Microwave runs (light on, turntable rotating, fan running) but food does not heat up.
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: Do not attempt to service the high-voltage section unless you are a qualified technician. The voltages involved are lethal.
User-level checks:
- 1. Confirm symptom: Place a microwave-safe cup of water in the oven and run on full power for 1–2 minutes. If the water remains cold, heating is not occurring.
- 2. Listen for abnormal sounds: A loud buzzing, humming, or arcing noise can indicate a failing transformer, capacitor, or magnetron.
- 3. Smell for burning: A strong electrical or burning smell suggests internal component failure. Unplug immediately.
- 4. Check power level setting: Ensure the power level is not set to a very low setting (e.g., 10–20%) which can mimic no-heat for short tests.
Next steps: If basic checks confirm no heating, contact a Morphy Richards service center. The technician will test and replace the magnetron, HV capacitor, diode, or transformer as needed.