Schulthess
No power / supply fault
Washer does not power on; no lights or 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 mains fuse or tripped breaker, Faulty power cord, Defective mains filter (EMI filter), Faulty main control board power supply
How to Fix / Troubleshooting
Safety first: Ensure your hands are dry when working with electrical connections. Unplug the washer before opening any panels.
- Step 1 – Check outlet: Test the wall socket with another appliance to confirm power is available.
- Step 2 – Inspect power cord: Look for cuts, kinks, or burn marks. Replace the cord if damaged.
- Step 3 – Check mains filter: Remove the rear or top panel to locate the mains filter where the cord enters the machine. Inspect for burnt components. If the filter is damaged or open circuit, replace it.
- Step 4 – Control board: If power reaches the PCB but the display remains dead, the board's low-voltage power supply may have failed and the PCB will need replacement.
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Repair Difficulty
Hard
4/5
Required Part
Mains Filter (EMI Filter)
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