Microwave trips the household circuit breaker or RCD when starting a cooking cycle.
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 tripping indicates a potentially dangerous fault. Do not repeatedly reset the breaker and retry.
User checks:
- Inspect the power cord and plug for visible damage, burns, or cuts. If damaged, do not use the microwave.
- Try a different outlet on a known good circuit (if safe to do so). If the breaker still trips, the fault is in the microwave.
Do not open the cabinet. Internal shorts in HV components or wiring must be diagnosed with proper test equipment.
Contact a qualified technician to test the HV capacitor, magnetron, mains filter, and wiring. Until repaired, keep the microwave unplugged.
Repair Difficulty
Required Part
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