Galanz Partial Power / Relay or Wiring Fault

Microwave fan runs but there is no interior light and no turntable movement; unit may not heat.

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 lamp and turntable relays, Loose wiring harness to lamp and motor, Control board output failure, Internal harness connector not seated

Safety: Unplug before removing the cabinet.

Steps:

1. Confirm symptoms: Verify that the fan runs but both light and turntable are dead in all modes.
2. Inspect wiring: With the cabinet removed, trace the harness from the control board to the lamp and turntable motor. Ensure connectors are fully seated.
3. Check for shared relay: On some boards, a single relay powers multiple loads. If that relay fails, both lamp and turntable may be out. Replace the control board if the relay is defective.

Hard 4/5

Main Control Board

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