GE Advantium not heating

Microwave Repair
1

Please make sure to click on General above and select the correct appliance type first.

Brand:GE
Model Number:PSB9120EF3ES
Main Symptom:Microwave does not heat
What happens & when:Fan does run as it should. Turntable rotates as it should

Error Code (if any):
Parts or tests already tried:
Photos / video link:

2

This could be the relay control board AP6890583, the monitor switch AP6037282, or any of the high voltage components.

You can check the monitor switch for continuity when open and closed, but I don’t have the exact wiring information for the control board or HV components. With the potential for 4000 volts I don’t recommend guessing when it comes to making checks at the HV components.

https://www.appliancepartspros.com/ge-switch-monitor-interlock-wb24x25397-ap6037282.html

https://www.appliancepartspros.com/ge-relay-board-wb27x32849-ap6890583.html