Microwave runs but does not heat food; turntable, light, and fan operate normally, but food remains cold.
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 section contains lethal voltages and a capacitor that can store charge. Only qualified technicians should service these components.
User-level checks:
- 1. Confirm no heating: Heat a cup of water for 1–2 minutes. If the water is still cold, heating is not occurring.
- 2. Listen and observe: Note if there is an unusual loud hum, burning smell, or arcing sounds. If so, stop using the microwave immediately.
- 3. Basic inspection: Unplug the unit and remove the outer cabinet only if you are comfortable doing so. Visually inspect for burnt wiring or components near the magnetron and transformer without touching them.
If no obvious external issue (like door not closing) is found, the magnetron or other high-voltage parts likely need replacement by a professional.