Thu Oct 31, 2019 6:27 pm
If the amp is really "shorted", it won't "repair" itself (play at all). Is the problem consistent on all of the channels? That is, are only certain of the channels involved? Do the 4 channels that produce sound, sound okay? Are they distorted or softer than normal? Have you tried switching the speaker connections? Are you certain all of the speakers are ok, that they do "play"? Are there any loose connections either on the input or the output? If it can only drive 4 spkrs at a time, it could be an internal power supply component issue.
Rgds,
Ed