Electrical schematic for revision 1.03 of the Gigabyte GA-H81M-HD3 board, delivered as a PDF inside a 672 KB RAR. Use it to trace supply rails from the ATX connector to the chipset and CPU, find the MOSFETs and controllers of the VRM, and work through the power-on sequence when the board will not start. Open it in any PDF viewer after unpacking. The revision silkscreened on the board should read 1.03 for the part references and values to line up.
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 (4)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @schematicslaptop | 25 Apr 2023 | Open file on RM Schematics |
| @boardviewsandachematics | 2 Sept 2025 | Open file on RM Schematics |
| @cyberlanelectonik | 15 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.