Fan spins full speed, no display, current stops at 0.2A. Schematic Fix: The LA-D401P uses a SVID protocol between the CPU and the NCP81215 VR controller. The schematic shows the VR_ON signal (usually from the EC). If VR_ON is present but VCore is missing, check the bootstrap circuit and the MOSFET drivers (e.g., NCP81209). Without the schematic, you would be replacing the wrong IC.
Based on technical documentation for the HP Spectre 13-v series typically features: la-d401p schematic
First, it is crucial to understand the naming convention. The "LA" prefix indicates that the motherboard was designed by , one of the largest Original Design Manufacturers (ODMs) in the world. Compal builds motherboards for brands like Dell, HP, Lenovo, and Acer. Fan spins full speed, no display, current stops at 0
Schematics and "Boardview" files (typically in .brd or .pdf format) for the If VR_ON is present but VCore is missing,
Features a complex DC-to-DC conversion system to step down the 19V adapter voltage. 2. Critical Power Rails to Monitor