GE L-660 tubes don't work.

[maxhifi]

check that the tubes are in the right sockets - looks like you have the mixed up as per riders diagram on nostalgia air

[HiFiCanada]

Originally Posted by maxhifi

check that the tubes are in the right sockets - looks like you have the mixed up as per riders diagram on nostalgia air

Wow, I am sure glad that I posted a picture.
Yes, all the tubes are all in the wrong places and I would have never thought that the diagram was wrong. So now I can't trust the the schematics. I changed all the tubes around , according to the label underneath the cabinet and slowly turned the power back up with the variac and all the tubes light up.
Now I have a lot of hum, and if I just touch or tap the rectifier tube 35Z5 it almost sounds like I am taping a microphone. If I just tap it, the hum is louder and then just press on the tube, the hum gets a bit softer again.
The whole radio is recapped except two of the molded caps and I have not check the wiring to the schematic to see if it is all that it should be. I recapped the radio exactly to each capacitor what was in the radio, one by one, so I did not make a mistake unless it was wrong before.
I am getting zero radio reception and I may just try some other tubes from my stash.

[maxhifi]

Originally Posted by HiFiCanada

Wow, I am sure glad that I posted a picture.
Yes, all the tubes are all in the wrong places and I would have never thought that the diagram was wrong. So now I can't trust the the schematics. I changed all the tubes around , according to the label underneath the cabinet and slowly turned the power back up with the variac and all the tubes light up.
Now I have a lot of hum, and if I just touch or tap the rectifier tube 35Z5 it almost sounds like I am taping a microphone. If I just tap it, the hum is louder and then just press on the tube, the hum gets a bit softer again.
The whole radio is recapped except two of the molded caps and I have not check the wiring to the schematic to see if it is all that it should be. I recapped the radio exactly to each capacitor what was in the radio, one by one, so I did not make a mistake unless it was wrong before.
I am getting zero radio reception and I may just try some other tubes from my stash.

Double check that all the tubes are in the right places. The 35Z5 can cause hum related problems sometimes, try replacing it.

I think checking the radio against the schematic will probably find the problem faster than typing on here. Measure all the voltages too, and compare vs riders. Double check elecrolytic capacitors for polarity.

When you check the wiring, don't take for granted anything in that radio is correct - the speaker is already at least 15 years newer than the radio itself, so who knows what else was changed.

If it's not a tube, or something simple, Use signal tracing to fix the radio. Go through the radio stage by stage, and touch the grid of each tube with a screwdriver. Work backwards, starting with the 50L6. You should hear a noise in the speaker each time you touch the grid. When you hear nothing, you have isolated the stage where the signal is dissapearing.

[HiFiCanada]

Originally Posted by maxhifi

Double check that all the tubes are in the right places. The 35Z5 can cause hum related problems sometimes, try replacing it.

I think checking the radio against the schematic will probably find the problem faster than typing on here. Measure all the voltages too, and compare vs riders. Double check elecrolytic capacitors for polarity.

When you check the wiring, don't take for granted anything in that radio is correct - the speaker is already at least 15 years newer than the radio itself, so who knows what else was changed.

If it's not a tube, or something simple, Use signal tracing to fix the radio. Go through the radio stage by stage, and touch the grid of each tube with a screwdriver. Work backwards, starting with the 50L6. You should hear a noise in the speaker each time you touch the grid. When you hear nothing, you have isolated the stage where the signal is dissapearing.

Thanks ,I'll try that this weekend I have got some time to go through everything and try to isolate the problem.

[maxhifi]

Originally Posted by HiFiCanada

Wow, I am sure glad that I posted a picture.
Yes, all the tubes are all in the wrong places and I would have never thought that the diagram was wrong. So now I can't trust the the schematics. I changed all the tubes around , according to the label underneath the cabinet and slowly turned the power back up with the variac and all the tubes light up.
Now I have a lot of hum, and if I just touch or tap the rectifier tube 35Z5 it almost sounds like I am taping a microphone. If I just tap it, the hum is louder and then just press on the tube, the hum gets a bit softer again.
The whole radio is recapped except two of the molded caps and I have not check the wiring to the schematic to see if it is all that it should be. I recapped the radio exactly to each capacitor what was in the radio, one by one, so I did not make a mistake unless it was wrong before.
I am getting zero radio reception and I may just try some other tubes from my stash.

It just occured to me - long shot, but if I'm right it'll save hassle - the diagram is not wrong, you are aware, that the diagram on the bottom left is a BOTTOM view of the chassis. It looks exactly like the chassis in your picture, so double check again the tube locations.

You could still have the tubes in wrong and have them lighting up.