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No Power – Dead Appliance
Microwave does not start at all; display is blank and no lights or sounds when plugging in.
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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 internal fuse, Faulty mains power cord, Failed noise filter / mains input board, Defective control PCB power supply
How to Fix / Troubleshooting
Safety: Unplug the microwave before any inspection. Internal components are connected directly to mains voltage.
Steps:
- 1. Check outlet: Test the wall socket with another appliance to confirm power is present.
- 2. Inspect plug and cord: Look for visible damage, burns, or loose pins. If damaged, have the cord replaced by a professional.
- 3. Internal fuse (for competent DIYers): Remove the outer cover and locate the main fuse near the mains input. Test for continuity with a multimeter. Replace only with the exact same rating if blown.
- 4. If fuse blows again: Do not continue replacing fuses. A short in the HV circuit or control PCB must be diagnosed by a technician.
If you are not comfortable working with mains wiring, contact a qualified appliance repair service.
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Repair Difficulty
Hard
4/5
Required Part
Main Ceramic Fuse
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