Free direct component diagnostic files and power distribution diagrams can be researched on the Elektrotanya Chip Schematic Board Database .
If your TV can still power on and enter standby mode, you can often flash via USB. Tp.vst59s.pb813 Firmware Mirror
This is the easiest recovery method and works if the TV's bootloader is still operational. look for files named:
Firmware mirror repositories usually compress files into .rar or .zip formats. Once extracted, the core binary file must be named accurately for the bootloader to read it. For this specific board, look for files named: Tp.vst59s.pb813 Firmware Mirror