BougeRV Backlight Power Instability

Charger display is dim or backlight flickers while charging.

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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

Weak display backlight driver on UI board, Voltage drop in low-voltage supply from main board, Loose low-voltage connector, Overloaded auxiliary power supply

How to Fix / Troubleshooting

Note: A dim display alone may not affect charging but indicates a developing power issue.

  • Step 1 – Check for heat: Feel the charger housing. Excessive heat may indicate the auxiliary power supply is overloaded.
  • Step 2 – Inspect low-voltage wiring: With power off, open the charger and reseat the low-voltage connectors between the main board and UI board.
  • Step 3 – Measure low-voltage rails (advanced): A technician can measure 5 V/12 V rails under load to see if they sag during charging.
  • Step 4 – Replace suspect module: If low-voltage rails are unstable, replace the BougeRV auxiliary power supply module. If rails are stable but the display remains dim, replace the display / UI board.
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Repair Difficulty

Medium 3/5

Required Part

BougeRV Auxiliary Power Supply Module
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