When a HIG41UATX Rev 1.1 board arrives on the repair bench with a "No Power" or "No POST" symptom, follow this sequential testing protocol. Step 1: Visual Inspection
If you are using a schematic to repair a non-working board, follow this structured diagnostic workflow:
DDR voltage regulator providing 1.5V (for DDR3) or 1.8V (for DDR2).
Check the Super I/O's PASON# (Power Supply On) signal output to the ATX connector. It must drop to 0V to signal the power supply to turn on the main rails. Step 4: Tracking down a "No POST" Fault hig41uatx rev 11 schematic verified
Intel 82G41 Graphics and Memory Controller Hub (GMCH) + ICH7 Southbridge 2 x 240-pin DDR3 DIMM Slots (Dual-Channel 1066/1333 MHz) Power Inputs 24-Pin ATX Main Power + 4-Pin 12V CPU Power Expansion 1x PCIe x16, 2x PCIe x1, 1x PCI, 1x Mini-PCIe Storage 4 x SATA II (3 Gb/s ports) Power Rail Architecture & Schematic Sequencing
: Two USB 2.0 headers (supporting 4 additional ports) and a 9-pin front panel header. Power & Thermal Management Foxconn H-IG41-uATX (REV:1.0) - The Retro Web
, having access to a is crucial for component-level repair, diagnostics, and understanding the board's intricate power delivery systems. When a HIG41UATX Rev 1
The schematic confirms standard ACPI sequencing:
Are you planning to a specific fault on this board, or are you looking to upgrade the processor microcode for a Xeon mod? 2807940 uATX Motherboard User Manual - Global American
Which (e.g., CPU VRM, RAM power, BIOS circuit) are you trying to analyze? Share public link It must drop to 0V to signal the
Multimeter, Magnifying Glass, POST diagnostic card.
Verify that the 4-pin connector sends power to the VRM MOSFETs. VCORE Regulation: Ensure the CPU receives 1.1V–1.3V, depending on the processor.
When the power button is pressed, the Super I/O triggers the ATX power supply to switch on the main voltages: