Hi Rick,
Thank you for updating this review thread. It has been a while and it looks like we were all left hanging as to the final outcome of the failure. The the Amp module fail or did the power supply fail or was there an error in his testing procedure that caused premature failure?
Would you be so kind as to summarize where this test stands please?
Trying to determine root cause stalled after the owner did not return the power supply. So even if the OP fell ill, seems as though the owner could still return the SMPS for diagnosis. Since the OP was able to resume testing after the SMPS was replaced, appears the rest of the amp was fine.
As the owner has not resurfaced either, we are hopeful he still has a functioning amp.