Installing the wrong firmware can "brick" your board. Always verify your panel resolution before proceeding. Preparation
Allows for easy firmware installation via a flash drive. How to Install the Firmware Download R85 A81 1920X1080 rar
Controls video processing, audio, and panel interface (LVDS) Key Features Installing the wrong firmware can "brick" your board
Ensure the firmware resolution matches your panel. Flashing a 1920x1080 file to a 1366x768 panel will cause display errors. How to Install the Firmware Controls video processing,
Can be programmed for different screen sizes and resolutions (1366x768, 1920x1080, etc.).
If you are looking for specific hardware replacements, you can find the T.R85.A81 board on sites like AliExpress . T.R85.A81 USB Firmware Software Bios Bin - Lab-One Forum
Turn on the power. The indicator light (keypad LED) should start flashing. during this process. Wait until the flashing stops or the light stays solid. Remove the USB drive and restart the TV.