Originally Posted by newfmp3
So I think I'm loosing my X4000 after 12 months of use. It's shutting down, flashing red light. Its just random. Sometimes after being on 10mins, sometimes, after hours of use. Heat is not an issue. After checking all cables, banana plugs, I don't see anything but some of these are in wall. It even happens when ear phones are plugged in. Amp is never used above 45 volume - small room.
This is sort of a known issue (strangely seemingly only affects the X4000, not sure why nobody has reported it with any other models). The symptoms are random shut-down with seemingly no cause (receiver isn't hot, etc) and fast blinky light. It should just start on back up if you push the power button, as though nothing bad happened.
I had a little bout of this with my X4000 -- I even left it on overnight, sitting out in the open, with nothing plugged in, to rule out any heat or speaker wiring issues, and when I woke up in the morning it was shut down with fast blinky light around the power button. What I did was do multiple "deep resets" in a row -- like 4 or 5 in a row. Letting it flash and blink for a few seconds after each reset to make sure it "took". After that, the problem didn't re-manifest. If it does continue to do it after the reset, I would contact Denon for warranty service.
Here's the procedure for the "deep reset" as documented by JD:
1 - Turn off the power using ON/STANDBY.
2 - Simultaneously press/hold the UP/DOWN arrow buttons on the front panel and then press the ON/STANDBY button on the front panel.
3 - Once the display starts flashing at intervals of about 1 second, release the two buttons (but hold for at least 4-5 seconds).
** If in step 3 the display does not flash at intervals of about 1 second, start over from step 1.