Who Can Fix/repair A 4 Channel?

[Bumpindemlowzz]

My brother has a pyle chopper series pla4200. Its a 2000 watt 4 channel mosfet amplifier. I took off the back cover and everything looks good (No brown or burnt spots) but i took it to the local stereo shop and they said a couple channels are fried or the whole thing altogether. I know its not the best amp but for what he had it sound good. Anyone?

[Boon]

The repair bill will almost certainly be more than the amp's worth unfortunately.