Princess
No Microwave Output / Magnetron Not Energizing
Microwave runs (light on, turntable spinning, fan running) but food does not heat up at all.
Advertisements
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.
Advertisements
Possible Causes
Failed magnetron, Open high-voltage diode, Open high-voltage capacitor, Faulty high-voltage transformer or inverter module
How to Fix / Troubleshooting
Safety warning: Internal microwave components operate at lethal voltages. Do not remove the cover or attempt internal repairs unless you are a trained technician.
- Confirm symptom: Place a microwave-safe cup of water inside and run on full power for 1–2 minutes. If the water remains cold, there is no microwave output.
- Check power level settings: Ensure the power level is set to 100% and not to a low setting or defrost mode.
- Reset: Unplug for 5–10 minutes, then plug back in and test again.
- Professional repair: If still no heat, a technician should test and replace the magnetron, diode, capacitor, or transformer with Princess-compatible parts.
Advertisements
Repair Difficulty
Professional Required
5/5
Advertisements