RCA 26X4

2/20/2010 7:27:38 PMWyatt W.

Hello. I recently have purcahsed a 1941 RCA 26X4. I cleaned the cabinet up and cleaned the dust and dirt out of the interrior. Today I plugged it in and got no sound or even a hum from the transformer. I thought it could be a bad cord or tube but I would think that it would at least make noise. Any help would be greatly appreciated.

Thanks

2/20/2010 7:44:00 PMNorm Leal

RCA 26X4 is an AC/DC radio. All tube filaments are wired in series. If one burns out nothing lights.

http://www.nostalgiaair.org/PagesByModel/865/M0014865.pdf

With an ohm meter check continuity of tube filaments. Pins #2 and #7 are filament on all tubes except 12SQ7. On that tube it's pin 7 and 8. Pins 2 and 7 are second pins each side of the keyway.

There may still be other things wrong if filter caps haven't recently been replaced. Replacement parts are not expensive.

Norm

:Hello. I recently have purcahsed a 1941 RCA 26X4. I cleaned the cabinet up and cleaned the dust and dirt out of the interrior. Today I plugged it in and got no sound or even a hum from the transformer. I thought it could be a bad cord or tube but I would think that it would at least make noise. Any help would be greatly appreciated.
:
:Thanks
:

2/20/2010 8:07:30 PMWyatt W.

:Hi
:
: RCA 26X4 is an AC/DC radio. All tube filaments are wired in series. If one burns out nothing lights.
:
:http://www.nostalgiaair.org/PagesByModel/865/M0014865.pdf
:
: With an ohm meter check continuity of tube filaments. Pins #2 and #7 are filament on all tubes except 12SQ7. On that tube it's pin 7 and 8. Pins 2 and 7 are second pins each side of the keyway.
:
: There may still be other things wrong if filter caps haven't recently been replaced. Replacement parts are not expensive.
:
:Norm
:
:
:
::Hello. I recently have purcahsed a 1941 RCA 26X4. I cleaned the cabinet up and cleaned the dust and dirt out of the interrior. Today I plugged it in and got no sound or even a hum from the transformer. I thought it could be a bad cord or tube but I would think that it would at least make noise. Any help would be greatly appreciated.
::
::Thanks
::
:

2/20/2010 8:12:22 PMNorm Leal

You may find a new electrolytic cap was added to replace the one cut loose? This cap has 2 sections. Should have a red, green and black wire. One section was 30 mf @ 150 volts. The other 50 mf @ 150 volts.

This will not stop tubes from lighting. Only an open tube filament (very common) bad switch or line cord will stop them from lighting.

Norm

::Hi
::
:: RCA 26X4 is an AC/DC radio. All tube filaments are wired in series. If one burns out nothing lights.
::
::http://www.nostalgiaair.org/PagesByModel/865/M0014865.pdf
::
:: With an ohm meter check continuity of tube filaments. Pins #2 and #7 are filament on all tubes except 12SQ7. On that tube it's pin 7 and 8. Pins 2 and 7 are second pins each side of the keyway.
::
:: There may still be other things wrong if filter caps haven't recently been replaced. Replacement parts are not expensive.
::
::Norm
::
::
::
:::Hello. I recently have purcahsed a 1941 RCA 26X4. I cleaned the cabinet up and cleaned the dust and dirt out of the interrior. Today I plugged it in and got no sound or even a hum from the transformer. I thought it could be a bad cord or tube but I would think that it would at least make noise. Any help would be greatly appreciated.
:::
:::Thanks
:::
::
:
:
:
:Thanks Norm. I will try that. I also was looking under the chassis and found a large electrolytic with two wires on one end that were cut and no loose wires were around or near it. That could be the problem. I will try checking the tubes.
:
:Thanks
:

2/20/2010 8:43:40 PMWyatt W.

:You may find a new electrolytic cap was added to replace the one cut loose? This cap has 2 sections. Should have a red, green and black wire. One section was 30 mf @ 150 volts. The other 50 mf @ 150 volts.
:
:This will not stop tubes from lighting. Only an open tube filament (very common) bad switch or line cord will stop them from lighting.
:
:Norm

That is exactly what it is. there is a red and a green and a black wire and they have all been snipped. it looked like there were some other things replaced but they were not much newer than the 60's because they are wax covered.

Thanks
:
:::Hi
:::
::: RCA 26X4 is an AC/DC radio. All tube filaments are wired in series. If one burns out nothing lights.
:::
:::http://www.nostalgiaair.org/PagesByModel/865/M0014865.pdf
:::
::: With an ohm meter check continuity of tube filaments. Pins #2 and #7 are filament on all tubes except 12SQ7. On that tube it's pin 7 and 8. Pins 2 and 7 are second pins each side of the keyway.
:::
::: There may still be other things wrong if filter caps haven't recently been replaced. Replacement parts are not expensive.
:::
:::Norm
:::
:::
:::
::::Hello. I recently have purcahsed a 1941 RCA 26X4. I cleaned the cabinet up and cleaned the dust and dirt out of the interrior. Today I plugged it in and got no sound or even a hum from the transformer. I thought it could be a bad cord or tube but I would think that it would at least make noise. Any help would be greatly appreciated.
::::
::::Thanks
::::
:::
::
::
::
::Thanks Norm. I will try that. I also was looking under the chassis and found a large electrolytic with two wires on one end that were cut and no loose wires were around or near it. That could be the problem. I will try checking the tubes.
::
::Thanks
::
:

2/20/2010 9:36:49 PMWyatt W.

::You may find a new electrolytic cap was added to replace the one cut loose? This cap has 2 sections. Should have a red, green and black wire. One section was 30 mf @ 150 volts. The other 50 mf @ 150 volts.
::
::This will not stop tubes from lighting. Only an open tube filament (very common) bad switch or line cord will stop them from lighting.
::
::Norm
:
:That is exactly what it is. there is a red and a green and a black wire and they have all been snipped. it looked like there were some other things replaced but they were not much newer than the 60's because they are wax covered.
:
:Thanks
::
::::Hi
::::
:::: RCA 26X4 is an AC/DC radio. All tube filaments are wired in series. If one burns out nothing lights.
::::
::::http://www.nostalgiaair.org/PagesByModel/865/M0014865.pdf
::::
:::: With an ohm meter check continuity of tube filaments. Pins #2 and #7 are filament on all tubes except 12SQ7. On that tube it's pin 7 and 8. Pins 2 and 7 are second pins each side of the keyway.
::::
:::: There may still be other things wrong if filter caps haven't recently been replaced. Replacement parts are not expensive.
::::
::::Norm
::::
::::
::::
:::::Hello. I recently have purcahsed a 1941 RCA 26X4. I cleaned the cabinet up and cleaned the dust and dirt out of the interrior. Today I plugged it in and got no sound or even a hum from the transformer. I thought it could be a bad cord or tube but I would think that it would at least make noise. Any help would be greatly appreciated.
:::::
:::::Thanks
:::::
::::
:::
:::
:::
:::Thanks Norm. I will try that. I also was looking under the chassis and found a large electrolytic with two wires on one end that were cut and no loose wires were around or near it. That could be the problem. I will try checking the tubes.
:::
:::Thanks

I think I found The problem. The tube 35L6gt is fried. it is a zeinith tube that looks like one that would go in a atwater kent radio. I will try to get andother tube or cross refrence one that i may have in one of my other radios.

Wyatt
:::
::
:

2/21/2010 12:23:07 AMWarren

Before you put another tube in the set. Look for what caused that tube to go bad. A shorting dial lamp socket is the first thing to check for. If someone has been into the set as you say, look for other faults in the heater circuit before you apply any A.C.

2/21/2010 12:38:25 PMWyatt W.

:Before you put another tube in the set. Look for what caused that tube to go bad. A shorting dial lamp socket is the first thing to check for. If someone has been into the set as you say, look for other faults in the heater circuit before you apply any A.C.
:

2/21/2010 12:38:46 PMWyatt W.

2/21/2010 12:38:51 PMWyatt W.