This is often a corrupted SPI Flash memory. Refer to the schematic to locate the 8-pin Flash IC (usually a 25Q32) and try re-flashing it.
This is the connection point to your screen. The schematic details the pinout for the 30-pin or 40-pin LVDS header. t.vst59.031 schematic diagram
Check the LVDS mapping in the service menu or verify the LVDS cable wiring against the schematic pinout. Conclusion This is often a corrupted SPI Flash memory
To access the "factory settings" (to flip the screen or adjust colors), press Input + 2580 on the remote. Troubleshooting Tips t.vst59.031 schematic diagram