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No display problem solved in LA-E791P due to EC_RSMRST#

Discussion in 'Casie Studies' started by atree2012, Feb 21, 2020.

  1. atree2012

    atree2012 New Member

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    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.

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