Toshiba Satellite A350 / A355 (Compal LA-4571P) Schematics & BIOS Bin
Motherboard Specifications
The Compal LA-4571P (KTKAA / Los Angeles 10/10G) is the core motherboard used in the Toshiba Satellite A350 and A355 laptop series. This architecture is based on the Intel Cantiga chipset and supports Intel Penryn processors. It comes with dedicated ATI graphics (M82 or M86).
- Brand / Model: Toshiba Satellite A350 / A355
- Motherboard Part Number: Compal LA-4571P (KTKAA / Los Angeles 10)
- Processor Support: Intel Penryn (Core 2 Duo)
- Chipset: North Bridge: Intel Cantiga | South Bridge: Intel ICH9-M
- Graphics: ATI Mobility Radeon (M82 128/256MB or M86 256/512MB)
Common Chip-Level Faults & Repair Notes
If you're troubleshooting a dead or faulty Toshiba A350/A355 (LA-4571P), keep these points in mind:
- Graphics Artifacts / No Display: The dedicated ATI graphics chip (M82/M86) is the most frequent cause of failure on this model due to thermal cycling. Reflowing or replacing the BGA chip is the standard solution.
- NEC/Tokin Capacitor Issue: Like many Toshiba laptops of this generation, this board may suffer from a failing NEC/Tokin Proadlizer under the CPU socket. If the laptop crashes randomly or shuts down under load, replace the NEC/Tokin with 4x 330uF Tantalum capacitors.
- No Power: Verify the 3.3V and 5V Always-On rails. Check the main 19V rail and the DC jack connector which can become loose over time.
Free Download Section
1. Toshiba Satellite A350/A355 (Compal LA-4571P) Schematic Diagram (.PDF)
Analyze the power sequence and track down board components with the complete Rev 2.0 schematic.
2. Toshiba Satellite A350/A355 (Compal LA-4571P) Boardview File
Quickly locate any resistor, capacitor, or test point on both sides of the motherboard.
Board View Download Free (Coming soon)
If anyone has this board view file, please drop the link in the comments below!
Need BoardView Software? Download it Free Here.
3. Toshiba Satellite A350/A355 Clean BIOS Bin File
A corrupt BIOS can cause a "no display" issue even if the graphics chip is fine. Programming a clean BIOS is a crucial troubleshooting step.
⚠️ Always remember: Create a backup of your original BIOS chip before programming the new bin file so you can safely revert if necessary.
BIOS + EC Bin Download Free (Coming soon)
If anyone has this board bios bin file please share the link in the comment section below.
