Haier
No power / primary power circuit failure
Microwave will not start at all (no lights, no display)
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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 line fuse, Faulty power cord, Tripped household breaker, Failed noise filter board
How to Fix / Troubleshooting
Safety: Unplug the microwave before removing any covers. Internal components can be hazardous.
- Check outlet and breaker: Test the outlet with another appliance. Reset any tripped breaker or replace a blown household fuse.
- Inspect power cord: Look for visible damage to the cord or plug. Do not use the microwave if the cord is damaged.
- Internal fuse (advanced): With the cover removed (unplugged), locate the line fuse near the power cord entry or noise filter board. If blown, investigate for underlying faults (shorted components) before replacing.
- Replace fuse with identical rating: If you replace the fuse and it blows again immediately, stop and call a technician; there is a deeper electrical fault.
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Repair Difficulty
Hard
4/5
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