BYD Display Backlight / HMI Power Issue

Charger display is very dim, flickering, or unreadable, but charging still works.

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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

Aging or failing LCD/LED backlight, Loose display ribbon cable, Low-voltage supply instability to HMI board, Moisture damage to front panel

How to Fix / Troubleshooting

Safety first: Turn off power at the breaker before removing the front cover.

  • Check in low light: Verify if the display is actually off or just the backlight is dim by viewing in a dark room.
  • Power-cycle: Turn off the charger for a few minutes, then restore power to see if the display stabilizes.
  • Professional inspection: A technician can reseat the display ribbon cable and measure the HMI supply voltage.
  • Protect from moisture: If condensation is present, improve weather protection and allow the unit to dry.
  • Replace display module: If the backlight is failing, replace the HMI/display PCB.
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Repair Difficulty

Medium 3/5

Required Part

HMI / Display PCB
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