lenove g560 not power on

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  • mitu_sharma
    Senior Member
    • Jul 2015
    • 182
    • india

    #1

    lenove g560 not power on

    please help friends,

    la5752p

    voltage on pq6 (p2) is 19v ok but out voltage is low 14.4 volt
    gate voltage is 19.2 v

    voltage on pq34 (b+) is 14.4 and batt+ is also 14.4

    what was the problem
    any one kindly give me solutions for this
  • meritosari
    Senior Member
    • Oct 2010
    • 774
    • Indonesia

    #2
    Re: lenove g560 not power on

    PQ27, PQ6 and it was P-channel mosfet. on pin#4 (gate) you should have voltage (-) than source (input), so it must around 7-9v.
    you should check resistance on these mosfets respect to ground, and measure to D-S, S-D,G-S,G-S too without power and battery

    Comment

    • mitu_sharma
      Senior Member
      • Jul 2015
      • 182
      • india

      #3
      Re: lenove g560 not power on

      Hi meritosari
      Thanx for replying
      I have checked all the resistance no shorting anywhere but it sill same what can I do.

      Comment

      • ghass
        Member
        • Apr 2014
        • 45
        • lebanon

        #4
        Re: lenove g560 not power on

        replace isl6251 ic

        Comment

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