After some hours of being powered off from the main power switch in the back it did actually come to life for a short time. Soon after the audio became intermittant and then the front power led itself became intermittant and then it shutdown again.

The one big clue is that when using the menu to reset the config I noticed a 60 cycle hum in the video. My guess is that a capacitor (or more than one) in the power supply is dying and is the cause for the problems.

Chris