If you are dealing with a specific fault on this board, I can help you decode the exact circuit paths. Could you let me know (e.g., completely dead, spinning fan with no display, power cycling)? If you have a multimeter, sharing which voltage rails are missing will help narrow down the issue. Share public link
Are you troubleshooting a or a power issue on this board? HP-15t-bs000 (MOBO. LA-E801P REV. 2.0) Not Working
UMA (Integrated) or Discrete (e.g., AMD R17M-M1-30). Where to Find the Schematic
Supports Intel Sky Lake-U or Kaby Lake-U processors (BGA 1356P). Memory: Dual DDR4 SODIMM slots. lae801p rev 20 schematic better
Check the gate voltage of the MOSFETs. The charging IC must drive the gates high enough to pass current.
The Rev 2.0 schematic is essential for identifying dual-function chips. For instance, the
Before you even hit the laptop's power button, the motherboard must be "awake" enough to look for user input. The +19V B+ rail feeds a step-down buck controller (often a dual PWM chip or separate synchronous ICs) to generate: If you are dealing with a specific fault
| Parameter | Original Rev 20 | Improved Rev 20B | |-----------|----------------|------------------| | Output ripple (20MHz BW) | 210mV pk-pk | 38mV pk-pk | | Switching node overshoot | 28V | 16V | | Max load before thermal shutdown | 3.2A | 5.1A | | EMI (CISPR 22, 30-100MHz) | Fail | Pass with 6dB margin | | Efficiency at 4A | 81% | 89% |
: The charging IC (often a BQ-series chip) measures the voltage. If valid, it drives the gates of these input MOSFETs to distribute the VIN (+19V) rail across the entire board. Phase 2: Standby and Always-On Rails (ALW)
The Rev 2.0 schematic is crucial because it offers improved component mapping over earlier revisions, specifically addressing common power-related failures. LA-E801P Rev 2.0 Schematic & Boardview Highlights Compal CSL50/CSL52 (LA-E801P) 2.0 (Confidential) Common Applications: HP Pavilion 15-bs, 15t-bs, 250 G6 (KBL-U/SKL-U) Share public link Are you troubleshooting a or
Unveiling the LAE801P Rev 2.0 Schematic: A Comprehensive Overview
Disclaimer: Always verify with your specific unit. Modifications are at your own risk.