Pioneer GM-X522

[S Merlington]

Anyone know of this amp is using muting transistors ?

I'm getting both positive and negative rail and regulated voltages ..

Amp
Has no output ..

 

[Perry Babin]

Q204 and Q205.

I'd suspect switches or pots.

I think I remember one similar amp with a bad op-amp near the RCAs.

 

[S Merlington]

Removed Q204,205 amp plays clean audio now ..

I will replace them and test