J+ Booster
Display Backlight or LCD Failure
Charger display is blank or very dim, but the unit still charges the vehicle normally.
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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
Failed backlight LEDs on display PCB, Loose display ribbon cable, Faulty display power regulator on control PCB, Physical impact damaging the display module
How to Fix / Troubleshooting
Safety: Display issues alone are usually not an electrical hazard, but avoid opening the unit.
- Check viewing angle and brightness (if adjustable): Some models allow brightness settings; verify via app or buttons if available.
- Power-cycle: Disconnect from mains for a few minutes and reconnect.
- Use external indicators: If the charger has app connectivity or LED indicators, use those to monitor charging until the display is repaired.
- Professional replacement: The display/control PCB or its backlight circuit likely needs replacement.
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Repair Difficulty
Medium
3/5
Required Part
J+ Booster Display / Control PCB
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