Acer Aspire 5742 Motherboard (Compal LA-6582P / PEW71) Schematics & BIOS Bin
Motherboard Specifications
The Compal LA-6582P (PEW71 UMA) is a motherboard designed for the Acer Aspire 5742 series laptops. This specific variant is an UMA architecture (Unified Memory Architecture), meaning it relies on Intel integrated graphics rather than a discrete GPU. It supports Intel Core i3 and i5 processors (Arrandale) with DDR3 RAM support.
- Board Model: Compal LA-6582P (PEW71)
- Graphics: UMA (Intel Integrated Graphics)
- Supported Models: Acer Aspire 5742, 5742Z
- Platform: Intel Arrandale
Common Chip-Level Faults & Repair Notes
When troubleshooting a dead or no-display Acer Aspire 5742 (LA-6582P board), check these common failure points:
- No Power (19V Short): Verify the main 19V rail. Shorted ceramic capacitors near the CPU VRM are a common issue on this board.
- 3V/5V Standby: Check if the standby IC is generating the ALW 3.3V and 5V. If 3.3V is missing and the IC is hot, the KBC/EC may be shorted.
- Turns on but No Display: Often caused by a corrupted BIOS or issues with the CPU core voltage (VCC_CORE). Reflashing the BIOS/EC is the recommended first step.
Free Download Section
1. Acer Aspire 5742 (LA-6582P) Schematic Diagram (.PDF)
Use this schematic diagram to trace power lines, signals, and component pinouts for chip-level diagnostics.
2. Acer Aspire 5742 (LA-6582P) Boardview File
A boardview helps locate component designations and traces physically on the board.
Board View Download Free (Coming soon)
If anyone has this board view file, please comment the link below!
If you don't have BoardView Software, download it here: Board Viewer Software Free Download
3. Acer Aspire 5742 Clean BIOS + EC Bin File
Working SPI Flash dump to resolve no-display, fan spinning at full speed, and power loop issues.
Always remember: Backup your old BIOS chip and save it to a USB or hard drive before flashing.
