This signifies that standby voltages are present, but the power-on sequence is stalling.
The primary power source distributed directly from the DC jack, regulated by the first and second isolation MOSFETs. It acts as the backbone power line for all high-power switching regulators. 2. Always-On (Standby) Power Rails la-g851p schematic
Locate the USB-C PD (Power Delivery) Controller area. Check the input MOSFETs responsible for isolating the +19V line. Verify if +3VALW is present at the coil output. If +3VALW is missing, search for low resistance to ground on that line, indicating a shorted decoupling ceramic capacitor (MLCC). 2. Power Light Blinks, No Display (Boot Loop) This signifies that standby voltages are present, but
If you are looking for specific component values or have a particular troubleshooting issue with the LA-G851P, let me know the issue you are facing. Verify if +3VALW is present at the coil output
What does the device show (e.g., completely dead, blinking LED codes, loop rebooting)?
The laboratory power supply instantly hits its current limit when injecting 19V, or the charging brick light turns off when plugged in.