Bauknecht
Electrical Short or Ground Fault
Microwave trips the household circuit breaker or RCD when starting a cooking cycle.
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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
Shorted high-voltage capacitor or diode, Faulty line filter, Damaged power cord, Moisture inside electrical components
How to Fix / Troubleshooting
Safety first: Repeated tripping indicates a potentially dangerous fault. Do not keep resetting the breaker and retrying.
- Step 1 – Isolate the issue: Plug the microwave into a different circuit (if safe and allowed) to confirm it is the appliance causing the trip.
- Step 2 – Visual cord check: Inspect the power cord for cuts or burns. Do not use the unit if damaged.
- Step 3 – Professional service: A technician should test the line filter, HV capacitor, diode, and internal wiring for shorts or ground faults and replace the defective part.
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Repair Difficulty
Professional Required
5/5
Required Part
High-Voltage Capacitor
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