Samsung BN44-00520C power board schematic, a compact 176 KB PDF, revision C per the name. BN44 identifies Samsung TV power supply boards, and the 00520 family appears in several revisions, so confirm the C suffix on your PCB sticker before using component values. A technician can use it to follow standby and main voltage generation, locate fuses and controllers and diagnose no-power faults. The small size may mean only key sheets are included.
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 @gunvantrathore. Enginerys does not host this file.
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The standard format for schematics, block diagrams, power-sequence charts and service manuals.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)