Blomberg Overheating or Component Burnout

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,Overheated turntable motor,Overheated wiring or connectors,Failing magnetron or transformer

How to Fix / Troubleshooting

Safety: Stop the microwave immediately, unplug it, and open windows for ventilation. Do not continue using the unit until the source is identified.

User checks:

  • 1. Inspect interior: Look for burnt food, splatters, or packaging that may be smoldering. Clean thoroughly.
  • 2. Smell location: Determine if the smell comes from inside the cavity, the rear, or the control panel area.

Advanced steps:

  • 3. Inspect components: With the cabinet removed, check wiring harnesses, the turntable motor, and high-voltage components for burn marks or melted insulation.
  • 4. Replace damaged parts: Any burned wiring, connectors, or components must be replaced before safe operation.
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Repair Difficulty

Hard 4/5

Required Part

Wiring Harness
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