Lenovo Z570 Case Study
Posted: Wed Mar 02, 2016 6:21 am
Lenovo Z570 case study..
LAptop power up but no display .....
PSu Reads up to 0.26 AMps ..before power button is pressed ....and after power on goes upto 1.8 -2.0 amps AMps(still no display)
.while checking for any overheating ..component i Burnt my left index finger ..
it was HEX mosfets .....removed the mosfet ....and there was still short showing .. on PTC4304
removed it ....then it showed all clear ...new components placed
Job done...
here is the pic
LAptop power up but no display .....
PSu Reads up to 0.26 AMps ..before power button is pressed ....and after power on goes upto 1.8 -2.0 amps AMps(still no display)
.while checking for any overheating ..component i Burnt my left index finger ..
it was HEX mosfets .....removed the mosfet ....and there was still short showing .. on PTC4304
removed it ....then it showed all clear ...new components placed
Job done...
here is the pic
