Dell Vostro 2420 run voltage missing

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  • ahmarzo
    Senior Member
    • Mar 2015
    • 168
    • india

    #1

    Dell Vostro 2420 run voltage missing

    Have Dell Vostro 2420 motherboard with run enable missing q3602 pin 2 has 3 v no voltage at pin 5 and 6 .
  • mon2
    Badcaps Legend
    • Dec 2019
    • 13949
    • Canada

    #2
    Re: Dell Vostro 2420 run voltage missing

    The mosfet at u3601 and u3602 are N-channel mosfets so the gate voltage must be higher than the voltage being passed between source / drain pins to enable.

    Confirm if the voltage of 15V_S5 is present.

    Comment

    • ahmarzo
      Senior Member
      • Mar 2015
      • 168
      • india

      #3
      Re: Dell Vostro 2420 run voltage missing

      Thanks mon2 15v was missing traced the circuit to pd4103 after replacing it the laptop started giving display .

      Comment

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