So I have troubleshooted many issues from this forsaken amp. The issue that I face now is when the amp is on, it works fine, when it is cranked past 5 it starts to decrease in volume and then increase. I checked the TDA7293 power IC, and it is very hot. The cooling fan is running just fine. Any suggestions as to why this power chip is overheating? BTW, the amp is an MG100hdfx from 2003.