RAR archive of 3.09 MB for the LG 32LN5120 LED TV. The file name identifies only the model, with no chassis or board code, so extract it to see whether it holds a firmware dump or service documentation. A schematic would serve for following the standby and main supply rails and checking the panel power switching. A flash image would be programmed into the board memory with an external programmer after a backup of the original. Check the main board label against the contents first.
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 @hashmielecom. 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.