I have an old school punch 75 pre hd that has a bad crackling in 1 channel. It was both channels. I replaced all output fets, all the ao6 and a56 transistors, all emitter resistors and 1 side works great but the other does not. The side that does not work will not bias either. I did find a very burnt resistor just in front of the transformer but don't know if it is part of the chaneel or causing the problem. Its so burnt I can't tell the value. Its right next to a IN5336B diode. A picture would be nice. Please help??

Car Audio & Video - Rockford Fosgate - 100a2 Car Audio Amplifier