Bauknecht
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 on cavity surfaces, Overheating high-voltage components, Failing motor or fan, Arcing at connectors
How to Fix / Troubleshooting
Safety first: If you smell burning plastic or insulation, stop the microwave immediately and unplug it.
- Step 1 – Inspect interior: Look for burnt food, splatters, or melted plastic containers. Clean thoroughly.
- Step 2 – Check accessories: Ensure only microwave-safe containers are used.
- Step 3 – Short test: After cleaning and cooling, run the microwave with a cup of water for 30–60 seconds. If the burning smell returns, unplug and discontinue use.
- Step 4 – Professional inspection: A technician should inspect the fan motors, wiring harness, high-voltage components, and connectors for overheating or damage.
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Repair Difficulty
Hard
4/5
Required Part
Wiring Harness
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