Guyatone ZIP 401 with PCB EPK-222

[Silviu]

Hello everyone

I have a Guyatone ZIP 401 guitar amp in need of repair. It was previously opened and repaired by someone else, and i believe it was repaired wrong by using different capacitor types, maybe also different values.

I can't seem to find any schematic on the web, or photos of the original  PCB and internals.

Maybe someone has one , or can point me in the right directions of repairing this amp

I will reconstruct the schematic bit by bit, but i don't really have the knowledge of recalculating the correct capacitor values of OP-AMP ics in guitar amps.