My microwaves turn table quit working a couple months ago, everything working fine other than that. While is use yesterday it suddenly shut off, no power at all with no lights/clock on the control panel. I checked my circuit breakers and there is power to the unit. Not sure where to start or just buy a new unit.
Based on the description it sounds like the turntable motor would need to be replaced for the turntable not working. For the unit not powering on, you will want to check the thermal fuses that are in the unit to ensure that they have continuity. If not then they are bad and would need to be replaced.