07-30-2015, 06:52 PM
Hi Nick,
<So, I think that means I can say for sure the audio stage, tone controls, and speaker are not causing the issue. So now I'm left trying to figure out what in the earlier stages is causing some kind of distortion that is being filtered out on the "no bass" setting, but comes through on the other 2 settings.
If I'm reading your previous paragraph correctly your issue could be in the 1st audio stage. So you know the drill check plate,grid, and cathode voltage for anything that seem hi or low.
Check 31 to see if it is open, 32 gone high, replace 34 for the heck of it.
GL
Terry
<So, I think that means I can say for sure the audio stage, tone controls, and speaker are not causing the issue. So now I'm left trying to figure out what in the earlier stages is causing some kind of distortion that is being filtered out on the "no bass" setting, but comes through on the other 2 settings.
If I'm reading your previous paragraph correctly your issue could be in the 1st audio stage. So you know the drill check plate,grid, and cathode voltage for anything that seem hi or low.
Check 31 to see if it is open, 32 gone high, replace 34 for the heck of it.
GL
Terry
