SilverCrest Electrical Short / Ground Fault

Microwave trips the household circuit breaker or RCD when starting a cook 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, Shorted high-voltage diode, Faulty line filter board, Damaged power cord causing short to chassis

How to Fix / Troubleshooting

SAFETY: Repeated tripping indicates a potentially dangerous fault. Unplug the microwave and do not continue resetting the breaker.

  • Step 1 – External check:
    • Try a different outlet on a separate circuit to rule out a weak breaker (if safe and permitted).
  • Step 2 – Visual inspection (for DIYers):
    • Remove the outer cabinet.
    • Inspect the power cord entry, line filter board, and wiring for burn marks or melted insulation.

Internal shorts in the high-voltage system must be diagnosed and repaired by a qualified technician. Do not operate the SilverCrest microwave until the fault is corrected.

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Repair Difficulty

Professional Required 5/5

Required Part

High-Voltage Capacitor
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