ASUS Crosshair V Formula-Z no POST

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  • DrFalken
    Senior Member
    • May 2008
    • 122
    #1

    ASUS Crosshair V Formula-Z no POST

    Hi!
    I have an ASUS Crosshair V Formula-Z (part number C9M0BX123818) that powers on but does not POST (boardview attached)
    The small debug display (2 x 7-segment LEDs) remains off.
    RAM, CPU, VGA and PSU work fine on another motherboard.
    I checked some voltages and it seems +1.1VNB is missing.
    I also replaced PCE503 and PCE500 (100uF 16V) because they were defective.
    What else can I check?

    Link to boardview --> https://www.badcaps.net/forum/troubl...la-z-boardview
    Last edited by SMDFlea; 02-16-2025, 05:51 AM. Reason: Link to boardview
    Tags: None
    • FriedFred
      Senior Member
      • May 2024
      • 137
      • Germany
      #2
      Is "+1.1VNB" shorted to GND?
      Is there any coil shorted to GND?
      Does the EC chip / chipset chip has it's "always on" voltages?

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