>>My old POS standby AVR is won't work either.

This is a big screaming red flag for me. It's really unlikely that two receivers would fail at the same time. Any chance the outlet is dead, ie can you try the receiver in a different, known good outlet ?

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8