Circuit diagram for MSI MS-7786 version 1.0, the A55M-P33 board for the FM1 socket with DDR3 memory, supplied as a PDF inside a RAR archive. It covers the CPU VRM, memory power, chipset rails, the SIO and the BIOS chip wiring, which helps when diagnosing no-power, no-post or a shorted Vcore. MSI desktop boards carry the MS-xxxx code with a version number on the PCB, so check that both match. A boardview helps locate components quickly.
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 @schematicslaptop. Enginerys does not host this file.
All sources (3)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @schematicslaptop | 12 Aug 2023 | Open file on RM Schematics |
| @cyberlanelectonik | 19 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 14 Aug 2026 | Open file on RM Schematics |
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.