OBH Nordica
No Power / Primary Power Circuit Failure
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 line fuse, Faulty power cord, Defective noise filter board, Failed main control PCB power supply
How to Fix / Troubleshooting
Safety first: Unplug the microwave before any inspection. Internal components can still be hazardous.
- Step 1 – Check outlet: Test the wall outlet with another appliance to confirm it has power. Reset any tripped breakers or GFCI outlets.
- Step 2 – Inspect power cord: Examine the OBH Nordica microwave's power cord for cuts, burns, or kinks. If damaged, the cord must be replaced by a qualified technician.
- Step 3 – Internal fuse check: Remove the outer cover and locate the main line fuse (usually near where the power cord enters, often on a small noise filter board). If the glass fuse appears blackened or broken, it has blown.
- Step 4 – Determine cause: A blown fuse often indicates another fault (shorted high-voltage components, door switch issues). Simply replacing the fuse without finding the cause can be dangerous.
- Step 5 – Professional service: Have a technician test the noise filter board, door switches, and high-voltage components before replacing the fuse with the exact same rating specified by OBH Nordica.
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Repair Difficulty
Hard
4/5
Required Part
Main Line Fuse / Noise Filter Board
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