i need idea about bypass hp omen fans

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  • mo000
    Badcaps Veteran
    • Nov 2017
    • 285
    • algeria
    #1

    i need idea about bypass hp omen fans

    hi
    i have hp omen gaming laptop
    the fan not spining and i have 90b error
    on fan connector
    pin 1 =gnd
    pin2(fan signal)=3.3v
    pin3(+12fan)=12v
    pin4(pwm)=0.12v
    pin4 goes straight to kbc
    is that the kbc is faulty
    i try to inject 1.2v on pin4 the fan start spining but full speed
    any idea to bypass pin4
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