I've a Harman Kardon AVR 2000 and since a few month it switch off by itself afer 3s, no error message display.
I didn't change my speakers, well nothing changed.
When I open the unit and disconect the AC power card, and then plug it again, I can use the AVR for 2 minutes before it failed again...
I've replaced the OEG SDT-S-112DMR, but didn't change anything.
Can you help me ?