Denon AVR-1908

Hi everyone i have a denon Avr-1908. i was using it last night then this morning when i turned it on you hear all the clicks then it shuts off as if its in protect mode. did the microprocesser reset and still nothing. Has anyone experience this same problem if so what was the problem and how did you resolve it. thanks guys.

its actually disconnected from everything now. no speakers connected and no devices connected. I pluged it in with nothing connected to the receiver and still does the same thing. it turns on then after a few sec it turns right off