HP 15s-FQ Series / MB: DA0P5HMB8J0 REV: J / Loop turns on and off without video.

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  • gabrielA7
    Member
    • Jan 2022
    • 13
    • brasil
    #1

    HP 15s-FQ Series / MB: DA0P5HMB8J0 REV: J / Loop turns on and off without video.

    When I turn it on, the white LED flashes and then turns off, and it stays like this.

    We have 3 and 5V S5 as soon as I start it, then the voltages drop because we don't have the MAIN_ON that originates from IT5570 pin 33.

    We don't have a short in the sources.

    I re-recorded 2 BIOSes here on the site, which apparently are OK.

    Now I would go for the EC IT5570 BIOS, but I couldn't find it anywhere.

    What else could I check to make this MAIN_ON pulse appear?​
    Tags: None
    • pc_okay
      Badcaps Veteran
      • May 2022
      • 241
      • FRANCE
      #2
      Hello friend,

      Do you have VCCDSW (coming from +3VPCU) ?
      SLP_S5# , 4 and 3 ?

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