Dimplex
No Power / Main Supply or PCB Failure
Dehumidifier will not power on 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 internal fuse on main PCB, Faulty power cord or plug, Failed main control PCB power supply section
How to Fix / Troubleshooting
Safety: Unplug the unit and verify the wall outlet with another appliance before assuming the dehumidifier is faulty.
Steps:
- Inspect the power cord for cuts, burns, or loose plug blades. Replace the cord set if damaged.
- Remove the control panel or rear cover to access the main control PCB. Locate the onboard fuse (usually a glass or ceramic fuse).
- Test the fuse with a multimeter. If open, replace it with the same type and rating. If it blows again immediately, there is a deeper fault (shorted component) that needs professional diagnosis.
- Check for burnt components or bulging capacitors on the PCB. If present, replace the entire main PCB with a Dimplex OEM board.
- Reassemble and test. If there is still no power, further diagnosis of the power supply circuitry is required by a qualified technician.
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Repair Difficulty
Hard
4/5
Required Part
Main Control PCB
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