ok so a guy i know has a pignose hog 20 and hes asked me to repair it.  after taking it apart and running through it with an audio probe it appears to me as if the main IC has died, but i would like to see a schematic of the amp if i can get my hands on it so i can double check my assessment.  does anyone happen to know where i can get one?  ive tried and tried but cant seem to dig one up.  any help would be greatly appreciated.

What is the main IC?