Lae801p Rev 20 Schematic Better |link| -

Completely dead laptop; 0V on main current sensing resistor.

It should provide all necessary information, including component values, part numbers, and reference designators.

It provides a more precise map of the power-on sequence, which is essential for diagnosing "no power" or "power-on, no display" scenarios. lae801p rev 20 schematic better

Since this board relies on USB-C for charging, the communication between the charger and the PD controller is vital. If the CC1/CC2 lines are shorted, the board will never request 20V from the adapter.

Locate the 3V/5V buck regulator page. Use your multimeter to verify if the dual coils are producing clean power. The Rev 2.0 schematic is critical here, as it maps out the exact enable pins ( EN or ENTRIP ) coming from the EC to turn these power supplies on. Step 3: Verify the EC Wake Signals Completely dead laptop; 0V on main current sensing resistor

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If your board has no lights (no power), start with these checks found in the schematic: Input MOSFETs (PQA1/PQB12): Since this board relies on USB-C for charging,

The is the engineering backbone of millions of budget and mid-range laptops globally. Most notably, it powers the highly popular HP 15-BS series notebooks . For motherboard repair technicians and micro-soldering enthusiasts, having accurate documentation is the difference between a successful repair and a permanently dead board.