compaq CQ43 cant on list volt measured

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  • ktmmotocross
    Boardkiller
    • Feb 2014
    • 3559
    • slovakia
    #21
    Re: compaq CQ43 cant on list volt measured

    Originally posted by sasser
    VIN at U1001 is 2.54v . i need to replce this ic fisrt ? then i noticed here
    just remove it to check if VIN is back to 19V

      Comment

      • whaldsz
        Badcaps Veteran
        • Apr 2013
        • 395
        • Philippines
        #22
        Re: compaq CQ43 cant on list volt measured

        You mentioned in your original post that pin 16 has 19v. Did I misunderstood it?

        Anyway, if VIN at U1001 is 2.54v then check its resistance to ground. If the reading is very low resistance, this means you have a problem with 19v rail.

        Also check the voltage and resistance of D1004. DCIN_L or VBAT could be abnormal.

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