An archive of repair files for LG hardware. Shared as “LG-43LF570V-ZA -EAX66203805(1.3).rar” — a .rar file, 69.3 MB.
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 @tvsoftwareworld. 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.
7-ZipWinRARThe Unarchiver (macOS)