The original remote doesn't work with the new board. 3. How to Update/Install Firmware Updating this board is usually done via USB :
The is a 3-in-1 universal LCD/LED TV mainboard that integrates the power supply, LED driver, and TV control board into a single PCB. It is primarily used for repairing or upgrading 15 to 32-inch flat-screen TV panels. Technical Overview tp.rd8503.pa671 software
This board is designed to replace aging or damaged motherboards, solving common faults like black screens, system lag, and signal interruptions. It supports various high-definition resolutions and is compatible with multiple TV standards. Typically 15 to 32 inches. The original remote doesn't work with the new board