A common flaw in the HP 15-BS architecture involves a failing RTC circuit, which stalls the laptop before it can display an image. A clear schematic lets you instantly isolate the RTC coin-cell path, its blocking diodes, and the 32.768 kHz crystal oscillator that feeds the CPU/PCH. Pairing Your Schematic with a BoardView File
It explicitly details the isolation between high-current power ground paths (used by switching buck regulators) and clean analog grounds (used by the audio codec and clock generators).
When tackling complex board faults such as no-power, liquid damage, or short circuits, having a reliable, verified LA-E801P Rev 2.0 schematic Go to product viewer dialog for this item.
While the LAE801P Rev 2.0 is a remarkable device, its schematic diagram can be complex and challenging to work with. Common issues include: lae801p rev 20 schematic better
These flaws lead to , excessive ripple (>200mV pp) , and premature MOSFET failure .
"Parasitics," Elias muttered to himself. "It has to be parasitic inductance on the gate drive."
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. Hp 15-bs la-e801p rev 2.0 - Badcaps A common flaw in the HP 15-BS architecture
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)
is a valuable resource for cross-referencing Rev 2.0 measurements with other technicians. Graphic Conversion
We benchmarked the claim using two identical PCB layouts—one with the old schematic, one with Rev 20—under three conditions: When tackling complex board faults such as no-power,
Phase margin improves from 45° to 68° typical, eliminating output ringing during load steps.
When searching, specifically request "LA-E801P Rev 2.0" rather than 1.0, as some component identifiers changed, especially around the power input section. Example Diagnosis (No Lights) 19V is at DC Jack but not at the main inductor.
| Component | Original Rev 20 | Improved Value | Effect | |-----------|----------------|----------------|--------| | R_gate | 100Ω | 22Ω + 1N4148 parallel (fast turn-off) | Reduces overshoot | | R_pulldown | 10kΩ | 4.7kΩ | Prevents false turn-on | | Zener clamp | None | 15V Zener (gate to source) | Protects MOSFET |
If you are troubleshooting a Rev 2.0 board, keep these specific component IDs and measurements in mind: