Café High-Voltage Not Energizing

Microwave fan and light come on, but the turntable does not move and there is no heating; no error code.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Failed high-voltage relay on control board, Open thermal cutout, Faulty door switch in HV circuit, Defective main control board

Safety first: Internal high-voltage circuits are dangerous; do not open the cabinet.

User-level checks:

Confirm symptoms: Test with a cup of water. If after 1–2 minutes the water is still cold and the turntable does not move, but fan and light run, the HV circuit may not be engaging.
Check door closure: Ensure the door is fully closed and latching properly.
Service: A technician should test the door switches, thermal cutouts, and control board relays, and repair or replace the faulty component.

Professional Required 5/5

Main Control Board

Check Price on Amazon

We may earn a commission from links on this page.