test it ....I don't want to just go probing around blindly if i need to make an adjustment...Also once I shut power off I want to discharge caps from top of chassis (if I can) so I do not have to handel a chassis that is "charged up" For those of you who have the experience in working on such I would GREATLY appreciate you helpful hints and suggestions....THANK YOU!!! (If you could..please "dumb it down" for me and not use to much technical terms" )
:::::
::::
:::
::
:
:Hi all..For the following subject I realize this is a radio forum ..but since most older radio repairmen also worked on TVs I am hoping some of you could give me a few suggestions. A while back I bought for $25.00 a model 30A1 1948 Admiral TV...and recently recapped ALL caps and checked/repaced resistors..tested all tubes..and the main tv tube was replaced with a new (identical) one in the 1960s. I am about to slowly bring up power on my variac...but before I do so I poured over the schematics and noticed there is 9000v on the outside of the main picture tube....EEEEK... and I am aware of the high voltage on various other parts..especially inside the "dog cage". This is the first TV I have restored (restored MANY radios) and I am... to be honest.. some-what scared to power this thing up to test it ....I don't want to just go probing around blindly if i need to make an adjustment...Also once I shut power off I want to discharge caps from top of chassis (if I can) so I do not have to handel a chassis that is "charged up" For those of you who have the experience in working on such I would GREATLY appreciate you helpful hints and suggestions....THANK YOU!!! (If you could..please "dumb it down" for me and not use to much technical terms" )
:
:Ok so I slowly brought TV up on variac....I get no picture and I am picking up radio stations...What gives?
:
:
:
:
::Hi all..For the following subject I realize this is a radio forum ..but since most older radio repairmen also worked on TVs I am hoping some of you could give me a few suggestions. A while back I bought for $25.00 a model 30A1 1948 Admiral TV...and recently recapped ALL caps and checked/repaced resistors..tested all tubes..and the main tv tube was replaced with a new (identical) one in the 1960s. I am about to slowly bring up power on my variac...but before I do so I poured over the schematics and noticed there is 9000v on the outside of the main picture tube....EEEEK... and I am aware of the high voltage on various other parts..especially inside the "dog cage". This is the first TV I have restored (restored MANY radios) and I am... to be honest.. some-what scared to power this thing up to test it ....I don't want to just go probing around blindly if i need to make an adjustment...Also once I shut power off I want to discharge caps from top of chassis (if I can) so I do not have to handel a chassis that is "charged up" For those of you who have the experience in working on such I would GREATLY appreciate you helpful hints and suggestions....THANK YOU!!! (If you could..please "dumb it down" for me and not use to much technical terms" )
::
:
:Your tuner may be out of adjustment.
:I just finshed one of these a few weeks ago, I got sound but no picture except when I slightly pressed down on the tuner knob. There is a screw attached to the detent arm of the drum, loosen it then gently tap the arm back . Also make sure you clean the tuner contacts accessable from the side of the chassis and ALL contacts on the drum.
:The adjustment of my tuner involved a hammer, it may require a bit of force. Mine works on channel 4 with a vcr but none of the other channels work , i'm perfectly happy with that.
:Good luck
:
:
::Ok so I slowly brought TV up on variac....I get no picture and I am picking up radio stations...What gives?
::
::
::
::
:::Hi all..For the following subject I realize this is a radio forum ..but since most older radio repairmen also worked on TVs I am hoping some of you could give me a few suggestions. A while back I bought for $25.00 a model 30A1 1948 Admiral TV...and recently recapped ALL caps and checked/repaced resistors..tested all tubes..and the main tv tube was replaced with a new (identical) one in the 1960s. I am about to slowly bring up power on my variac...but before I do so I poured over the schematics and noticed there is 9000v on the outside of the main picture tube....EEEEK... and I am aware of the high voltage on various other parts..especially inside the "dog cage". This is the first TV I have restored (restored MANY radios) and I am... to be honest.. some-what scared to power this thing up to test it ....I don't want to just go probing around blindly if i need to make an adjustment...Also once I shut power off I want to discharge caps from top of chassis (if I can) so I do not have to handel a chassis that is "charged up" For those of you who have the experience in working on such I would GREATLY appreciate you helpful hints and suggestions....THANK YOU!!! (If you could..please "dumb it down" for me and not use to much technical terms" )
:::
::
:
:I have mine hooked up to a digital coverter box ..Shouldn't that work?
:
:
:
::Your tuner may be out of adjustment.
::I just finshed one of these a few weeks ago, I got sound but no picture except when I slightly pressed down on the tuner knob. There is a screw attached to the detent arm of the drum, loosen it then gently tap the arm back . Also make sure you clean the tuner contacts accessable from the side of the chassis and ALL contacts on the drum.
::The adjustment of my tuner involved a hammer, it may require a bit of force. Mine works on channel 4 with a vcr but none of the other channels work , i'm perfectly happy with that.
::Good luck
::
::
:::Ok so I slowly brought TV up on variac....I get no picture and I am picking up radio stations...What gives?
:::
:::
:::
:::
::::Hi all..For the following subject I realize this is a radio forum ..but since most older radio repairmen also worked on TVs I am hoping some of you could give me a few suggestions. A while back I bought for $25.00 a model 30A1 1948 Admiral TV...and recently recapped ALL caps and checked/repaced resistors..tested all tubes..and the main tv tube was replaced with a new (identical) one in the 1960s. I am about to slowly bring up power on my variac...but before I do so I poured over the schematics and noticed there is 9000v on the outside of the main picture tube....EEEEK... and I am aware of the high voltage on various other parts..especially inside the "dog cage". This is the first TV I have restored (restored MANY radios) and I am... to be honest.. some-what scared to power this thing up to test it ....I don't want to just go probing around blindly if i need to make an adjustment...Also once I shut power off I want to discharge caps from top of chassis (if I can) so I do not have to handel a chassis that is "charged up" For those of you who have the experience in working on such I would GREATLY appreciate you helpful hints and suggestions....THANK YOU!!! (If you could..please "dumb it down" for me and not use to much technical terms" )
::::
:::
::
:
:Yes, but the tuner may still be misaligned. I had mine hooked up to a vcr , but because the tuner was misaligned it didnt work.
:
::I have mine hooked up to a digital coverter box ..Shouldn't that work?
::
::
::
:::Your tuner may be out of adjustment.
:::I just finshed one of these a few weeks ago, I got sound but no picture except when I slightly pressed down on the tuner knob. There is a screw attached to the detent arm of the drum, loosen it then gently tap the arm back . Also make sure you clean the tuner contacts accessable from the side of the chassis and ALL contacts on the drum.
:::The adjustment of my tuner involved a hammer, it may require a bit of force. Mine works on channel 4 with a vcr but none of the other channels work , i'm perfectly happy with that.
:::Good luck
:::
:::
::::Ok so I slowly brought TV up on variac....I get no picture and I am picking up radio stations...What gives?
::::
::::
::::
::::
:::::Hi all..For the following subject I realize this is a radio forum ..but since most older radio repairmen also worked on TVs I am hoping some of you could give me a few suggestions. A while back I bought for $25.00 a model 30A1 1948 Admiral TV...and recently recapped ALL caps and checked/repaced resistors..tested all tubes..and the main tv tube was replaced with a new (identical) one in the 1960s. I am about to slowly bring up power on my variac...but before I do so I poured over the schematics and noticed there is 9000v on the outside of the main picture tube....EEEEK... and I am aware of the high voltage on various other parts..especially inside the "dog cage". This is the first TV I have restored (restored MANY radios) and I am... to be honest.. some-what scared to power this thing up to test it ....I don't want to just go probing around blindly if i need to make an adjustment...Also once I shut power off I want to discharge caps from top of chassis (if I can) so I do not have to handel a chassis that is "charged up" For those of you who have the experience in working on such I would GREATLY appreciate you helpful hints and suggestions....THANK YOU!!! (If you could..please "dumb it down" for me and not use to much technical terms" )
:::::
::::
:::
::
:
:Ok I will "play" with tuner...but even if tuner is not working should i get something on my screen because right now I get 100% nothing...dark...The picture tube was replaced in the early 60s with a new one...but I think it might be bad...hmmmm
:
::Yes, but the tuner may still be misaligned. I had mine hooked up to a vcr , but because the tuner was misaligned it didnt work.
::
:::I have mine hooked up to a digital coverter box ..Shouldn't that work?
:::
:::
:::
::::Your tuner may be out of adjustment.
::::I just finshed one of these a few weeks ago, I got sound but no picture except when I slightly pressed down on the tuner knob. There is a screw attached to the detent arm of the drum, loosen it then gently tap the arm back . Also make sure you clean the tuner contacts accessable from the side of the chassis and ALL contacts on the drum.
::::The adjustment of my tuner involved a hammer, it may require a bit of force. Mine works on channel 4 with a vcr but none of the other channels work , i'm perfectly happy with that.
::::Good luck
::::
::::
:::::Ok so I slowly brought TV up on variac....I get no picture and I am picking up radio stations...What gives?
:::::
:::::
:::::
:::::
::::::Hi all..For the following subject I realize this is a radio forum ..but since most older radio repairmen also worked on TVs I am hoping some of you could give me a few suggestions. A while back I bought for $25.00 a model 30A1 1948 Admiral TV...and recently recapped ALL caps and checked/repaced resistors..tested all tubes..and the main tv tube was replaced with a new (identical) one in the 1960s. I am about to slowly bring up power on my variac...but before I do so I poured over the schematics and noticed there is 9000v on the outside of the main picture tube....EEEEK... and I am aware of the high voltage on various other parts..especially inside the "dog cage". This is the first TV I have restored (restored MANY radios) and I am... to be honest.. some-what scared to power this thing up to test it ....I don't want to just go probing around blindly if i need to make an adjustment...Also once I shut power off I want to discharge caps from top of chassis (if I can) so I do not have to handel a chassis that is "charged up" For those of you who have the experience in working on such I would GREATLY appreciate you helpful hints and suggestions....THANK YOU!!! (If you could..please "dumb it down" for me and not use to much technical terms" )
::::::
:::::
::::
:::
::
:
:If your not getting anything, dont mess with the tuner yet. Make sure the yoke and ion trap are adjusted properly. The ion trap probably needs to be adjusted. It is on the neck of the picture tube, move it up and down the neck (should be near the end of the gun structure) and rotate it. The magnets may just be forcing the image off the screen. Adjust for maximum brightness and focus. Readjust if a bright dot is visable on the screen after turn off.
:Ian
:
::Ok I will "play" with tuner...but even if tuner is not working should i get something on my screen because right now I get 100% nothing...dark...The picture tube was replaced in the early 60s with a new one...but I think it might be bad...hmmmm
::
:::Yes, but the tuner may still be misaligned. I had mine hooked up to a vcr , but because the tuner was misaligned it didnt work.
:::
::::I have mine hooked up to a digital coverter box ..Shouldn't that work?
::::
::::
::::
:::::Your tuner may be out of adjustment.
:::::I just finshed one of these a few weeks ago, I got sound but no picture except when I slightly pressed down on the tuner knob. There is a screw attached to the detent arm of the drum, loosen it then gently tap the arm back . Also make sure you clean the tuner contacts accessable from the side of the chassis and ALL contacts on the drum.
:::::The adjustment of my tuner involved a hammer, it may require a bit of force. Mine works on channel 4 with a vcr but none of the other channels work , i'm perfectly happy with that.
:::::Good luck
:::::
:::::
::::::Ok so I slowly brought TV up on variac....I get no picture and I am picking up radio stations...What gives?
::::::
::::::
::::::
::::::
:::::::Hi all..For the following subject I realize this is a radio forum ..but since most older radio repairmen also worked on TVs I am hoping some of you could give me a few suggestions. A while back I bought for $25.00 a model 30A1 1948 Admiral TV...and recently recapped ALL caps and checked/repaced resistors..tested all tubes..and the main tv tube was replaced with a new (identical) one in the 1960s. I am about to slowly bring up power on my variac...but before I do so I poured over the schematics and noticed there is 9000v on the outside of the main picture tube....EEEEK... and I am aware of the high voltage on various other parts..especially inside the "dog cage". This is the first TV I have restored (restored MANY radios) and I am... to be honest.. some-what scared to power this thing up to test it ....I don't want to just go probing around blindly if i need to make an adjustment...Also once I shut power off I want to discharge caps from top of chassis (if I can) so I do not have to handel a chassis that is "charged up" For those of you who have the experience in working on such I would GREATLY appreciate you helpful hints and suggestions....THANK YOU!!! (If you could..please "dumb it down" for me and not use to much technical terms" )
:::::::
::::::
:::::
::::
:::
::
:
:Ok now I am frustrated...This dam tv is picking up radio signals..but I have absolutely NOTHING on the screen..dark!! I adjusted the iron trap at neck of picture tube, adjusted coils around neck...check all my work, checked all transformers ect ect...and nothing. Picture tube 10bp4 was replace in 1961..could it be bad? At neck I see a glowing filliment...I have a full spectrum tube tester ..can I test it to see if something should show up on screen? ANY IDEAS HERE? Like give up and bring to my local antique radio/tv repair guy? HA HA ...hmmmmm
:
:
::If your not getting anything, dont mess with the tuner yet. Make sure the yoke and ion trap are adjusted properly. The ion trap probably needs to be adjusted. It is on the neck of the picture tube, move it up and down the neck (should be near the end of the gun structure) and rotate it. The magnets may just be forcing the image off the screen. Adjust for maximum brightness and focus. Readjust if a bright dot is visable on the screen after turn off.
::Ian
::
:::Ok I will "play" with tuner...but even if tuner is not working should i get something on my screen because right now I get 100% nothing...dark...The picture tube was replaced in the early 60s with a new one...but I think it might be bad...hmmmm
:::
::::Yes, but the tuner may still be misaligned. I had mine hooked up to a vcr , but because the tuner was misaligned it didnt work.
::::
:::::I have mine hooked up to a digital coverter box ..Shouldn't that work?
:::::
:::::
:::::
::::::Your tuner may be out of adjustment.
::::::I just finshed one of these a few weeks ago, I got sound but no picture except when I slightly pressed down on the tuner knob. There is a screw attached to the detent arm of the drum, loosen it then gently tap the arm back . Also make sure you clean the tuner contacts accessable from the side of the chassis and ALL contacts on the drum.
::::::The adjustment of my tuner involved a hammer, it may require a bit of force. Mine works on channel 4 with a vcr but none of the other channels work , i'm perfectly happy with that.
::::::Good luck
::::::
::::::
:::::::Ok so I slowly brought TV up on variac....I get no picture and I am picking up radio stations...What gives?
:::::::
:::::::
:::::::
:::::::
::::::::Hi all..For the following subject I realize this is a radio forum ..but since most older radio repairmen also worked on TVs I am hoping some of you could give me a few suggestions. A while back I bought for $25.00 a model 30A1 1948 Admiral TV...and recently recapped ALL caps and checked/repaced resistors..tested all tubes..and the main tv tube was replaced with a new (identical) one in the 1960s. I am about to slowly bring up power on my variac...but before I do so I poured over the schematics and noticed there is 9000v on the outside of the main picture tube....EEEEK... and I am aware of the high voltage on various other parts..especially inside the "dog cage". This is the first TV I have restored (restored MANY radios) and I am... to be honest.. some-what scared to power this thing up to test it ....I don't want to just go probing around blindly if i need to make an adjustment...Also once I shut power off I want to discharge caps from top of chassis (if I can) so I do not have to handel a chassis that is "charged up" For those of you who have the experience in working on such I would GREATLY appreciate you helpful hints and suggestions....THANK YOU!!! (If you could..please "dumb it down" for me and not use to much technical terms" )
::::::::
:::::::
::::::
:::::
::::
:::
::
:
George,
My late father was a TV repairman. I can tell you he had replaced many picture tubes. I know that is not much help.
But as far as the radio stations, they are analog as your TV is. We used to have that same problem with the neighbors CB radio when I was young. But a digital converter would eliminate that issue.
Maybe your radio's are missing you and are haunting you through that poor TV. Take a break, find some books at a library and go from there. Sometimes giving yourself time, taking a step back, something will click and you will get it. Been there done that.
I wish you the best, you will get it.
:::::::
::::::
:::::
::::
:::
::
:
Best regards,
Bill Grimm
::::Ok now I am frustrated...This dam tv is picking up radio signals..but I have absolutely NOTHING on the screen..dark!! I adjusted the iron trap at neck of picture tube, adjusted coils around neck...check all my work, checked all transformers ect ect...and nothing. Picture tube 10bp4 was replace in 1961..could it be bad? At neck I see a glowing filliment...I have a full spectrum tube tester ..can I test it to see if something should show up on screen? ANY IDEAS HERE? Like give up and bring to my local antique radio/tv repair guy? HA HA ...hmmmmm
::::
::::
:::::If your not getting anything, dont mess with the tuner yet. Make sure the yoke and ion trap are adjusted properly. The ion trap probably needs to be adjusted. It is on the neck of the picture tube, move it up and down the neck (should be near the end of the gun structure) and rotate it. The magnets may just be forcing the image off the screen. Adjust for maximum brightness and focus. Readjust if a bright dot is visable on the screen after turn off.
:::::Ian
:::::
::::::Ok I will "play" with tuner...but even if tuner is not working should i get something on my screen because right now I get 100% nothing...dark...The picture tube was replaced in the early 60s with a new one...but I think it might be bad...hmmmm
::::::
:::::::Yes, but the tuner may still be misaligned. I had mine hooked up to a vcr , but because the tuner was misaligned it didnt work.
:::::::
::::::::I have mine hooked up to a digital coverter box ..Shouldn't that work?
::::::::
::::::::
::::::::
:::::::::Your tuner may be out of adjustment.
:::::::::I just finshed one of these a few weeks ago, I got sound but no picture except when I slightly pressed down on the tuner knob. There is a screw attached to the detent arm of the drum, loosen it then gently tap the arm back . Also make sure you clean the tuner contacts accessable from the side of the chassis and ALL contacts on the drum.
:::::::::The adjustment of my tuner involved a hammer, it may require a bit of force. Mine works on channel 4 with a vcr but none of the other channels work , i'm perfectly happy with that.
:::::::::Good luck
:::::::::
:::::::::
::::::::::Ok so I slowly brought TV up on variac....I get no picture and I am picking up radio stations...What gives?
::::::::::
::::::::::
::::::::::
::::::::::
:::::::::::Hi all..For the following subject I realize this is a radio forum ..but since most older radio repairmen also worked on TVs I am hoping some of you could give me a few suggestions. A while back I bought for $25.00 a model 30A1 1948 Admiral TV...and recently recapped ALL caps and checked/repaced resistors..tested all tubes..and the main tv tube was replaced with a new (identical) one in the 1960s. I am about to slowly bring up power on my variac...but before I do so I poured over the schematics and noticed there is 9000v on the outside of the main picture tube....EEEEK... and I am aware of the high voltage on various other parts..especially inside the "dog cage". This is the first TV I have restored (restored MANY radios) and I am... to be honest.. some-what scared to power this thing up to test it ....I don't want to just go probing around blindly if i need to make an adjustment...Also once I shut power off I want to discharge caps from top of chassis (if I can) so I do not have to handel a chassis that is "charged up" For those of you who have the experience in working on such I would GREATLY appreciate you helpful hints and suggestions....THANK YOU!!! (If you could..please "dumb it down" for me and not use to much technical terms" )
:::::::::::
:::
:::George,
:::My late father was a TV repairman. I can tell you he had replaced many picture tubes. I know that is not much help.
:::But as far as the radio stations, they are analog as your TV is. We used to have that same problem with the neighbors CB radio when I was young. But a digital converter would eliminate that issue.
:::Maybe your radio's are missing you and are haunting you through that poor TV. Take a break, find some books at a library and go from there. Sometimes giving yourself time, taking a step back, something will click and you will get it. Been there done that.
:::I wish you the best, you will get it.
::::::::::
:::::::::
::::::::
:::::::
::::::
:::::
::::
:::
::George,
::Make sure that the horizontal oscillator is running, it provides the high voltage for the picture tube through the flyback transformer. An easy test is to hold a neon bulb next to the plate lead, usually the cap on the horizontal output tube, the lamp should light from the radiated field. Do Not touch or directly connect to the plate of the tube as it has high voltage pulses on it. All you have to do is take a piece of wooden dowel, drill a hole in it and stick a NE2 lamp in it. No connection to the leads, to make one if you don't have one.
::
:If I could chime in here, what Bob Z said is good for checking for the presense of "High tension" voltage but it does not let you know if you have the correct amount of HV present to drive the picture tube. George, I would recomend (if you continue to repair old tv's) that you purchase from Ebay or some other electronics site (surplus) a Pomona Electronics HV tester. The tester goes upto 30KV which is more than enough measurement to test for a picture tube's actual HV. This would help you to determine if the fly-back is operating properly. I mention because say (for example)your fly-back is producing 9kv and you pic tube needs 27kv the neon bulb test will mislead you as 9kv can excite the neon gas as much as 27kv. That's what an old tv repair man taught me back in the 80's. It shouldn't cost more than $25 dollars.
::
:
Neon bulb test was only suggested to see if Hor. Osc. was working at all. Right now all he knows is that there is no raster, could be many things, this will at least prove some Hoz. activity. If no hoz. osc. then checking the HV is a moot point, I also assumed he did not have anything to measure the HV itself. Also I figured he would have a NE2 lamp or an ac line tester with one in it. It's not the untimate test, but someplace to start.
:::::Ok now I am frustrated...This dam tv is picking up radio signals..but I have absolutely NOTHING on the screen..dark!! I adjusted the iron trap at neck of picture tube, adjusted coils around neck...check all my work, checked all transformers ect ect...and nothing. Picture tube 10bp4 was replace in 1961..could it be bad? At neck I see a glowing filliment...I have a full spectrum tube tester ..can I test it to see if something should show up on screen? ANY IDEAS HERE? Like give up and bring to my local antique radio/tv repair guy? HA HA ...hmmmmm
:::::
:::::
::::::If your not getting anything, dont mess with the tuner yet. Make sure the yoke and ion trap are adjusted properly. The ion trap probably needs to be adjusted. It is on the neck of the picture tube, move it up and down the neck (should be near the end of the gun structure) and rotate it. The magnets may just be forcing the image off the screen. Adjust for maximum brightness and focus. Readjust if a bright dot is visable on the screen after turn off.
::::::Ian
::::::
:::::::Ok I will "play" with tuner...but even if tuner is not working should i get something on my screen because right now I get 100% nothing...dark...The picture tube was replaced in the early 60s with a new one...but I think it might be bad...hmmmm
:::::::
::::::::Yes, but the tuner may still be misaligned. I had mine hooked up to a vcr , but because the tuner was misaligned it didnt work.
::::::::
:::::::::I have mine hooked up to a digital coverter box ..Shouldn't that work?
:::::::::
:::::::::
:::::::::
::::::::::Your tuner may be out of adjustment.
::::::::::I just finshed one of these a few weeks ago, I got sound but no picture except when I slightly pressed down on the tuner knob. There is a screw attached to the detent arm of the drum, loosen it then gently tap the arm back . Also make sure you clean the tuner contacts accessable from the side of the chassis and ALL contacts on the drum.
::::::::::The adjustment of my tuner involved a hammer, it may require a bit of force. Mine works on channel 4 with a vcr but none of the other channels work , i'm perfectly happy with that.
::::::::::Good luck
::::::::::
::::::::::
:::::::::::Ok so I slowly brought TV up on variac....I get no picture and I am picking up radio stations...What gives?
:::::::::::
:::::::::::
:::::::::::
:::::::::::
::::::::::::Hi all..For the following subject I realize this is a radio forum ..but since most older radio repairmen also worked on TVs I am hoping some of you could give me a few suggestions. A while back I bought for $25.00 a model 30A1 1948 Admiral TV...and recently recapped ALL caps and checked/repaced resistors..tested all tubes..and the main tv tube was replaced with a new (identical) one in the 1960s. I am about to slowly bring up power on my variac...but before I do so I poured over the schematics and noticed there is 9000v on the outside of the main picture tube....EEEEK... and I am aware of the high voltage on various other parts..especially inside the "dog cage". This is the first TV I have restored (restored MANY radios) and I am... to be honest.. some-what scared to power this thing up to test it ....I don't want to just go probing around blindly if i need to make an adjustment...Also once I shut power off I want to discharge caps from top of chassis (if I can) so I do not have to handel a chassis that is "charged up" For those of you who have the experience in working on such I would GREATLY appreciate you helpful hints and suggestions....THANK YOU!!! (If you could..please "dumb it down" for me and not use to much technical terms" )
::::::::::::
::::
::::George,
::::My late father was a TV repairman. I can tell you he had replaced many picture tubes. I know that is not much help.
::::But as far as the radio stations, they are analog as your TV is. We used to have that same problem with the neighbors CB radio when I was young. But a digital converter would eliminate that issue.
::::Maybe your radio's are missing you and are haunting you through that poor TV. Take a break, find some books at a library and go from there. Sometimes giving yourself time, taking a step back, something will click and you will get it. Been there done that.
::::I wish you the best, you will get it.
:::::::::::
::::::::::
:::::::::
::::::::
:::::::
::::::
:::::
::::
:::George,
:::Make sure that the horizontal oscillator is running, it provides the high voltage for the picture tube through the flyback transformer. An easy test is to hold a neon bulb next to the plate lead, usually the cap on the horizontal output tube, the lamp should light from the radiated field. Do Not touch or directly connect to the plate of the tube as it has high voltage pulses on it. All you have to do is take a piece of wooden dowel, drill a hole in it and stick a NE2 lamp in it. No connection to the leads, to make one if you don't have one.
:::
::If I could chime in here, what Bob Z said is good for checking for the presense of "High tension" voltage but it does not let you know if you have the correct amount of HV present to drive the picture tube. George, I would recomend (if you continue to repair old tv's) that you purchase from Ebay or some other electronics site (surplus) a Pomona Electronics HV tester. The tester goes upto 30KV which is more than enough measurement to test for a picture tube's actual HV. This would help you to determine if the fly-back is operating properly. I mention because say (for example)your fly-back is producing 9kv and you pic tube needs 27kv the neon bulb test will mislead you as 9kv can excite the neon gas as much as 27kv. That's what an old tv repair man taught me back in the 80's. It shouldn't cost more than $25 dollars.
:::
::
:
:Neon bulb test was only suggested to see if Hor. Osc. was working at all. Right now all he knows is that there is no raster, could be many things, this will at least prove some Hoz. activity. If no hoz. osc. then checking the HV is a moot point, I also assumed he did not have anything to measure the HV itself. Also I figured he would have a NE2 lamp or an ac line tester with one in it. It's not the untimate test, but someplace to start.
:
:
:
:::::Ok now I am frustrated...This dam tv is picking up radio signals..but I have absolutely NOTHING on the screen..dark!! I adjusted the iron trap at neck of picture tube, adjusted coils around neck...check all my work, checked all transformers ect ect...and nothing. Picture tube 10bp4 was replace in 1961..could it be bad? At neck I see a glowing filliment...I have a full spectrum tube tester ..can I test it to see if something should show up on screen? ANY IDEAS HERE? Like give up and bring to my local antique radio/tv repair guy? HA HA ...hmmmmm
:::::
:::::
::::::If your not getting anything, dont mess with the tuner yet. Make sure the yoke and ion trap are adjusted properly. The ion trap probably needs to be adjusted. It is on the neck of the picture tube, move it up and down the neck (should be near the end of the gun structure) and rotate it. The magnets may just be forcing the image off the screen. Adjust for maximum brightness and focus. Readjust if a bright dot is visable on the screen after turn off.
::::::Ian
::::::
:::::::Ok I will "play" with tuner...but even if tuner is not working should i get something on my screen because right now I get 100% nothing...dark...The picture tube was replaced in the early 60s with a new one...but I think it might be bad...hmmmm
:::::::
::::::::Yes, but the tuner may still be misaligned. I had mine hooked up to a vcr , but because the tuner was misaligned it didnt work.
::::::::
:::::::::I have mine hooked up to a digital coverter box ..Shouldn't that work?
:::::::::
:::::::::
:::::::::
::::::::::Your tuner may be out of adjustment.
::::::::::I just finshed one of these a few weeks ago, I got sound but no picture except when I slightly pressed down on the tuner knob. There is a screw attached to the detent arm of the drum, loosen it then gently tap the arm back . Also make sure you clean the tuner contacts accessable from the side of the chassis and ALL contacts on the drum.
::::::::::The adjustment of my tuner involved a hammer, it may require a bit of force. Mine works on channel 4 with a vcr but none of the other channels work , i'm perfectly happy with that.
::::::::::Good luck
::::::::::
::::::::::
:::::::::::Ok so I slowly brought TV up on variac....I get no picture and I am picking up radio stations...What gives?
:::::::::::
:::::::::::
:::::::::::
:::::::::::
::::::::::::Hi all..For the following subject I realize this is a radio forum ..but since most older radio repairmen also worked on TVs I am hoping some of you could give me a few suggestions. A while back I bought for $25.00 a model 30A1 1948 Admiral TV...and recently recapped ALL caps and checked/repaced resistors..tested all tubes..and the main tv tube was replaced with a new (identical) one in the 1960s. I am about to slowly bring up power on my variac...but before I do so I poured over the schematics and noticed there is 9000v on the outside of the main picture tube....EEEEK... and I am aware of the high voltage on various other parts..especially inside the "dog cage". This is the first TV I have restored (restored MANY radios) and I am... to be honest.. some-what scared to power this thing up to test it ....I don't want to just go probing around blindly if i need to make an adjustment...Also once I shut power off I want to discharge caps from top of chassis (if I can) so I do not have to handel a chassis that is "charged up" For those of you who have the experience in working on such I would GREATLY appreciate you helpful hints and suggestions....THANK YOU!!! (If you could..please "dumb it down" for me and not use to much technical terms" )
::::::::::::
::::
::::George,
::::My late father was a TV repairman. I can tell you he had replaced many picture tubes. I know that is not much help.
::::But as far as the radio stations, they are analog as your TV is. We used to have that same problem with the neighbors CB radio when I was young. But a digital converter would eliminate that issue.
::::Maybe your radio's are missing you and are haunting you through that poor TV. Take a break, find some books at a library and go from there. Sometimes giving yourself time, taking a step back, something will click and you will get it. Been there done that.
::::I wish you the best, you will get it.
:::::::::::
::::::::::
:::::::::
::::::::
:::::::
::::::
:::::
::::
:::George,
:::Make sure that the horizontal oscillator is running, it provides the high voltage for the picture tube through the flyback transformer. An easy test is to hold a neon bulb next to the plate lead, usually the cap on the horizontal output tube, the lamp should light from the radiated field. Do Not touch or directly connect to the plate of the tube as it has high voltage pulses on it. All you have to do is take a piece of wooden dowel, drill a hole in it and stick a NE2 lamp in it. No connection to the leads, to make one if you don't have one.
:::
::If I could chime in here, what Bob Z said is good for checking for the presense of "High tension" voltage but it does not let you know if you have the correct amount of HV present to drive the picture tube. George, I would recomend (if you continue to repair old tv's) that you purchase from Ebay or some other electronics site (surplus) a Pomona Electronics HV tester. The tester goes upto 30KV which is more than enough measurement to test for a picture tube's actual HV. This would help you to determine if the fly-back is operating properly. I mention because say (for example)your fly-back is producing 9kv and you pic tube needs 27kv the neon bulb test will mislead you as 9kv can excite the neon gas as much as 27kv. That's what an old tv repair man taught me back in the 80's. It shouldn't cost more than $25 dollars.
:::
::
:
:Neon bulb test was only suggested to see if Hor. Osc. was working at all. Right now all he knows is that there is no raster, could be many things, this will at least prove some Hoz. activity. If no hoz. osc. then checking the HV is a moot point, I also assumed he did not have anything to measure the HV itself. Also I figured he would have a NE2 lamp or an ac line tester with one in it. It's not the untimate test, but someplace to start.
:
:
:
::Ok I put a neon bulb on the end of awooden stick and probed around the fyback transformer...bulb lit..I tested all tubes in the cage the 6bg6 test between weak /good...I am going to replace this tube..but i think this many not be the fix...Again I get nothing on the screen...completely dark...I adjusted the trap on the tube neck and played with the various bright/dark ...still nothing....Also I am going to go back and check all resistors...I do get the high pitch sound from the "cage" ....What should i check next? Could it be the two coils around the neck of the tube?
::
::
:::::::Ok now I am frustrated...This dam tv is picking up radio signals..but I have absolutely NOTHING on the screen..dark!! I adjusted the iron trap at neck of picture tube, adjusted coils around neck...check all my work, checked all transformers ect ect...and nothing. Picture tube 10bp4 was replace in 1961..could it be bad? At neck I see a glowing filliment...I have a full spectrum tube tester ..can I test it to see if something should show up on screen? ANY IDEAS HERE? Like give up and bring to my local antique radio/tv repair guy? HA HA ...hmmmmm
:::::::
:::::::
::::::::If your not getting anything, dont mess with the tuner yet. Make sure the yoke and ion trap are adjusted properly. The ion trap probably needs to be adjusted. It is on the neck of the picture tube, move it up and down the neck (should be near the end of the gun structure) and rotate it. The magnets may just be forcing the image off the screen. Adjust for maximum brightness and focus. Readjust if a bright dot is visable on the screen after turn off.
::::::::Ian
::::::::
:::::::::Ok I will "play" with tuner...but even if tuner is not working should i get something on my screen because right now I get 100% nothing...dark...The picture tube was replaced in the early 60s with a new one...but I think it might be bad...hmmmm
:::::::::
::::::::::Yes, but the tuner may still be misaligned. I had mine hooked up to a vcr , but because the tuner was misaligned it didnt work.
::::::::::
:::::::::::I have mine hooked up to a digital coverter box ..Shouldn't that work?
:::::::::::
:::::::::::
:::::::::::
::::::::::::Your tuner may be out of adjustment.
::::::::::::I just finshed one of these a few weeks ago, I got sound but no picture except when I slightly pressed down on the tuner knob. There is a screw attached to the detent arm of the drum, loosen it then gently tap the arm back . Also make sure you clean the tuner contacts accessable from the side of the chassis and ALL contacts on the drum.
::::::::::::The adjustment of my tuner involved a hammer, it may require a bit of force. Mine works on channel 4 with a vcr but none of the other channels work , i'm perfectly happy with that.
::::::::::::Good luck
::::::::::::
::::::::::::
:::::::::::::Ok so I slowly brought TV up on variac....I get no picture and I am picking up radio stations...What gives?
:::::::::::::
:::::::::::::
:::::::::::::
:::::::::::::
::::::::::::::Hi all..For the following subject I realize this is a radio forum ..but since most older radio repairmen also worked on TVs I am hoping some of you could give me a few suggestions. A while back I bought for $25.00 a model 30A1 1948 Admiral TV...and recently recapped ALL caps and checked/repaced resistors..tested all tubes..and the main tv tube was replaced with a new (identical) one in the 1960s. I am about to slowly bring up power on my variac...but before I do so I poured over the schematics and noticed there is 9000v on the outside of the main picture tube....EEEEK... and I am aware of the high voltage on various other parts..especially inside the "dog cage". This is the first TV I have restored (restored MANY radios) and I am... to be honest.. some-what scared to power this thing up to test it ....I don't want to just go probing around blindly if i need to make an adjustment...Also once I shut power off I want to discharge caps from top of chassis (if I can) so I do not have to handel a chassis that is "charged up" For those of you who have the experience in working on such I would GREATLY appreciate you helpful hints and suggestions....THANK YOU!!! (If you could..please "dumb it down" for me and not use to much technical terms" )
::::::::::::::
::::::
::::::George,
::::::My late father was a TV repairman. I can tell you he had replaced many picture tubes. I know that is not much help.
::::::But as far as the radio stations, they are analog as your TV is. We used to have that same problem with the neighbors CB radio when I was young. But a digital converter would eliminate that issue.
::::::Maybe your radio's are missing you and are haunting you through that poor TV. Take a break, find some books at a library and go from there. Sometimes giving yourself time, taking a step back, something will click and you will get it. Been there done that.
::::::I wish you the best, you will get it.
:::::::::::::
::::::::::::
:::::::::::
::::::::::
:::::::::
::::::::
:::::::
::::::
:::::George,
:::::Make sure that the horizontal oscillator is running, it provides the high voltage for the picture tube through the flyback transformer. An easy test is to hold a neon bulb next to the plate lead, usually the cap on the horizontal output tube, the lamp should light from the radiated field. Do Not touch or directly connect to the plate of the tube as it has high voltage pulses on it. All you have to do is take a piece of wooden dowel, drill a hole in it and stick a NE2 lamp in it. No connection to the leads, to make one if you don't have one.
:::::
::::If I could chime in here, what Bob Z said is good for checking for the presense of "High tension" voltage but it does not let you know if you have the correct amount of HV present to drive the picture tube. George, I would recomend (if you continue to repair old tv's) that you purchase from Ebay or some other electronics site (surplus) a Pomona Electronics HV tester. The tester goes upto 30KV which is more than enough measurement to test for a picture tube's actual HV. This would help you to determine if the fly-back is operating properly. I mention because say (for example)your fly-back is producing 9kv and you pic tube needs 27kv the neon bulb test will mislead you as 9kv can excite the neon gas as much as 27kv. That's what an old tv repair man taught me back in the 80's. It shouldn't cost more than $25 dollars.
:::::
::::
:::
:::Neon bulb test was only suggested to see if Hor. Osc. was working at all. Right now all he knows is that there is no raster, could be many things, this will at least prove some Hoz. activity. If no hoz. osc. then checking the HV is a moot point, I also assumed he did not have anything to measure the HV itself. Also I figured he would have a NE2 lamp or an ac line tester with one in it. It's not the untimate test, but someplace to start.
:::
:::
:::
::
:
:Have you adjusted the horizontal lock Inductor that is on the back of the chassis ? Turn it through its entire motion to see if it changes anything.
:
:::Ok I put a neon bulb on the end of awooden stick and probed around the fyback transformer...bulb lit..I tested all tubes in the cage the 6bg6 test between weak /good...I am going to replace this tube..but i think this many not be the fix...Again I get nothing on the screen...completely dark...I adjusted the trap on the tube neck and played with the various bright/dark ...still nothing....Also I am going to go back and check all resistors...I do get the high pitch sound from the "cage" ....What should i check next? Could it be the two coils around the neck of the tube?
:::
:::
::::::::Ok now I am frustrated...This dam tv is picking up radio signals..but I have absolutely NOTHING on the screen..dark!! I adjusted the iron trap at neck of picture tube, adjusted coils around neck...check all my work, checked all transformers ect ect...and nothing. Picture tube 10bp4 was replace in 1961..could it be bad? At neck I see a glowing filliment...I have a full spectrum tube tester ..can I test it to see if something should show up on screen? ANY IDEAS HERE? Like give up and bring to my local antique radio/tv repair guy? HA HA ...hmmmmm
::::::::
::::::::
:::::::::If your not getting anything, dont mess with the tuner yet. Make sure the yoke and ion trap are adjusted properly. The ion trap probably needs to be adjusted. It is on the neck of the picture tube, move it up and down the neck (should be near the end of the gun structure) and rotate it. The magnets may just be forcing the image off the screen. Adjust for maximum brightness and focus. Readjust if a bright dot is visable on the screen after turn off.
:::::::::Ian
:::::::::
::::::::::Ok I will "play" with tuner...but even if tuner is not working should i get something on my screen because right now I get 100% nothing...dark...The picture tube was replaced in the early 60s with a new one...but I think it might be bad...hmmmm
::::::::::
:::::::::::Yes, but the tuner may still be misaligned. I had mine hooked up to a vcr , but because the tuner was misaligned it didnt work.
:::::::::::
::::::::::::I have mine hooked up to a digital coverter box ..Shouldn't that work?
::::::::::::
::::::::::::
::::::::::::
:::::::::::::Your tuner may be out of adjustment.
:::::::::::::I just finshed one of these a few weeks ago, I got sound but no picture except when I slightly pressed down on the tuner knob. There is a screw attached to the detent arm of the drum, loosen it then gently tap the arm back . Also make sure you clean the tuner contacts accessable from the side of the chassis and ALL contacts on the drum.
:::::::::::::The adjustment of my tuner involved a hammer, it may require a bit of force. Mine works on channel 4 with a vcr but none of the other channels work , i'm perfectly happy with that.
:::::::::::::Good luck
:::::::::::::
:::::::::::::
::::::::::::::Ok so I slowly brought TV up on variac....I get no picture and I am picking up radio stations...What gives?
::::::::::::::
::::::::::::::
::::::::::::::
::::::::::::::
:::::::::::::::Hi all..For the following subject I realize this is a radio forum ..but since most older radio repairmen also worked on TVs I am hoping some of you could give me a few suggestions. A while back I bought for $25.00 a model 30A1 1948 Admiral TV...and recently recapped ALL caps and checked/repaced resistors..tested all tubes..and the main tv tube was replaced with a new (identical) one in the 1960s. I am about to slowly bring up power on my variac...but before I do so I poured over the schematics and noticed there is 9000v on the outside of the main picture tube....EEEEK... and I am aware of the high voltage on various other parts..especially inside the "dog cage". This is the first TV I have restored (restored MANY radios) and I am... to be honest.. some-what scared to power this thing up to test it ....I don't want to just go probing around blindly if i need to make an adjustment...Also once I shut power off I want to discharge caps from top of chassis (if I can) so I do not have to handel a chassis that is "charged up" For those of you who have the experience in working on such I would GREATLY appreciate you helpful hints and suggestions....THANK YOU!!! (If you could..please "dumb it down" for me and not use to much technical terms" )
:::::::::::::::
:::::::
:::::::George,
:::::::My late father was a TV repairman. I can tell you he had replaced many picture tubes. I know that is not much help.
:::::::But as far as the radio stations, they are analog as your TV is. We used to have that same problem with the neighbors CB radio when I was young. But a digital converter would eliminate that issue.
:::::::Maybe your radio's are missing you and are haunting you through that poor TV. Take a break, find some books at a library and go from there. Sometimes giving yourself time, taking a step back, something will click and you will get it. Been there done that.
:::::::I wish you the best, you will get it.
::::::::::::::
:::::::::::::
::::::::::::
:::::::::::
::::::::::
:::::::::
::::::::
:::::::
::::::George,
::::::Make sure that the horizontal oscillator is running, it provides the high voltage for the picture tube through the flyback transformer. An easy test is to hold a neon bulb next to the plate lead, usually the cap on the horizontal output tube, the lamp should light from the radiated field. Do Not touch or directly connect to the plate of the tube as it has high voltage pulses on it. All you have to do is take a piece of wooden dowel, drill a hole in it and stick a NE2 lamp in it. No connection to the leads, to make one if you don't have one.
::::::
:::::If I could chime in here, what Bob Z said is good for checking for the presense of "High tension" voltage but it does not let you know if you have the correct amount of HV present to drive the picture tube. George, I would recomend (if you continue to repair old tv's) that you purchase from Ebay or some other electronics site (surplus) a Pomona Electronics HV tester. The tester goes upto 30KV which is more than enough measurement to test for a picture tube's actual HV. This would help you to determine if the fly-back is operating properly. I mention because say (for example)your fly-back is producing 9kv and you pic tube needs 27kv the neon bulb test will mislead you as 9kv can excite the neon gas as much as 27kv. That's what an old tv repair man taught me back in the 80's. It shouldn't cost more than $25 dollars.
::::::
:::::
::::
::::Neon bulb test was only suggested to see if Hor. Osc. was working at all. Right now all he knows is that there is no raster, could be many things, this will at least prove some Hoz. activity. If no hoz. osc. then checking the HV is a moot point, I also assumed he did not have anything to measure the HV itself. Also I figured he would have a NE2 lamp or an ac line tester with one in it. It's not the untimate test, but someplace to start.
::::
::::
::::
:::
::
:
...And, as Warren suggested, grid and cathode voltages are very important. If the cathode circuit is open, or bias relationship is incorrect, you won't get a raster. Bias controls the intensity of the electron beam, just as in an ordinary radio tube. Be sure that there is adequate voltage at the 1st anode, too.
Don't mess with any oscillator or RF adjustments at this point. All that is necessary for a raster is high voltage and that the horizontal oscillator function, which it will on its own, in most adjustment positions. Adjusting further will only throw off factory settings and make getting a stable and linear picture more difficult later.
If you have gone over all else, you might also consider bringing a wire from the chassis near the 2nd anode connector to check for an arc. If, for some reason, a high voltage filter cap (such as a doorknob cap) has shorted, you might get a glow from your neon lamp tester at the flyback, but not get voltage at the CRT. The high voltage is sent through a high value resistor (usually 1 meg), so if you arc the high voltage to the chassis or accidently short it completely, you won't damage the flyback.
It is a good idea, if the high voltage rectifier and its related components are dirty, to clean them. This prevents random arcing. It also gives you an opportunity to check the 1 meg resistor, though this probably isn't your problem. Even if it were to open up completely, it'd likely arc over and still give you a raster.
T.