Oster
Overheating or component burning
Microwave emits a burning smell or smoke during 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 residue burning on cavity surfaces, Failing high-voltage component, Overheated wiring or connectors, Foreign object on or near heater (convection models)
How to Fix / Troubleshooting
Safety first: Stop the microwave immediately, open the door, and unplug the unit. If smoke is heavy, ventilate the area.
- Check for burnt food: Inspect the interior for spilled food or packaging that may be burning. Clean thoroughly.
- Smell source: If the smell is electrical (sharp, chemical), do not use the microwave again until inspected.
- Visual inspection: With the cabinet removed (if you are comfortable and the unit is unplugged), look for burned wiring or components. Do not touch high-voltage parts.
- Professional repair: Any sign of burned wiring, components, or insulation requires technician service and replacement of affected parts.
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Repair Difficulty
Professional Required
5/5
Required Part
Wiring Harness
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