Farberware
Reduced Output / Weak Magnetron
Microwave takes much longer than usual to heat food; performance is weak.
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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
Aging magnetron, low household voltage, failing high-voltage capacitor, partially shorted diode
How to Fix / Troubleshooting
User checks:
- Test with 1 cup of water at room temperature: run on HIGH for 2 minutes. The water should be very hot or boiling. If only lukewarm, output is low.
- Ensure you are not using oversized or very thick containers that absorb microwave energy.
- Confirm the microwave is set to 100% power and not a reduced power level.
If heating remains weak, the magnetron or high-voltage components are likely degrading. Internal high-voltage diagnosis and replacement should be done by a professional.
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Repair Difficulty
Professional Required
5/5
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