pu19 mp2143, super io chipset, srjau bridge, lcd panel has been shorted. changed all of them and clear me bios has been written ec rom file has been got from bios rom file. so all of them orginal. laptop started to working. there is image on hdmi display; but there is no display internal lcd. PL20 lcd vcc comes 3.3v for a 1-2 sec. and gone. pq9 pin s1 should be 1.05v it comes for a sec then gone. manually added 1.05v from 1.05vsus with a 1k resistor. now 3.3v lcd vcc comes but still no display. any suggession? can not find ms16r41 schematic it is not available. i understand lcd vcc en signal not comes from this board. it uses 1.05vsus voltage to generate lcd power. boardview available but schematic is not. any advice will be good. thank you