Morphy Richards Short Circuit Under Load

Microwave trips the household circuit breaker or blows the fuse when START is pressed.

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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, Shorted high-voltage diode, Shorted magnetron, Internal wiring short to chassis

How to Fix / Troubleshooting

Critical safety warning: Repeatedly resetting a tripping breaker can be dangerous. Unplug the microwave and do not attempt further use until inspected.

User actions:

  • 1. Confirm pattern: If the breaker trips only when START is pressed (not when plugging in), the fault is likely in the high-voltage or heater circuits.
  • 2. Do not open the unit unless qualified: High-voltage components can be lethal. Contact a Morphy Richards service center.

A technician will test the HV capacitor, diode, magnetron, and wiring for shorts and replace the defective component.

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Repair Difficulty

Professional Required 5/5

Required Part

High Voltage Capacitor
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