Hig41uatx Rev | 11 Schematic

What are the exact the board is showing? (e.g., completely dead, fans spin but no post, cycling on/off)

A standard schematic for this board is divided into logical pages, usually starting with a block diagram. When tracing a fault, you must understand how these blocks communicate. The Power-On Sequence (Startup Block)

Holding CTRL+F10 during startup may reveal advanced BIOS settings. Conclusion The HIG41UATX Rev 11 Go to product viewer dialog for this item. hig41uatx rev 11 schematic

The (also manufactured under the OEM code name Eton for HP desktop PCs like the Pro 500B) is a legacy LGA 775 motherboard based on the Intel G41 Express and ICH7 chipset architecture. Finding a direct engineering schematic or boardview file ( .brd or .pdf ) for this specific revision is notoriously difficult because component manufacturers rarely release their circuit designs to the public. Technicians and hardware enthusiasts must instead rely on the board's structural logic, pinout behaviors, and voltage rail distributions to troubleshoot it.

[ATX Power Supply Connected] ---> Verify +5VSB & +3.3VSB ---> Check Power Button Voltage (3.3V) | [No Display / Continuous Spin] <-- Check VCC_CORE & VCC_DDR <--- Press Power Button (PS_ON# Drops to 0V) Step 1: Validate the Standby Circuit Set your digital multimeter to . Connect the black probe to a ground chassis point. What are the exact the board is showing

Hard Drive LED [ HDD_LED ] [ POWER_SW ] Power Switch (Pin 1) ○ ○ (Pin 3) ○ (Pin 5) ○ (Pin 7) (Pin 2) ○ ○ (Pin 4) ○ (Pin 6) ○ (Pin 8) ○ Pin 9 (Empty/Key) Reset Switch [ RESET_SW ] [ POWER_LED] Power LED Hard Drive Activity LED ( HDD_LED ) Pins 3 (-), 4 (+): Reset Switch ( RESET_SW ) Pins 5 (+), 6 (-): Power Switch ( POWER_SW ) Pins 7 (+), 8 (-): Power LED ( POWER_LED ) Pin 9: No Connection (NC / Key Placement) Power Delivery & Voltage Rail Diagram

LGA 775, supporting Intel Core 2 Quad, Core 2 Duo, Pentium Dual-Core, and Celeron processors. Finding a direct engineering schematic or boardview file (

RT8802A (or similar). Pins to check:

Intel G41 Express Chipset (Northbridge) + ICH7 (Southbridge).

Board revisions often change minor components—resistor values, capacitor placements, or VRM configurations. If you are troubleshooting a Rev 11 board using a Rev 1.0 schematic, you might find discrepancies in the voltage regulator section. Always try to match the revision to avoid chasing ghosts.