C8 and C9 have been removed. Resistance on output transformer is 260 ohms. Question: Should pin 8 of 35L6 tube have continuity with any other component in the radio other than C12, C9, and R9? Looking for a miswire.
Allen

Assuming that the schematic is correct, no.

BTW, typical impedance for a 35L6 audio transformer single-ended primary is 2000 ohms. Of course, this is real+reactive resistance measured at some audio frequency (400 Hz?) and the "real" resistance (at 0 Hz, or DC) measured with a VOM will be lower. 260 ohms seems a little low to me but might be in the ballpark. At least it isn't a dead short.

:Assuming that the schematic is correct, no.
:
Thanks CV for taking the time to look at the schematic.
There must be some miswires somewhere then because I get continuity at several points, beginning between R9 and R8. I'm really at a loss. I'm not really an electronics whiz, just a hobbyist graduating from player pianos and crank phonos and an ocassional jukebox amp. Perhaps it's time to go to another project that has not been "messed" with by an earlier tech. Allen

::Assuming that the schematic is correct, no.
::
:Thanks CV for taking the time to look at the schematic.
:There must be some miswires somewhere then because I get continuity at several points, beginning between R9 and R8. I'm really at a loss. I'm not really an electronics whiz, just a hobbyist graduating from player pianos and crank phonos and an ocassional jukebox amp. Perhaps it's time to go to another project that has not been "messed" with by an earlier tech. Allen
:
:There is also continuity from pin 8 of the 35L6 to pin 5 of the 12K7.

At this point it might be helpful to "bug out" every component in the set to ensure that each part is correctly installed. This isn't a complex radio so it shouldn't be too time-consuming. Recommend you make a large copy of the schematic and use a colored marker to highlight each node connection and part that you check out as you go along.

:At this point it might be helpful to "bug out" every component in the set to ensure that each part is correctly installed. This isn't a complex radio so it shouldn't be too time-consuming. Recommend you make a large copy of the schematic and use a colored marker to highlight each node connection and part that you check out as you go along.
:
CV-Something else I find strange in this radio is that R9 (that looks original to the radio) is actually a mica capacitor (flat black rectangle with painted dots) as are the two R10's. Of course as I stated, I'm not all that educated but I know (or thought I knew) what a resistor looks like as compared to a capacitor. The schematic calls these wirewound resistors but they look like capacitors to me. Are wirewound resistors the same as capacitors? Educate me further please.

I recently repaired a set that had a few wirewound resistors that do look at first glance to be mica caps by the way they're cased and marked. May have been a Zenith or Philco.
"Are wirewound resistors the same as capacitors? Educate me further please."
No way!....They are resistors that are wirewound for either accuracy or a higer wattage rating. Caps are caps..as resistors are always resistors...they don't interchange.

:I recently repaired a set that had a few wirewound resistors that do look at first glance to be mica caps by the way they're cased and marked. May have been a Zenith or Philco.
: "Are wirewound resistors the same as capacitors? Educate me further please."
:No way!....They are resistors that are wirewound for either accuracy or a higer wattage rating. Caps are caps..as resistors are always resistors...they don't interchange.
:
:I glanced a second and third time and they still look like capacitors to me. Black, flat, three dots, arrow direction. Also they all have continuity from one side to the other. Never known a resistor like that. Strange, very strange. But they read correctly at 150 ohms and 22 ohms each for the R10s. Schematic calls for resistors, parts lineup lists resistors - resistors look like capacitors. Strange.

Fellows,

There are some old wirewound resistors that are flexable covered with a material of sorts. Some even had a color code on them.

Clifton

:I recently repaired a set that had a few wirewound resistors that do look at first glance to be mica caps by the way they're cased and marked. May have been a Zenith or Philco.
: "Are wirewound resistors the same as capacitors? Educate me further please."
:No way!....They are resistors that are wirewound for either accuracy or a higer wattage rating. Caps are caps..as resistors are always resistors...they don't interchange.
:
:
:

Hi Allen,
I have prowled the guts of many Zeniths of this vintage. Zenith commonly used wire wound resistors that looked like silver mica capacitors.
That is what you are seeing and it threw me the first time, too. Imagine 22pf and it measures 22 ohms!
It's a resistor, always has been.

Best Regards,

Bill g.

Most likely a Micamold resistor. Read the colors from left to right with the arrow pointing to the right.

Clifton

::At this point it might be helpful to "bug out" every component in the set to ensure that each part is correctly installed. This isn't a complex radio so it shouldn't be too time-consuming. Recommend you make a large copy of the schematic and use a colored marker to highlight each node connection and part that you check out as you go along.
::
:CV-Something else I find strange in this radio is that R9 (that looks original to the radio) is actually a mica capacitor (flat black rectangle with painted dots) as are the two R10's. Of course as I stated, I'm not all that educated but I know (or thought I knew) what a resistor looks like as compared to a capacitor. The schematic calls these wirewound resistors but they look like capacitors to me. Are wirewound resistors the same as capacitors? Educate me further please.
:

From the junction of R8 & R9 you should measure zero Ohms to the cathodes of the 12A8, 12K7 (12K7 pin 5 also) and 12Q7. From that point you should measure zero, or, 15 Ohms if R3 is present, to the on/off switch. Is the high voltage present on pin 8 of the 35L6 with C12 disconnected? My thought is that the minus of C12 may be connected to B+ instead of B-.

Clifton

:C8 and C9 have been removed. Resistance on output transformer is 260 ohms. Question: Should pin 8 of 35L6 tube have continuity with any other component in the radio other than C12, C9, and R9? Looking for a miswire.
:Allen
:

:From the junction of R8 & R9 you should measure zero Ohms to the cathodes of the 12A8, 12K7 (12K7 pin 5 also) and 12Q7. From that point you should measure zero, or, 15 Ohms if R3 is present, to the on/off switch. Is the high voltage present on pin 8 of the 35L6 with C12 disconnected? My thought is that the minus of C12 may be connected to B+ instead of B-.
:
:Clifton

Also, could it be possible that R3 at some time burned out and a jumper put in it's place. But instead of the jumper between R8 & R9 junction to C8, R12, C12 junction the R8 & R9 junction was connected to B+?

Clifton

:
:
::C8 and C9 have been removed. Resistance on output transformer is 260 ohms. Question: Should pin 8 of 35L6 tube have continuity with any other component in the radio other than C12, C9, and R9? Looking for a miswire.
::Allen
::
:
:

::From the junction of R8 & R9 you should measure zero Ohms to the cathodes of the 12A8, 12K7 (12K7 pin 5 also) and 12Q7. From that point you should measure zero, or, 15 Ohms if R3 is present, to the on/off switch. Is the high voltage present on pin 8 of the 35L6 with C12 disconnected? My thought is that the minus of C12 may be connected to B+ instead of B-.
::
::Clifton
:
:Also, could it be possible that R3 at some time burned out and a jumper put in it's place. But instead of the jumper between R8 & R9 junction to C8, R12, C12 junction the R8 & R9 junction was connected to B+?
:
:Clifton
:
::
::
:::C8 and C9 have been removed. Resistance on output transformer is 260 ohms. Question: Should pin 8 of 35L6 tube have continuity with any other component in the radio other than C12, C9, and R9? Looking for a miswire.
:::Allen
:::High voltage is present with C12 disconnected. The high voltage is on pin 8 when 35L6 is removed, it comes from the output transformer on the speaker. How should I test this for shorts?
::
::
:
:

"High voltage is present with C12 disconnected. The high voltage is on pin 8 when 35L6 is removed, it comes from the output transformer on the speaker."

What you are describing is only reasonably possible if C9 is shorted, assuming that the set is wired per the schematic. You did verify the wiring against the schematic, didn't you?

One unreasonable possibility is that there is a short circuit from pin 3 (plate) to pin 8 (cathode) on the 35L6 tube socket itself. This should be easy to confirm/discount with an ohmmeter check and a CLOSE visual inspection of the wired side of the socket. I've never seen an octal socket carbonize, which some phenolic miniature tube sockets used in miniature (baseless) audio output or rectifier tubes are prone to do from intense heat. If there is a pins 3 to 8 short, it would almost have to be due to a stray wire or lost insulation that causes the wires to the two respective pins to touch.

I totally agree!
Do you remember my post a few days ago about a possible short from pin-8 to either the plate pin-3 or the SG pin-4?
Check that wire on pin-4 that is supposed to go to the tone sw. Does that wire somehow connect to the cathode pind-8?

Pin-8 must have something connecting it to the B+ in ERROR.

:I totally agree!
:Do you remember my post a few days ago about a possible short from pin-8 to either the plate pin-3 or the SG pin-4?
:Check that wire on pin-4 that is supposed to go to the tone sw. Does that wire somehow connect to the cathode pind-8?
:
:Pin-8 must have something connecting it to the B+ in ERROR.
:Please disregard the comment about voltage when 35L6 is removed. That was in error. So sorry. The voltage is 280+ volts between Pin 8 and R12 with C12 removed. zero ohm between Pin 8 and Pin 3. Likewise Pin 8 to Pin 4. I don't won't to give up but I'm beginning to think this radio is costing you guys and myself more time than it's worth.
:

Is the short between pins 8, 3, and 4 still there with the radio off and the 35L6 removed?

Clifton

::I totally agree!
::Do you remember my post a few days ago about a possible short from pin-8 to either the plate pin-3 or the SG pin-4?
::Check that wire on pin-4 that is supposed to go to the tone sw. Does that wire somehow connect to the cathode pind-8?
::
::Pin-8 must have something connecting it to the B+ in ERROR.
::Please disregard the comment about voltage when 35L6 is removed. That was in error. So sorry. The voltage is 280+ volts between Pin 8 and R12 with C12 removed. zero ohm between Pin 8 and Pin 3. Likewise Pin 8 to Pin 4. I don't won't to give up but I'm beginning to think this radio is costing you guys and myself more time than it's worth.
::
:
:

You say:
" zero ohm between Pin 8 and Pin 3. Likewise Pin 8 to Pin 4. "

When you say "zero oms" ....do you mean "open" or shorted?

:You say:
:" zero ohm between Pin 8 and Pin 3. Likewise Pin 8 to Pin 4. "
:
:When you say "zero oms" ....do you mean "open" or shorted?
:
:I mean they are not connected in any way.
:

To facilitate future discussions, "zero ohms" means two points are electrically connected together, as in "dead short". "Infinite ohms" means that two points are electrically isolated, as in "open circuit".

You might want to consider turning over further troubleshooting of this set to someone with more electronic experience.

:To facilitate future discussions, "zero ohms" means two points are electrically connected together, as in "dead short". "Infinite ohms" means that two points are electrically isolated, as in "open circuit".
:
:You might want to consider turning over further troubleshooting of this set to someone with more electronic experience.
:
Sincere thanks for the clarification of electronic nomenclature. I admit I do not have a great deal of experience with radio troubleshooting. However, I'm thankful for places like the forum that can guide and direct me in my efforts to learn. I also thank you for what I perceive as a kind way of telling me to be careful. I do know enough to use caution and you may be right about it being time to give up on this particular set. I have recapped other radios and can generally follow a schematic but someone else had a hold of this one between me and the factory. Allen

Something is definitely wrong there.
It may be a simple mis-wire.

Take some time and trace everything around that 35L6

:"High voltage is present with C12 disconnected. The high voltage is on pin 8 when 35L6 is removed, it comes from the output transformer on the speaker."
:
:What you are describing is only reasonably possible if C9 is shorted, assuming that the set is wired per the schematic. You did verify the wiring against the schematic, didn't you?
:
:One unreasonable possibility is that there is a short circuit from pin 3 (plate) to pin 8 (cathode) on the 35L6 tube socket itself. This should be easy to confirm/discount with an ohmmeter check and a CLOSE visual inspection of the wired side of the socket. I've never seen an octal socket carbonize, which some phenolic miniature tube sockets used in miniature (baseless) audio output or rectifier tubes are prone to do from intense heat. If there is a pins 3 to 8 short, it would almost have to be due to a stray wire or lost insulation that causes the wires to the two respective pins to touch.
: