The only thing I am not sure about is the speaker. The small transformer is 367 ohms on the primary (good) and .7-.9 ohms on the secondary, it should be 11 ohms, (I unsoldered it from the speaker cone so it was solo) and the speaker cone coil is 1.8 ohms and should be 1 ohm.
All plate voltages are high (440v DC) as is the rectifier pins and the electrolytics as well are the same voltage.
I am not sure where to go from here. Thanks ahead for your advice. I may order new 36's this week and try with them in. I dont have a tester.
Touch top of the 35, 2nd detector. You should hear hum if audio section of the radio is ok.
Check continuity of the oscillator coil. Phico oscillator coils are sometimes often. You might be able to see a green spot on the coil?
Norm
:I have checked all coils and rewound an open one (the small cathode coil 6 ohms). The rectifier is good and the 42 is good. I replaced them with good ones that I had in another radio. I dont have extra 36's so I am using the ones that came with the radio. All filaments are good (not open). The radio is recapped properly.
:
:The only thing I am not sure about is the speaker. The small transformer is 367 ohms on the primary (good) and .7-.9 ohms on the secondary, it should be 11 ohms, (I unsoldered it from the speaker cone so it was solo) and the speaker cone coil is 1.8 ohms and should be 1 ohm.
:
:All plate voltages are high (440v DC) as is the rectifier pins and the electrolytics as well are the same voltage.
:
:I am not sure where to go from here. Thanks ahead for your advice. I may order new 36's this week and try with them in. I dont have a tester.
:
I tried to inject a signal into the grid and touched it as well. It is totally silent. The small coil that feeds the cathode, 1 Detector was open. I took it out and rewound it. I did this once before on a Mod 60, so I was familiar with how to do it. It was still totally dead after that.
All the tubes are very high plate v. I suspect none are conducting. I am not sure what would cause that. Even an open coil should let you put a signal through, wouldn't it? I neeed to look at the IF transformer (the one with the 4M resistor in it) again, but I do think it is not open anywhere based on my tests so far.
Thanks for helping.
:Steve
:
: Touch top of the 35, 2nd detector. You should hear hum if audio section of the radio is ok.
:
: Check continuity of the oscillator coil. Phico oscillator coils are sometimes often. You might be able to see a green spot on the coil?
:
:Norm
:
::I have checked all coils and rewound an open one (the small cathode coil 6 ohms). The rectifier is good and the 42 is good. I replaced them with good ones that I had in another radio. I dont have extra 36's so I am using the ones that came with the radio. All filaments are good (not open). The radio is recapped properly.
::
::The only thing I am not sure about is the speaker. The small transformer is 367 ohms on the primary (good) and .7-.9 ohms on the secondary, it should be 11 ohms, (I unsoldered it from the speaker cone so it was solo) and the speaker cone coil is 1.8 ohms and should be 1 ohm.
::
::All plate voltages are high (440v DC) as is the rectifier pins and the electrolytics as well are the same voltage.
::
::I am not sure where to go from here. Thanks ahead for your advice. I may order new 36's this week and try with them in. I dont have a tester.
::
:
The output tube draws most current and should load down voltage.
Be sure the 42 is good. You mentioned it was good before but this is the only tube which can load down voltage very much. Maybe voltage is missing at one of the pins? If it has voltage on pin #2 and #3 with slightly negative (-15 volts)on pin #4, pin #5 grounded it should be loading down voltage.
Noticed I typed 35 rather than 36 in previous post. Glad you understood anyway.. With proper voltages on the 42 do you hear hum touching top of the 36?
Norm
:Hi Norm,
:
:I tried to inject a signal into the grid and touched it as well. It is totally silent. The small coil that feeds the cathode, 1 Detector was open. I took it out and rewound it. I did this once before on a Mod 60, so I was familiar with how to do it. It was still totally dead after that.
:
:All the tubes are very high plate v. I suspect none are conducting. I am not sure what would cause that. Even an open coil should let you put a signal through, wouldn't it? I neeed to look at the IF transformer (the one with the 4M resistor in it) again, but I do think it is not open anywhere based on my tests so far.
:
:Thanks for helping.
:
::Steve
::
:: Touch top of the 35, 2nd detector. You should hear hum if audio section of the radio is ok.
::
:: Check continuity of the oscillator coil. Phico oscillator coils are sometimes often. You might be able to see a green spot on the coil?
::
::Norm
::
:::I have checked all coils and rewound an open one (the small cathode coil 6 ohms). The rectifier is good and the 42 is good. I replaced them with good ones that I had in another radio. I dont have extra 36's so I am using the ones that came with the radio. All filaments are good (not open). The radio is recapped properly.
:::
:::The only thing I am not sure about is the speaker. The small transformer is 367 ohms on the primary (good) and .7-.9 ohms on the secondary, it should be 11 ohms, (I unsoldered it from the speaker cone so it was solo) and the speaker cone coil is 1.8 ohms and should be 1 ohm.
:::
:::All plate voltages are high (440v DC) as is the rectifier pins and the electrolytics as well are the same voltage.
:::
:::I am not sure where to go from here. Thanks ahead for your advice. I may order new 36's this week and try with them in. I dont have a tester.
:::
::
:
I switched out the 80 rectifier and the 42 with ones from a 118B I use every day. The 118B plays with the tubes I had in the Jr and now the Jr has the tubes that were working in the 118B, so I am sure they are good. I can't test the 36's, I don't have any others, I may order two as I want replacements/spares anyway.
That said, the 42, and 36's all have 445 v at the plate when I check them against the negative of the electrolytic (is that B minus?). To chassis ground I dont get aything. There is a very slight hum at the speaker, very slight.
No sound/response at all when I touch either 36 grid. It seems dead. I checked the cap blocks and the caps are correctly wired. My schematic is not accurate for my Run 11, I have 4 bakelite blocks, not 5, so there are portions I am not sure as to connections. All looks good though.
All coils are solid. I did reverse the little one that I re-wound in case I made a mistake, but no change. I also jumped over the volume control direct to the antenna coil and no change.
The 4 M resistor is 5.5M. That's almost an open? I may change that next week when I get to work on this again. I may try a 2M (Philco site suggestion). Would that make a difference? I dont think so, but I am not sure what to check next.
I'll check the solder joints again, just in case.
Steve
:Hi Steve
:
: The output tube draws most current and should load down voltage.
:
: Be sure the 42 is good. You mentioned it was good before but this is the only tube which can load down voltage very much. Maybe voltage is missing at one of the pins? If it has voltage on pin #2 and #3 with slightly negative (-15 volts)on pin #4, pin #5 grounded it should be loading down voltage.
:
: Noticed I typed 35 rather than 36 in previous post. Glad you understood anyway.. With proper voltages on the 42 do you hear hum touching top of the 36?
:
:Norm
:
:
:
::Hi Norm,
::
::I tried to inject a signal into the grid and touched it as well. It is totally silent. The small coil that feeds the cathode, 1 Detector was open. I took it out and rewound it. I did this once before on a Mod 60, so I was familiar with how to do it. It was still totally dead after that.
::
::All the tubes are very high plate v. I suspect none are conducting. I am not sure what would cause that. Even an open coil should let you put a signal through, wouldn't it? I neeed to look at the IF transformer (the one with the 4M resistor in it) again, but I do think it is not open anywhere based on my tests so far.
::
::Thanks for helping.
::
:::Steve
:::
::: Touch top of the 35, 2nd detector. You should hear hum if audio section of the radio is ok.
:::
::: Check continuity of the oscillator coil. Phico oscillator coils are sometimes often. You might be able to see a green spot on the coil?
:::
:::Norm
:::
::::I have checked all coils and rewound an open one (the small cathode coil 6 ohms). The rectifier is good and the 42 is good. I replaced them with good ones that I had in another radio. I dont have extra 36's so I am using the ones that came with the radio. All filaments are good (not open). The radio is recapped properly.
::::
::::The only thing I am not sure about is the speaker. The small transformer is 367 ohms on the primary (good) and .7-.9 ohms on the secondary, it should be 11 ohms, (I unsoldered it from the speaker cone so it was solo) and the speaker cone coil is 1.8 ohms and should be 1 ohm.
::::
::::All plate voltages are high (440v DC) as is the rectifier pins and the electrolytics as well are the same voltage.
::::
::::I am not sure where to go from here. Thanks ahead for your advice. I may order new 36's this week and try with them in. I dont have a tester.
::::
:::
::
:
You found the problem. Resistor #36 (325 ohms) between B- and chassis open. You can use a 2 watt 330 ohm resistor is you don't have a wire wound.
Norm
:Hi Norm,
:
:I switched out the 80 rectifier and the 42 with ones from a 118B I use every day. The 118B plays with the tubes I had in the Jr and now the Jr has the tubes that were working in the 118B, so I am sure they are good. I can't test the 36's, I don't have any others, I may order two as I want replacements/spares anyway.
:
:That said, the 42, and 36's all have 445 v at the plate when I check them against the negative of the electrolytic (is that B minus?). To chassis ground I dont get aything. There is a very slight hum at the speaker, very slight.
:
:No sound/response at all when I touch either 36 grid. It seems dead. I checked the cap blocks and the caps are correctly wired. My schematic is not accurate for my Run 11, I have 4 bakelite blocks, not 5, so there are portions I am not sure as to connections. All looks good though.
:
:All coils are solid. I did reverse the little one that I re-wound in case I made a mistake, but no change. I also jumped over the volume control direct to the antenna coil and no change.
:
:The 4 M resistor is 5.5M. That's almost an open? I may change that next week when I get to work on this again. I may try a 2M (Philco site suggestion). Would that make a difference? I dont think so, but I am not sure what to check next.
:
:I'll check the solder joints again, just in case.
:
:Steve
:
:
:
:
::Hi Steve
::
:: The output tube draws most current and should load down voltage.
::
:: Be sure the 42 is good. You mentioned it was good before but this is the only tube which can load down voltage very much. Maybe voltage is missing at one of the pins? If it has voltage on pin #2 and #3 with slightly negative (-15 volts)on pin #4, pin #5 grounded it should be loading down voltage.
::
:: Noticed I typed 35 rather than 36 in previous post. Glad you understood anyway.. With proper voltages on the 42 do you hear hum touching top of the 36?
::
::Norm
::
::
::
:::Hi Norm,
:::
:::I tried to inject a signal into the grid and touched it as well. It is totally silent. The small coil that feeds the cathode, 1 Detector was open. I took it out and rewound it. I did this once before on a Mod 60, so I was familiar with how to do it. It was still totally dead after that.
:::
:::All the tubes are very high plate v. I suspect none are conducting. I am not sure what would cause that. Even an open coil should let you put a signal through, wouldn't it? I neeed to look at the IF transformer (the one with the 4M resistor in it) again, but I do think it is not open anywhere based on my tests so far.
:::
:::Thanks for helping.
:::
::::Steve
::::
:::: Touch top of the 35, 2nd detector. You should hear hum if audio section of the radio is ok.
::::
:::: Check continuity of the oscillator coil. Phico oscillator coils are sometimes often. You might be able to see a green spot on the coil?
::::
::::Norm
::::
:::::I have checked all coils and rewound an open one (the small cathode coil 6 ohms). The rectifier is good and the 42 is good. I replaced them with good ones that I had in another radio. I dont have extra 36's so I am using the ones that came with the radio. All filaments are good (not open). The radio is recapped properly.
:::::
:::::The only thing I am not sure about is the speaker. The small transformer is 367 ohms on the primary (good) and .7-.9 ohms on the secondary, it should be 11 ohms, (I unsoldered it from the speaker cone so it was solo) and the speaker cone coil is 1.8 ohms and should be 1 ohm.
:::::
:::::All plate voltages are high (440v DC) as is the rectifier pins and the electrolytics as well are the same voltage.
:::::
:::::I am not sure where to go from here. Thanks ahead for your advice. I may order new 36's this week and try with them in. I dont have a tester.
:::::
::::
:::
::
:
If you have a moment, can you explain why you think it is resistor 36?
I can't test it now as I am traveling until Friday. I brought my schematic so I'd like to see what you mean for my learning benefit.
Thanks for all your help.
Steve
:Hi Steve
:
: You found the problem. Resistor #36 (325 ohms) between B- and chassis open. You can use a 2 watt 330 ohm resistor is you don't have a wire wound.
:
:Norm
:
:
:
:
::Hi Norm,
::
::I switched out the 80 rectifier and the 42 with ones from a 118B I use every day. The 118B plays with the tubes I had in the Jr and now the Jr has the tubes that were working in the 118B, so I am sure they are good. I can't test the 36's, I don't have any others, I may order two as I want replacements/spares anyway.
::
::That said, the 42, and 36's all have 445 v at the plate when I check them against the negative of the electrolytic (is that B minus?). To chassis ground I dont get aything. There is a very slight hum at the speaker, very slight.
::
::No sound/response at all when I touch either 36 grid. It seems dead. I checked the cap blocks and the caps are correctly wired. My schematic is not accurate for my Run 11, I have 4 bakelite blocks, not 5, so there are portions I am not sure as to connections. All looks good though.
::
::All coils are solid. I did reverse the little one that I re-wound in case I made a mistake, but no change. I also jumped over the volume control direct to the antenna coil and no change.
::
::The 4 M resistor is 5.5M. That's almost an open? I may change that next week when I get to work on this again. I may try a 2M (Philco site suggestion). Would that make a difference? I dont think so, but I am not sure what to check next.
::
::I'll check the solder joints again, just in case.
::
::Steve
::
::
::
::
:::Hi Steve
:::
::: The output tube draws most current and should load down voltage.
:::
::: Be sure the 42 is good. You mentioned it was good before but this is the only tube which can load down voltage very much. Maybe voltage is missing at one of the pins? If it has voltage on pin #2 and #3 with slightly negative (-15 volts)on pin #4, pin #5 grounded it should be loading down voltage.
:::
::: Noticed I typed 35 rather than 36 in previous post. Glad you understood anyway.. With proper voltages on the 42 do you hear hum touching top of the 36?
:::
:::Norm
:::
:::
:::
::::Hi Norm,
::::
::::I tried to inject a signal into the grid and touched it as well. It is totally silent. The small coil that feeds the cathode, 1 Detector was open. I took it out and rewound it. I did this once before on a Mod 60, so I was familiar with how to do it. It was still totally dead after that.
::::
::::All the tubes are very high plate v. I suspect none are conducting. I am not sure what would cause that. Even an open coil should let you put a signal through, wouldn't it? I neeed to look at the IF transformer (the one with the 4M resistor in it) again, but I do think it is not open anywhere based on my tests so far.
::::
::::Thanks for helping.
::::
:::::Steve
:::::
::::: Touch top of the 35, 2nd detector. You should hear hum if audio section of the radio is ok.
:::::
::::: Check continuity of the oscillator coil. Phico oscillator coils are sometimes often. You might be able to see a green spot on the coil?
:::::
:::::Norm
:::::
::::::I have checked all coils and rewound an open one (the small cathode coil 6 ohms). The rectifier is good and the 42 is good. I replaced them with good ones that I had in another radio. I dont have extra 36's so I am using the ones that came with the radio. All filaments are good (not open). The radio is recapped properly.
::::::
::::::The only thing I am not sure about is the speaker. The small transformer is 367 ohms on the primary (good) and .7-.9 ohms on the secondary, it should be 11 ohms, (I unsoldered it from the speaker cone so it was solo) and the speaker cone coil is 1.8 ohms and should be 1 ohm.
::::::
::::::All plate voltages are high (440v DC) as is the rectifier pins and the electrolytics as well are the same voltage.
::::::
::::::I am not sure where to go from here. Thanks ahead for your advice. I may order new 36's this week and try with them in. I dont have a tester.
::::::
:::::
::::
:::
::
:
You mentioned having 445 volts between B- and B+ but nothing from chassis. There is a resistor of 325 ohms, chassis to B-, so should have had voltage.
You can see a schematic here:
http://www.nostalgiaair.org/PagesByModel/843/M0013843.pdf
Norm
:Thanks I won't be able to change it out until next week. I'll let you know how it operates.
:
:If you have a moment, can you explain why you think it is resistor 36?
:
:I can't test it now as I am traveling until Friday. I brought my schematic so I'd like to see what you mean for my learning benefit.
:
:Thanks for all your help.
:
:Steve
:
::Hi Steve
::
:: You found the problem. Resistor #36 (325 ohms) between B- and chassis open. You can use a 2 watt 330 ohm resistor is you don't have a wire wound.
::
::Norm
::
::
::
::
:::Hi Norm,
:::
:::I switched out the 80 rectifier and the 42 with ones from a 118B I use every day. The 118B plays with the tubes I had in the Jr and now the Jr has the tubes that were working in the 118B, so I am sure they are good. I can't test the 36's, I don't have any others, I may order two as I want replacements/spares anyway.
:::
:::That said, the 42, and 36's all have 445 v at the plate when I check them against the negative of the electrolytic (is that B minus?). To chassis ground I dont get aything. There is a very slight hum at the speaker, very slight.
:::
:::No sound/response at all when I touch either 36 grid. It seems dead. I checked the cap blocks and the caps are correctly wired. My schematic is not accurate for my Run 11, I have 4 bakelite blocks, not 5, so there are portions I am not sure as to connections. All looks good though.
:::
:::All coils are solid. I did reverse the little one that I re-wound in case I made a mistake, but no change. I also jumped over the volume control direct to the antenna coil and no change.
:::
:::The 4 M resistor is 5.5M. That's almost an open? I may change that next week when I get to work on this again. I may try a 2M (Philco site suggestion). Would that make a difference? I dont think so, but I am not sure what to check next.
:::
:::I'll check the solder joints again, just in case.
:::
:::Steve
:::
:::
:::
:::
::::Hi Steve
::::
:::: The output tube draws most current and should load down voltage.
::::
:::: Be sure the 42 is good. You mentioned it was good before but this is the only tube which can load down voltage very much. Maybe voltage is missing at one of the pins? If it has voltage on pin #2 and #3 with slightly negative (-15 volts)on pin #4, pin #5 grounded it should be loading down voltage.
::::
:::: Noticed I typed 35 rather than 36 in previous post. Glad you understood anyway.. With proper voltages on the 42 do you hear hum touching top of the 36?
::::
::::Norm
::::
::::
::::
:::::Hi Norm,
:::::
:::::I tried to inject a signal into the grid and touched it as well. It is totally silent. The small coil that feeds the cathode, 1 Detector was open. I took it out and rewound it. I did this once before on a Mod 60, so I was familiar with how to do it. It was still totally dead after that.
:::::
:::::All the tubes are very high plate v. I suspect none are conducting. I am not sure what would cause that. Even an open coil should let you put a signal through, wouldn't it? I neeed to look at the IF transformer (the one with the 4M resistor in it) again, but I do think it is not open anywhere based on my tests so far.
:::::
:::::Thanks for helping.
:::::
::::::Steve
::::::
:::::: Touch top of the 35, 2nd detector. You should hear hum if audio section of the radio is ok.
::::::
:::::: Check continuity of the oscillator coil. Phico oscillator coils are sometimes often. You might be able to see a green spot on the coil?
::::::
::::::Norm
::::::
:::::::I have checked all coils and rewound an open one (the small cathode coil 6 ohms). The rectifier is good and the 42 is good. I replaced them with good ones that I had in another radio. I dont have extra 36's so I am using the ones that came with the radio. All filaments are good (not open). The radio is recapped properly.
:::::::
:::::::The only thing I am not sure about is the speaker. The small transformer is 367 ohms on the primary (good) and .7-.9 ohms on the secondary, it should be 11 ohms, (I unsoldered it from the speaker cone so it was solo) and the speaker cone coil is 1.8 ohms and should be 1 ohm.
:::::::
:::::::All plate voltages are high (440v DC) as is the rectifier pins and the electrolytics as well are the same voltage.
:::::::
:::::::I am not sure where to go from here. Thanks ahead for your advice. I may order new 36's this week and try with them in. I dont have a tester.
:::::::
::::::
:::::
::::
:::
::
: