LA-H781P
LA-H781P is a Compal Acer main board number. The catalog lists 5 files for it: 2 BIOS files, 1 schematic, 2 boardviews and 1 EC firmware image.
Revisions seen in file names: 1A. The earliest file dates from June 2021 (Schematics & Boardviews Archive, Cyberlan Electronics and BIOS Archive).
BIOS dumps 2
Schematics 1
Boardviews 2
From the uploader
Acer Aspire 3 A317-51K -EX215-51KG-3224 LA-H781P LA-H781P BIOS & KBEC
Board facts
| Board number | LA-H781P |
|---|---|
| Designed by | Compal |
| Platform group | LA-H |
| Revisions | 1A |
| Graphics | discrete GPU |
| First seen | 2021-06-27 |
| Source channels | Schematics & Boardviews Archive, Cyberlan Electronics, BIOS Archive |
| About the number | Compal board numbers start with LA- for main boards and LS- for daughter boards. |
What these files are for
A BIOS dump is a full image of the board's SPI flash chip. It is written back with an SPI programmer when the original firmware is corrupted, after a chip replacement, or to recover from a failed update. Read and save the original chip first: serial number, DMI data and the Intel ME / AMD PSP state differ between boards.
A schematic is the circuit diagram of the main board: power rails, power-up sequence, component values and net names. It is the reference for measuring voltages and tracing a fault.
A boardview is the component placement map of the PCB: click a part or a net and the viewer highlights where it is and what it connects to. Used together with the schematic to find test points.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| .bdv | Honhan .bdv boardview | OpenBoardView, FlexBV or Honhan BoardViewer |
| PDF schematic | any PDF reader; Sumatra PDF and Foxit handle large schematics well | |
| .rar | RAR archive | 7-Zip or WinRAR |
| .bin | BIOS image inside the archive (usually .bin) | a CH341A, XGecu T48 / TL866II Plus or RT809H programmer |
Questions
Who designed the LA-H781P board?
LA-H781P is a Compal board number used by Acer.
Is there a boardview for LA-H781P?
Yes, 2 boardview files in .bdv format.
Where do the download links go?
Each button opens the original public Telegram post the file was shared in. ChambersDesignInc.com only indexes and cross-references those posts.