Yes. It does not seem to be heating and the turntable doesn't turn - but it sounds like it is running.
Interior light comes on. No display count down or otherwise. Also, none of the buttons work (i.e., clear/off or start/pause won't stop the unit).
Only opening the door stops the unit when it has one of these "phantom" starts.
Is this a repair (the part replacement) that can be done at home?