Usually a Renesas/Intersil chip (e.g., ISL series) regulating battery charging and input voltage ( +VINpositive cap V cap I cap N
[ +19.5V DC-In ] │ ▼ [ Charger IC / PD7 ] │ ▼ [ +3.3V / +5V Always-On ] ──► [ KB9022 Super I/O / EC ] │ ▼ [ +1.35V DDR3L Rail ] ──► [ +1.0V / +0.9V CPU Core Rails ]
Essential for DDR4 memory and the PCH logic.
Have a specific question about a measurement on your LAD711P Rev 10? Refer to test points TP1-TP12 on the top schematic and check against the nominal values provided in the component list accompanying the diagram. lad711p rev 10 schematic top
If you are troubleshooting a specific failure on your LAD711P motherboard, let me know (e.g., completely dead, turns on with no display, blinking diagnostic LEDs). I can help you identify which power rail to test or guide you to the exact component pins to check with a multimeter .
The EC (Embedded Controller) and main SPI BIOS chips on the LA-D711P frequently suffer code corruption. Re-flashing both with clean dumps via hardware programmers resolves a large majority of "no POST" symptoms.
, follow the top-side schematic to verify these essential voltages, usually marked near coils: Usually a Renesas/Intersil chip (e
Corrosion most frequently targets the charging IC, the BIOS EEPROM chip, and the logic circuitry surrounding the EC chip.
This is the brain of the LAD711P. The Rev 10 uses an or UC3844 (depending on date code). The schematic top shows:
The (also known as the BDL51) is a motherboard manufactured by Compal for HP 15-BA , HP 15-AF , and HP 255 G5 series laptops. It is typically paired with AMD processors, such as the E2-7110. Schematic and Technical Resources If you are troubleshooting a specific failure on
The center of the board is occupied by the AMD APU, which combines the CPU and GPU. This is usually the BGA component, requiring precise heat management. 2.2. Power Management IC (PMIC)
: You can find listings on AliExpress or eBay , where sellers often provide tested used or "dismantled" units.
SATA ports (HDD/ODD), USB 2.0 ports, PCI Express x1 slots (WLAN/WWAN), High Definition Audio, and the BIOS ROM via the SPI bus. 2. Power Generation and Management Sequence