Oster
Cooling fan or cabinet vibration issue
Microwave runs but is very noisy, with a loud fan or vibration sound.
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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, Loose fan blade, Loose cabinet screws or panels, Debris in fan housing
How to Fix / Troubleshooting
Safety first: Unplug the microwave before tightening screws or accessing internal fans.
- Check placement: Ensure the microwave is on a stable, level surface and not touching walls or cabinets that can resonate.
- Tighten screws: Tighten any loose exterior screws on the cabinet and mounting brackets.
- Inspect fan (advanced): Remove the cabinet and check the cooling fan for debris or a loose blade. Clean and secure as needed.
- Replace noisy fan: If the fan motor bearings are noisy, replace the cooling fan motor with an Oster-compatible part.
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Repair Difficulty
Medium
3/5
Required Part
Cooling Fan Motor
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