Microwave runs but does not heat food; timer counts down, light and turntable operate normally.
Safety Warning
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
How to Fix / Troubleshooting
Critical safety warning: The high-voltage system in Avanti microwaves is extremely dangerous. If you are not trained in microwave repair, do not attempt to service the magnetron, transformer, capacitor, or diode. Always unplug the unit and be aware that the capacitor can retain a lethal charge.
Basic user checks:
- 1. Verify load: Test with a microwave-safe cup of water. If the water does not warm after 1–2 minutes on HIGH, heating has failed.
- 2. Listen for abnormal noises: A loud humming, buzzing, or arcing sound can indicate a failing magnetron or HV component. Stop using the microwave immediately.
- 3. Professional repair: Internal diagnosis involves testing the magnetron, HV diode, capacitor, and transformer. This should be done only by a qualified technician using proper discharge procedures and test equipment.