Perry has an incredible knowledge of amp design / repair. I’ve been a member over there since 2007 and like I said, if anyone can try to walk you through a repair, it is him, but you have to follow whatever he asks, and do so clearly. If he asks for voltages on specific IC’s, transistors, diodes, etc., don’t stray off track, best to answer just with what he asks so he can try to narrow down the problem for you. Some amps are rather difficult on occasion and or overwhelming, make matters worse is, that is a modern very big amp to dive into car amp repair on. Try not to get ahead of yourself and go slowly. Good luck with it.