De Dietrich
Main Power Supply / On-Off Circuit Failure
Washer-dryer will not power on; no lights or display, but mains outlet is known to be live
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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 on control board, Faulty mains filter (EMI filter), Defective on/off switch or power button, Loose mains cable connection inside machine
How to Fix / Troubleshooting
Safety: Unplug the appliance before opening any covers. Mains components can retain charge.
- 1. Verify outlet and plug: Test the wall socket with another appliance. Inspect the washer-dryer plug and cable for visible damage.
- 2. Access mains filter: Remove the rear or top panel to locate the mains interference filter where the power cord enters. Check for burnt smell or bulging. Replace if damaged.
- 3. Check internal fuse: Many De Dietrich control boards have a soldered or clip-in fuse. Only a qualified person should test and replace this, using the exact same rating.
- 4. On/off switch: If a mechanical power switch is fitted, test it for continuity when pressed. Replace if faulty.
Warning: Work on live mains circuits is hazardous. If you are not trained, contact a professional technician.
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Repair Difficulty
Professional Required
5/5
Required Part
Mains Interference Filter
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