04-15-2020, 10:46 AM
Troubleshooting your radio, here are my thoughts (some of which may have been covered in earlier posts):
You say it receives no AM or FM stations. First thing to check is whether the audio stages are working - inject signal at the volume control. Anything from the speaker, hum, crackle, hiss? It was mentioned before to check windings on speaker, field coil transformer etc.
If not, back to basics. Are all the valves (tubes) seeing heater power and HT? From what I understand, if it is a series heater string set, if one heater is open, the set stops working. Easy enough to check the filament on each tube for continuity. If that is not the cause, establish whether there is B+
Logical detective work will reveal the problem
Ed
You say it receives no AM or FM stations. First thing to check is whether the audio stages are working - inject signal at the volume control. Anything from the speaker, hum, crackle, hiss? It was mentioned before to check windings on speaker, field coil transformer etc.
If not, back to basics. Are all the valves (tubes) seeing heater power and HT? From what I understand, if it is a series heater string set, if one heater is open, the set stops working. Easy enough to check the filament on each tube for continuity. If that is not the cause, establish whether there is B+
Logical detective work will reveal the problem
Ed
I don't hold with furniture that talks.
