HP 15dy-2021nr wont power on mystery volts

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  • supermattch
    New Member
    • Sep 2025
    • 4
    • usa
    #1

    HP 15dy-2021nr wont power on mystery volts

    Hi everyone.

    I am diagnosing my personal laptop, because it wont power on and no leds light up.

    At the dc-in there are 8 pins, 1 and 2 shows healthy 19.66 volts. The next three are ground, but the 6th one shows .283 volts. This is strange to me, it should be 3.3 or 5 or aome volts not 0.283v. As I am new to this, I would like some guidance. Please someone advise me on what to check next.

    Oh the boardview and schematics I am using is for a similar model as I cannot find the proper one anywhere. Quanta DA0P5HMB8F1 rev F. Nowhere on the internet.
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