What needs to be inspected after the LCD passes the BIST but has a video issue?

When the LCD passes the Built-In Self-Test (BIST) but still exhibits video issues, it indicates that the display hardware is functioning at a basic level but may still have underlying problems that affect its ability to render video correctly. In this context, inspecting the system board and inverter board is critical.

The system board is responsible for processing data and sending the appropriate signals to the display. If there are malfunctions in the system board, such as damaged components or poor connections, video output could be compromised, leading to issues like flickering, absent images, or distorted visuals.

The inverter board, on the other hand, is crucial for providing power to the LCD backlight. If the inverter board fails, it might lead to issues such as dim or non-visible images, despite the LCD's potential to work correctly as indicated by the BIST. A thorough inspection of both the system board and inverter board can help identify any faults or loose connections that might be responsible for the video issues observed.

Inspecting operating system configurations and BIOS settings may be relevant when troubleshooting software-related video problems, but since the issue persists after hardware testing (BIST), these options are less likely to yield solutions. Similarly, fan connectors are not directly related to the functionality of