Proline
High Voltage Component Failure After Surge
Microwave emits a loud pop and then stops heating, though lights and turntable may still work.
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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
High-voltage capacitor failure, HV diode short or open, Magnetron internal arcing, Power surge damage
How to Fix / Troubleshooting
Immediate action: Stop the microwave, unplug it, and do not attempt to restart.
User-level checks:
- After cooling, test with a cup of water for 1 minute. If there is no heating, the HV system has failed.
Next steps:
- A technician must test and replace the HV capacitor, HV diode, or magnetron as needed.
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Repair Difficulty
Professional Required
5/5
Required Part
High-Voltage Diode
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