Panasonic
Overheating or Electrical Insulation Breakdown
Microwave emits a strong burning or electrical smell during or after operation.
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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.
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Possible Causes
Food or grease burning inside cavity, Failing magnetron, Overheating wiring or connectors on inverter board, Arcing at waveguide cover
How to Fix / Troubleshooting
Safety Warning: If you smell burning plastic or insulation, stop the microwave immediately and unplug it.
User checks:
- Inspect interior: Look for burnt food, splatters, or melted plastic containers. Clean thoroughly.
- Waveguide cover: Check for burn marks or holes on the waveguide cover; if damaged, do not use the microwave.
- Test briefly: After cleaning and cooling, run the microwave with a cup of water for 30 seconds. If the smell returns, stop using it.
If odor persists without visible food burning: Internal components may be overheating or failing. Have the unit inspected by a professional technician.
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Repair Difficulty
Hard
4/5
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