No display problem solved in LA-E791P due to EC_RSMRST#
Posted: Thu Feb 20, 2020 6:21 am
Hello Friends,
Its case study of HP 15-bs542tu with MBD la-e791p which was having only 0.18A after power ON.
The motherboard was cleaned and no sign of corrotion found on mbd. So after checking all the required voltage
I found that EC_RSMRST# supply on pin 100 on KBC kb9022q was not present so I think to replace KBc so I remove KBC and found corrosion
under KBC pin 100 and the track was cut due to corrotion. I make jumper and put the same KBC and ALL done.
Supply on pin 100 also come 3.3v and Laptop is also OK. Everything works perfect.
Its case study of HP 15-bs542tu with MBD la-e791p which was having only 0.18A after power ON.
The motherboard was cleaned and no sign of corrotion found on mbd. So after checking all the required voltage
I found that EC_RSMRST# supply on pin 100 on KBC kb9022q was not present so I think to replace KBc so I remove KBC and found corrosion
under KBC pin 100 and the track was cut due to corrotion. I make jumper and put the same KBC and ALL done.
Supply on pin 100 also come 3.3v and Laptop is also OK. Everything works perfect.