Kenwood KAC-X501F Car Audio Amplifier "south africa" Questions

...South Africa.it didn't die while playing.It died when i put it back on.Was playing fine with the last run but when i put back on there wasn't a kilo of bass?? all channels wouldnt blow at same ...

...South Africa) who sold it to me anymore. I'd like to repair it myself. 1. Info: a) I have determined that two IRF540's on the right channel (one on the push side, one on the pull side) have blown ...