MUSTART
Display Backlight / UI Power Fault
Charger display is on but very dim, flickering, or unreadable; charging may still work intermittently.
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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
Failing display backlight LEDs, unstable low‑voltage supply to display board, loose ribbon cable between display and main control board
How to Fix / Troubleshooting
Safety warning: Do not open the charger to access the display board; this exposes live parts.
- Power cycle: Disconnect power for 2 minutes, then restore and observe the display.
- Avoid moisture: Ensure the front panel is dry and not exposed to direct water spray.
- Use charger cautiously: If charging still functions but the display is unreadable, you may continue using it temporarily while arranging service, but monitor the EV and circuit closely.
- Service: A failing display or UI power circuit requires replacement of the display board or main control board.
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Repair Difficulty
Medium
3/5
Required Part
Display / User Interface Board
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