Bomann
Fan or Turntable Motor Bearing Wear
Microwave emits a high-pitched squeal or chirping noise 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
Worn cooling fan motor bearings, Worn turntable motor, Foreign object contacting fan blades, Dry or misaligned stirrer fan (if equipped)
How to Fix / Troubleshooting
Safety: Unplug the microwave before removing the cabinet or bottom cover.
- Step 1 – Isolate source: Listen carefully to determine if the noise comes from the bottom (turntable motor) or rear/top (cooling or convection fan).
- Step 2 – Inspect fans: Remove the cabinet and check that fan blades are not rubbing against shrouds or wires. Remove any debris.
- Step 3 – Test motors: If the noise persists and is clearly from a motor, replace the noisy motor (cooling fan, convection fan, or turntable motor) as lubrication is usually not a permanent fix.
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Repair Difficulty
Medium
3/5
Required Part
Cooling Fan Motor
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