ProCo Rats repair

Got two Rats of different generations on the bench for repair. The v2 to the left, not working at all. The other one did not reach unity gain.

ProCo Rat
ProCo Rats
ProCo Rat
ProCo Rats guts

I had to replace a malfunctioning jfet source follower on the output stage on the old Rat.

ProCo Rat
Non working jfet transistor

The other one had already been messed with. There were several copper traces on the circuit board that had to be mended, the opamp was burnt and wires not connected. Managed to bring it back to life again.

ProCo Rat
ProCo Rat V2


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