Hi Everyone!
Back again this time with LA-6847P board, it's from a toshiba nb and won't power on it comes with a power adapter 19v / 4,74A and notebook is working with nominal 19v / 3,95A. I just recover it with a new Si4483ADY (PQ8) like the shorted one before... and a new polifuse on B+ line (PF2) but after 1 sec after connected to the adapter, a small whistle come from it and back again with Si4483ADY shorted like before
![Banging Head |O](https://www.eevblog.com/forum/Smileys/default/bangheadonwall.gif)
could you help find witch section is shorted and give it a new life
![Tweak :-/O](https://www.eevblog.com/forum/Smileys/default/smiliey_cal.gif)
. Below schematics and datasheet, i will provide some measurements after but it's so hurting if i remove shorted mosfet 19v is stable but i can't measure so much more on the board instead if the component it's on the board adapter goes on under protection mode and stop regulating power, same with battery pack..
Thank's