- No heat (magnetron, diode, capacitor)
- Sparking/arcing inside the cavity
- Keypad or touch panel not responding
- Turntable won’t spin / tray wobbling
- Loud humming or buzzing from the transformer or fan
- Door switch failure – starts/stops when closing the door
- Light or vent fan not working on over-the-range models
- Error codes or shuts off mid-cycle
Safety note: If you see sparks, smell burning, or the door is damaged,
unplug the microwave and contact us. Microwaves contain high-voltage components—repairs should be handled by a professional.