Schematic PDF, 166 KB, covering Samsung power boards BN44-00438A and BN44-00468A, with the name also carrying the code F77U. BN44 is Samsung's numbering for TV power supplies, and one document for two numbers suggests closely related designs. Use it to trace the standby and main converters, check rail voltages and locate faulty components. Compare the label on your board carefully, since differences between the two versions may affect component 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 @pdf_servicemanual. Enginerys does not host this file.
All sources (12)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @pdf_servicemanual | 17 May 2019 | Open file on RM Schematics |
| @gunvantrathore | 27 Dec 2019 | Open file on RM Schematics |
| @pdf_servicemanual | 2 Apr 2021 | Open file on RM Schematics |
| @pdf_servicemanual | 12 Sept 2021 | Open file on RM Schematics |
| @pdf_servicemanual | 12 Sept 2021 | Open file on RM Schematics |
| @pepeelectronica | 24 Apr 2022 | Open file on RM Schematics |
| @pepeelectronica | 24 Apr 2022 | Open file on RM Schematics |
| @ShareMan_Electronic_Files | 28 Apr 2025 | Open file on RM Schematics |
| @schematics_bios | 24 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 24 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 1 Aug 2026 | Open file on RM Schematics |
| @schematics_bios | 1 Aug 2026 | Open file on RM Schematics |
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