(2) Sundown SCV7500 customer amps came in not working. Amp 1 had a failed PS and a partial failed Output. Amp 2 had a partial failed Output.

Using both output sections, I was able to rebuild one output with matching FETs in each bank. Amp 2 was tested and performed as designed.

Amp 1 needed a full set of PS FETs (24) and a full set of output FETs (24). After replacing all FETs, amp 1 performed as designed.

Both amps PS and output drive section and PWM generation circuits were not damaged.