TCL L32M90 television files in a small 2.09 MB RAR archive. The name identifies just the brand and the 32-inch class model, leaving the contents unspecified, so open it to see whether it holds a circuit diagram, service notes or a memory dump. Material of this kind assists with fault-finding on the power stage, inverter or backlight and on the main processing board. Any firmware image should be written only after reading and saving the original chip, and only if the board revision printed on the PCB agrees with the source.
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.