La-g121p Schematic [best] -

is a specific motherboard (EPG52) commonly found in HP 15-bs289wm

Dell laptops are notorious for charging issues or "Plugged in, not charging" errors. The LA-G121P schematic details the charging IC (often an Intersil/Renesas chip). You can verify if the PS_ID signal—the signal from the center pin of the Dell power adapter—is reaching the Super I/O chip (KBC). 4. The Voltage Rails Table la-g121p schematic

• Pin 20 (VCC): 19.5V? (If not, broken DC jack)
• Pin 6 (ACDRV): 25V? (If not, MOSFET PQ5 is open)
• Pin 16 (REGN): 6.0V? (If not, charger IC is dead) Fix: Replace PQ4/PQ5 dual MOSFET pack if ACDRV is high but no voltage passes.

Memory: Supports DDR4 SDRAM, often featuring a single memory slot. is a specific motherboard (EPG52) commonly found in

Power Button Signal: Tracing the ON/OFF signal from the keyboard connector to the KBC. On this model, the power button is often integrated into the keyboard matrix.  Where to Find the Schematic  Pin 20 (VCC): 19

• Page 1: Block Diagram (Overview of the whole system).
• Page 2-3: CPU & PCH Power delivery.
• Page X: Audio Codec (Conexant usually).
• Page Y: Keyboard/Touchpad interface.