[R-390] R-390 Audio Gain

[Steve Hobensack]

I had a similar situation with the local gain. The volume wouldn't go quiet. Later I noticed that the line gain would silence the speaker and it wasn't even connected to a speaker. I found the problem with a bad (open) electrolytic cap in the audio deck. It was connected to the
6ak6 screens and common to them, the audio was mixing between the two audio output tubes.
Steve N8YE