HP OMEN NO power no light

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  • lapfix
    Badcaps Legend
    • Mar 2020
    • 2765
    • my workshop

    #1

    HP OMEN NO power no light

    HP OMEN : DAG35DMBAD0
    NO power ,no short ,no corrusion
    Consumption : when charger plg in = 0.004 amp

    Only 3/5 vl are present when charger connected..when i put my red probe at the coils of 3/5volts and power on with my power suplly it try to rise than 0v.
    when try to power on using power button i note this starnge value : 3v then 0.300v then 3v !
    No light at power button led

    All coils resistances :
    Pl 2001 =3v measured with kohm.
    pl 2004 = 5v measured with kohm
    pl 6001 = 49.7ohm
    pl 4012 = vccsa = 24.4 ohm
    pl 3001 = 1.2v = 375 ohm
    pl 4003/4004 / 4006 = vcc core = 7.5 ohm
    pl 4008 / 4010 = vccgt = 9.8 ohm
    pl 9001 /9004 /9005 = nvdd = 4.6 ohm
    pl 9010 = nvvdds = 58 ohm
    pl 9017 = vddq = 266 ohm
    Bios pin 8 = measured with kohm
    ​Pr1008 measured with kohm

    Measuring BQ Pu 1001
    Pin 20 =19v
    pin 6 =2.6v
    pin 3 = 19v
    pin 16 = 6v
    pin 5 = 3v =acin present at pin 97 io
    pin 17 = 5.888v

    RTC section
    Rtcrst = 3.2v
    Srtcrst = 3.2v

    IO
    106 = 3v
    74 = 3v
    127 = 3v
    14 = 3v
    123 =3v
    107 = 3v
    67 = adpid = 0.837 ( power supply )

    Swisher
    Pu 5001 = 5vs5 to +5v and 5v cam measured with kohm
    Pu 5002 = 3vs5 to 3vlan and +3v measured with kohm
    pu5004 = 3vs5 to 3v gfx and 3vaon measured with kohm

    So all my measure seems good , i try bios from smdflea post same behaviour..
    When button trigger no DNBSWON# and no rsmrst ( no short)

    Schematics and BRD : https://www.badcaps.net/forum/troubl...power-no-light



    ​​



  • mon2
    Badcaps Legend
    • Dec 2019
    • 14679
    • Canada

    #2
    Hi. Your 3v/5v switching rails are cycling? Check the enable of these regulators- are they also cycling?

    Comment

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