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Thread: Dell Latitude E6440 Dead Recover Done

  1. #1
    GD Management Team Habeeb Kambrath's Avatar
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    Apr 2016
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    Cool Dell Latitude E6440 Dead Recover Done

    Laptop come with Dead and water damage.
    Clean the PCB and try to Power On ,but some time On

    checked 19v from supply 19v is OK , Checked +5V_ALW and +3V_ALW,the two voltages missing.
    Changed Step Down Voltage Controller PU100(TPS51225C) from another spare board and start to get +5V_ALW and +3V_ALW and laptop powerd On

    and found one more problem;auto on after shutdown laptop,checked POWER_SW line ,POWER_SW line is ok,checked all power on related signals and found missing on +3.3V_M/+3.3V_SUS source,and refixed U36(PS22966DPUR)

    all issues solved

    › See More: Dell Latitude E6440 Dead Recover Done
    Last edited by Habeeb Kambrath; 04-30-2021 at 04:18 PM.
    Best Regards,
    Habeeb Kambrath

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