Just today, the turntable won't stop turning when the door is closed.

broken or misaligned door interlock switch is most likely

Turntable turning and light on sounds like door not closing properly or door switch problems, but that should not make panel black when door not closing right. How about the hooks sticking out of the door. are they both there and do yours move like they have a spring on them?? That has to go into the unit and push the door switches. Or may have a broken door switch

Bad Door switch, back feeding power to turn table motor circuit

Check to door switches to make sure they are all opening and closing their contacts when they are supposed to. Some are probably double-throw, so make sure they are making a good contact in both positions. Also look for bad connections on the switches. Most of the switches carry significant current, so the connectors tend to burn.

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Check three door sensors, especially for two closed state switches.

this is normal thats the way they heat from in to out
now if you open the door the light is on
if it does not just change the bulb 10w 120 vac e14

The door switch is adjustable. one or more need adjusting to solve the problem

Replace defective microswitch.

Top or bottom door switch or mount.

The service manual is here.

You can order parts from Encompass here.

Sounds like a door switch problem or stuck relay contacts on the control PCB. Do the light and fan run too or just the T/T??