Boneco
No Power / Power Supply Failure
Humidifier does not power on at all (no lights, no 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, Failed external power adapter (for low-voltage models), Faulty power switch, Loose power cord connection at PCB
How to Fix / Troubleshooting
Safety: Unplug the unit before opening any covers. If you are not comfortable working with mains voltage, contact a technician.
Steps:
- Check outlet and cord: Test the wall outlet with another device. Inspect the power cord for cuts or kinks. Ensure any detachable adapter is firmly plugged in.
- External adapter models: For BONECO models using a low-voltage adapter, test the adapter output with a multimeter. If there is no output, replace the original BONECO power adapter.
- Internal fuse: On mains-powered models, remove the housing to access the main PCB. Look for a small glass or ceramic fuse near the power input. If visibly blown (broken filament or blackened), replace with the same type and rating.
- Check power switch and wiring: Verify that the power switch is mechanically sound and that its wires are firmly connected to the PCB.
- If fuse blows again immediately: There is likely a shorted component (e.g., varistor, rectifier, or transformer) on the main board. Do not keep replacing fuses—have the main control board inspected and replaced by a professional.
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Repair Difficulty
Hard
4/5
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