Re: diplomat ADp8242
PCB runs everything… Easy check is to make sure that the door latch mechanism is working properly – if it or it’s microswitch is jammed in the closed position it won’t light up or programme.
Entirely possible that the pcb has died as these machines are notoriously prone to corruption issues – article to be found HERE. That being the case, you’ll be looking at £120-130 for a pcb plus whatever caused the issue in the first place.
Regards,
Penguin45.