BWT Perla No Power / Power Supply Failure

BWT Perla is completely dead: 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 mains fuse, Faulty external power adapter or transformer, Loose power plug, Defective power supply section on main PCB

How to Fix / Troubleshooting

Safety first: Work only on de-energized circuits. If you are not qualified, contact an electrician or service technician.

  • Check outlet: Plug another device into the same outlet to confirm it has power.
  • Inspect power cord and adapter: Ensure the BWT Perla power plug is fully inserted and the cable is not damaged. If an external adapter is used, check its output with a multimeter if possible.
  • Check internal fuse: Some models have an internal fuse on the main PCB. With power disconnected, remove the cover and visually inspect the fuse. Replace only with the same type and rating if blown.
  • PCB inspection: Look for burn marks or swollen components in the power supply area of the PCB. If present, the board must be replaced.
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Repair Difficulty

Hard 4/5

Required Part

Power Supply / Main Control PCB
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