GE No Power – Line Fuse or Thermal Cutout Open

Microwave completely dead – no display, no lights, no beeps, and no response to any buttons.

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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

Blown line fuse on power input, Open cavity thermal cutout or thermostat, Failed door switch causing fuse to blow, Faulty power cord or loose internal connections

How to Fix / Troubleshooting

Warning: Unplug the microwave before any inspection. Internal components can be hazardous.

  • Check outlet: Verify the wall outlet has power by plugging in another appliance. Check the circuit breaker or GFCI.
  • Inspect power cord: Look for visible damage to the GE microwave's cord. If damaged, do not use the unit.
  • Internal fuse (advanced): Accessing and replacing the internal line fuse or thermal cutout requires removing the outer cover and should be done by a technician. Never bypass a fuse or thermal device.
  • Door switch check: A shorted door switch can blow the fuse. A technician should test and replace any defective switches before installing a new fuse.
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Repair Difficulty

Professional Required 5/5

Required Part

Line Fuse
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