Siemens No Power / Main Supply Fault

Washer will not start at all; 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 household fuse or tripped breaker, Faulty power cord, Defective mains filter (interference suppressor), Failed main control board power supply

How to Fix / Troubleshooting

Safety first: Do not open live electrical panels. Unplug the washer before internal checks.

Steps to restore power:

  • Check outlet and breaker: Test the wall socket with another appliance. Reset any tripped breakers or replace blown fuses as needed.
  • Inspect power cord: Look for cuts, burns, or kinks. If damaged, replace the cord assembly.
  • Check mains filter: With the top or rear panel removed (power unplugged), locate the mains filter module where the cord enters. Inspect for burns or bulging components. Replace if visibly damaged.

When to call a technician: If the outlet and cord are good but the machine remains dead, the control board power supply likely needs professional repair or replacement.

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Repair Difficulty

Hard 4/5

Required Part

Mains Interference Filter
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