Bought the Denon X4000 as a refurbished unit & it's been going into protection mode lately. Took it to an authorized service shop last week & they ran it many hours & found nothing. After watching only a little TV on normal volume last week, it did it again. The unit was barely warm to the touch on top. I unplugged each speaker one by one hoping to find a bad one. Got through them all & nothing. Every time I powered the Denon up, it would shut itself back down. Tried it after every single speaker wire was unplugged. Unplugged all HDMI & then RCA cables (for external amp) too. Still powered down when turned on (light blinks red off & on). Then I unplugged the Denon from the power strip & plugged it into a different wall outlet & it came on again. About 10 minutes later I plugged it back into the power strip it was in & it worked there too. Any ideas here?
2 things come to my mind. Bad power strip (although it is a good one & appears to be working OK) or possibly even a bad AC power cord for the Denon? Is there certain specs on these power cords someone can give me to make sure I was sent the right one? It looks the same as the one for my PCs. Does that sound right? Appreciate any help here.