Apw70 Lac391p Schematic Portable [updated]

If the laptop does not react to the charger and shows no standby lights, the primary +19V rail is likely blocked. Test the first and second isolation MOSFETs right next to the power jack. If the gates are not receiving a driving voltage (approx. 25V for N-channel MOSFETs), check the charging IC conditions. Short Circuits on +3VALW or +5VALW

: Common troubleshooting points include the +1.8VALWP and +1.05VALWP rails. apw70 lac391p schematic portable

Must read a clean 3.3V and 5V respectively. If the laptop does not react to the

Exploring the APW70 LAC391P Schematic for Portable Devices apw70 lac391p schematic portable