Small RAR archive related to the TP.VST59S.PB813 TV mainboard, a universal LCD TV controller board. The name adds HDR, SAM and USB SV; SAM probably refers to a Samsung panel and the USB part to a USB update file, but the meaning is not confirmed. Firmware for these boards is usually loaded from a USB stick or written straight to the SPI flash. Make sure the panel resolution and settings suit your screen, and back up the existing flash before writing, since a wrong panel configuration gives a blank or scrambled picture.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @led_software. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.