Microwave trips the household circuit breaker or blows a fuse when starting.
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.
Possible Causes
How to Fix / Troubleshooting
Safety: Repeated breaker tripping indicates a serious fault. Unplug the microwave and do not reset the breaker repeatedly.
Basic checks:
- Try a different outlet on a dedicated circuit to rule out wiring issues (if safe and convenient).
- If the breaker trips immediately upon pressing START, internal components are likely shorted.
Diagnosis of shorts in the HV circuit must be done by a qualified technician. Do not open the cabinet or attempt to replace HV parts yourself.
Repair Difficulty
Required Part
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