Schematic PDF for the TP.MS338.PB801 TV main board, 3.54 MB; the FA prefix appears in several files of this set but its meaning is not stated. The MS338 in the code points to an MStar-based universal LED TV board family, widely used in generic and rebranded sets. The drawing helps trace DC-DC regulator outputs, the SoC and memory supplies, the panel interface and backlight control when a board has no power or no picture. Check that the printed PB number on the PCB matches before following the values.
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 @datasheets1. Enginerys does not host this file.
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