Russell Hobbs
No Power – Input Power or Main Fuse Failure
Microwave will not power on at all – no display, no lights
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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 mains fuse,Faulty mains power cord,Failed noise filter board,Burnt track on control PCB
How to Fix / Troubleshooting
Safety first: Unplug the microwave before any inspection. Internal fuses are not user-serviceable in some regions; check local regulations.
- 1. Check wall outlet: Test the socket with another appliance to confirm power is present.
- 2. Inspect plug and cable: Look for cuts, kinks, or burn marks. If damaged, have the cord replaced by a qualified person.
- 3. Internal fuse check (advanced): With the unit unplugged, remove the outer cover. Locate the internal mains fuse near the power entry. If blown (filament broken or glass blackened), replace only with the same rating and type after identifying the cause.
- 4. Inspect noise filter board: Check for burnt components or cracked solder joints on the input filter PCB. Replace if damaged.
- 5. If the new fuse blows immediately: There is likely a short in the HV system or control board. Stop and seek professional service.
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Repair Difficulty
Hard
4/5
Required Part
Internal Mains Fuse
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