Quote:
Originally Posted by Kevin Kuehn
The voltage on the cathode of the audio output(pin 1) supplies 135v to the audio IF, tuner, video IF, and video out circuits. Basically the tube is used as a b+ dropper to supply the lower b+. If you operate the TV with the audio output tube pulled, those other circuits will loose their b+. Good to verify that 135v volts is in the ballpark.
|
I finally figured it out, one of the 6AL5 tubes wasn't making a good connection in its socket, and after moving it around a bit the audio comes in just fine.
01-31-2021, 04:46 AM
Threaded Mode