Sony STR 6060F Stereo Receiver Repair Part 2 - Power Switch Repair and Control Cleaning

[@Wil_Bloodworth]

What new camera did you get?

[@millervintagehifi3034]

Sony Z-EV10.

[@verdict1163]

Dumb question but where is the power amplifier board? I'm trying to set the bias and not sure which one it is. EDIT: I figured out where it is but no idea how you're supposed to get the probes on there. Really tight.

[@millervintagehifi3034]

They aren't the most service-friendly unit for sure.

[@verdict1163]

@@millervintagehifi3034 I was able to read the bias but adjusting the pot does nothing. I'm guessing it's bad or needs cleaning. Fortunately the bias was set low and not high.

[@millervintagehifi3034]

@@verdict1163 If bias isn't adjusting, I'd suspect another component (bias transistor) as being bad. In my (limited) experience, bad trim pots usually result in bias readings that increase/decrease erratically. YMMV

[@verdict1163]

@@millervintagehifi3034 That makes sense. Thanks for the insight.