Hartke HA-3500 static noise. Traced to output board thus far.

[Indyryder02]

Now that looks better but likely somewhat low (by 0.5V or so).
I guess both pot wipers have lost contact to the trace.

I have them both turned all the way down since I couldn’t tell what the bias was.

so I just checked the good amp across test points and was able to adjust the bias up to 25mv. Which seems to be ok for these.

no clue why I couldn’t get readings there before.. but anyway.

the bad amp still has 0.0v across test points. I’m suspecting SVR302 on that amp is also bad.