Schematic of the Samsung BN44-00191B power board in PDF format, 309 KB. Beyond the part code and B revision letter the name gives no details about the television or monitor it fits. BN44 modules typically combine a standby supply, PFC and main converter, and sometimes LED or CCFL backlight drive, and this drawing helps locate each stage when diagnosing no power, clicking or a missing rail. Match the printed part number and suffix on the PCB before using values from the diagram. A normal PDF reader opens it.
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.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.