Hello, I am attempting to repair a Pioneer QX-4000 receiver which has a very nasty problem, whenever the volume is turned up more than the slightest amount there is a very large amount of distortion. This problem occurs in both front channels and all inputs. It also is common to the headphone output and the speaker outputs. The problem gets worse when bass is turned up or loudness is turned on making me think that it is clipping the signal somewhere. Does anyone have any idea how to diagnose this? I have a multimeter and just enough knowledge of electronics to be dangerous. Thanks in advance for your ideas.
-Randall
-Randall