Trying to repair a fender FM15 DSP that blows the F2 fuse. Trying to use an audio probe but can't read schematics. very well. Need to trace signal from input to out put. Can anyone help me? I also think the problem could be in the DSP board but not sure the schematic even shows it. Would like to know how to bypass it if possible. This is a learning project for me so don't need to buy another amp Thanks.I