Balay
Cooling Fan Failure
Microwave runs but the cooling fan does not operate; exterior surfaces become very hot.
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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
Failed cooling fan motor,Obstructed fan blades,Loose or broken fan wiring,Faulty fan relay on control PCB
How to Fix / Troubleshooting
Safety: Stop using the microwave immediately and unplug it; overheating can damage internal components.
Technician-level only:
- Access the cooling fan motor and check for free rotation of the fan blades.
- Test the motor for continuity and supply voltage during operation.
- Clear any obstructions and replace the motor if it does not run when powered.
- Check the fan relay and control signals on the PCB if the motor is good but not receiving power.
Because this involves internal high-voltage areas, only a qualified technician should perform these checks.
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Repair Difficulty
Professional Required
5/5
Required Part
Cooling Fan Motor
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