Hi T.Yazar

I have seen this problem exactly as you described.

In my case it was caused by a broken ceramic capacitor in the micro and ibus heartbeat line. The break meant the capacitor was open circuit.

The heartbeat circuit keeps the unit powered so long as the ibus is sending messages. Pressing the eject button artificially injects an "ibus awake" signal and makes the unit work for so long as the eject button is kept pressed.

You have to check all ceramic capacitors near to the rear connectors on the top and bottom circuit board sides.

Also check for water ingress.

Good luck.