Brand: GE
Model Number: JT3800SH7SS
Main Symptom: Microwave not heating
What happens & when: This is a combo wall oven microwave unit. Everything else works. All controls, the oven, the microwave turntable and light. The microwave hum sounds the same as far as I can tell. The microwave just will not heat.
Error Code (if any): none
Parts or tests already tried: none
Photos / video link: