Microwave emits a burning smell, plastic smell, or smoke during operation.
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
Safety First: Stop the microwave immediately, unplug it, and open windows for ventilation. If you see flames, use a fire extinguisher rated for electrical fires; do not open the door until flames are out.
Steps:
- Inspect cavity: After cooling, inspect for burnt food, splatters, or packaging. Clean thoroughly with mild detergent.
- Check accessories: Ensure no non-microwave-safe plastics or containers are being used.
- Internal smell: If the smell seems electrical (sharp, acrid) and persists with an empty, clean cavity, internal components like the Frigidaire magnetron, wiring, or control board may be overheating.
Recommendation: Do not continue using the microwave. Have a technician open the unit, inspect wiring, fan, and high-voltage components, and replace any burnt parts.