Microwave not heating

• · Magnetron failure
• · Door switch
• · Diode/capacitor
• · Turntable motor

1. Unplug the appliance for 5 minutes to reset control electronics.
2. Check power supply, circuit breaker, and any GFCI outlet.
3. Inspect for visible leaks, blockages, or burnt smells before opening panels.
4. Consult the user manual for diagnostic mode / error codes.

If the cause involves the sealed refrigeration system, control board, or any high-voltage component, hire a licensed appliance technician. For appliances over 6 years old, weigh repair against replacement using our decision calculator.