Typically 15V to 17V . Power for the source driver's analog circuits.
Approximately 5V to 7V . Reference voltage for the liquid crystal common electrode. Common Troubleshooting Steps
You can find original replacement boards at retailers like Great Bharat Spares to ensure compatibility and original display quality.
Start by testing the SMD fuse near the LVDS connector for continuity. If blown, check for shorts in the ceramic capacitors (MLCC).