Hi XXXXXXX,
Sounds more like it's in protection mode and shutting itself down for to try to protect the system.
Double check all your speaker connections and cabling for any loose wires that may be touching the casing.
If everything is ok then you could try a processor reset which involves holding down the AUTO and PCM buttons down on the front panel whilst turning the power on. Hold them for a few seconds and the display will flash. Let them go and you'll have reset everthing to the factory defaults.
I want to ensure you understand this will reset everything back to the factory settings so you'll have to re-input all your speaker distances, channel levels etc
Network Administrator
Network Administrator for large company, Microsoft certified system builder
Hmm, ok i had received this information from their site as far as technical support. At this point if all wires are not loose i would recommend contacting the manufacturers technical support as they would have more resources available to them to troubleshoot this. There contact information is
Denon offers in-house factory Technical Support
Phone Hours of Operation: 9:00AM to 5:00PM ET, M-F(XXX) XXX-XXXX
I am sorry i was not able to assist you furthur with this.