UX31A +VGFX_CORE missing

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  • jasko_jacker
    Badcaps Legend
    • Oct 2014
    • 1137
    • italy
    #1

    UX31A +VGFX_CORE missing

    Asus ux31a, cpu cold bios reprogrammed:
    5v and 3v ok but
    power adaptor led is orange without battery
    +VGFX_CORE 0 volt
    on PU8000 RT8168B:
    VRM_PWRGD 0v <------???? come from ITE --> SUS_PWRGD 3V
    P_GFX_TONSET_10 19v
    P_GFX_BST_30 5v
    P_VCORE_VDDP_30 5v
    P_VCORE_BST_30 5v
    P_VCORE_TONSET_10 19v
    P_VCORE_TMPMAX_10 2v
    P_VCORE_OCSET_10 2v
    P_GFX_OCSET_10 2v
    Attached Files
    Last edited by jasko_jacker; 06-29-2017, 08:46 AM.
    Tags: None
    • jasko_jacker
      Badcaps Legend
      • Oct 2014
      • 1137
      • italy
      #2
      Re: UX31A +VGFX_CORE missing

      After a test with power on sequence schemas, I found :
      PWR_SW# -> H -> L after push (STEP 8)
      EC -> PCH:
      PM_PWRBTN# -> L (STEP 9)
      PCH -> PM_SUSB# -> H -> should be active low (STEP 11)
      PCH -> PM_SUSC# -> L -> is active (STEP 12)

      Seems to be an issue with pch because PM_SUSB# is Hight
      it's true?

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