GE Short Circuit or Overcurrent Condition

Microwave trips the circuit breaker or blows a fuse when starting or shortly after starting.

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

Shorted high-voltage capacitor or diode, Shorted magnetron, Shorted line filter or power cord, Faulty door switch causing line-to-neutral short

Safety: Do not repeatedly reset the breaker and restart the microwave. Unplug the unit.

Check circuit: Ensure the microwave is on a dedicated circuit of appropriate amperage (typically 15–20A).
Inspect cord and outlet: Look for visible damage or signs of arcing at the outlet.
Internal faults: High-voltage component shorts require specialized testing. A technician should test the capacitor, diode, magnetron, and door switches and replace any defective parts.

Professional Required 5/5

High-Voltage Capacitor

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