Palit Geforce GTX 1080TI - not detecting PEX Power

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  • Fump
    New Member
    • Aug 2020
    • 6
    • Germany

    #1

    Palit Geforce GTX 1080TI - not detecting PEX Power

    Hi,

    i've got a Palit GTX1080TI Blower with which someone previously tampered and tried to repair it.
    Fortunately, it enables the screen, so gpu and stuff seems intact. Powerrails also ok. Only problem is: Despite of having connected both power connectors, it complains that PEX-Power is missing (on screen message, like cables are physically missing) and refuses to boot.

    I already asked for boardviews in another thread, which should allow me to better check everything.

    But despite of that, any ideas where to start looking?

    Kind regards
    Stephan
  • Grucha98
    Member
    • Oct 2021
    • 41
    • Poland

    #2
    Re: Palit Geforce GTX 1080TI - not detecting PEX Power

    Start with fuses of course, check photo of pcb maybe something is missing

    Comment

    • Fump
      New Member
      • Aug 2020
      • 6
      • Germany

      #3
      Re: Palit Geforce GTX 1080TI - not detecting PEX Power

      Originally posted by Grucha98
      Start with fuses of course, check photo of pcb maybe something is missing
      - Fuses are all good
      - rails and voltages are ok
      - no pieces missing

      I have a spare pcb (defect, missing components and gpu) to take parts from and compare.

      I suspect something in the INPUT_PEX8_DT <----> GPIO path to be fishy.

      What reasons are possible for causing the corresponding bios-message?
      I thought without working NVVDD the card would not turn the screen on and the board is load balancing between PEX1,2 and PCiE?

      I'm relatively new to graphics cards, so i can only access my general knowledge of electronics and computers, which should be plenty, but in this case not enough.

      Comment

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