Tristar Worn Fan Motor Bearings

Microwave emits a high-pitched squeal or chirp from the fan area during operation.

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.

Possible Causes

Dry or worn fan motor bearings, Bent fan blade rubbing housing, Debris caught in fan

Safety: Unplug the microwave before accessing the fan.

Steps to fix squealing fan:

1. Access fan: Remove the outer cabinet and locate the cooling fan.
2. Inspect blades: Check for contact between the blades and housing. Gently straighten bent blades.
3. Remove debris: Clear any dust or foreign objects from the fan area.
4. Replace motor: If the squeal persists and the motor shaft has play or feels rough when turned by hand, replace the fan motor.

Medium 3/5

Cooling Fan Motor

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