Gigabyte RX 460 4GB fan not spinning

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  • Traptor
    Senior Member
    • Nov 2021
    • 111
    • Magyarország
    #1

    Gigabyte RX 460 4GB fan not spinning

    Hi Guys,
    I have another card with another problem.
    I got this card on broken status, but I found the main problem, which was one broken mosfet. I replaced it and the card is get picture but fan is not spinning.
    I tried to measure the voltages but I dont know where is the problem.
    On the last mosfet (Q262) I measured that values as you can see on the attached picture.

    Thanks in advance your help.
    Attached Files
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    • gt403cyl
      Member
      • Jan 2017
      • 35
      • Canada
      #2
      Re: Gigabyte RX 460 4GB fan not spinning

      Have you tried turning the fan speed up manually?
      Have you checked a different fan?
      Is there voltage at the fan output pin?

        Comment

        • mrsdsdsdsd
          Member
          • Oct 2021
          • 14
          • US
          #3
          Re: Gigabyte RX 460 4GB fan not spinning

          i have an rx 470 with the exact same problem, let me know if you find a solution

            Comment

            • Traptor
              Senior Member
              • Nov 2021
              • 111
              • Magyarország
              #4
              Re: Gigabyte RX 460 4GB fan not spinning

              Unfortunately the card doesnt work at the moment.
              Dont get picture.
              I measured the voltage and I find one problem: if the card is the default the VCC is only 800mV and the posting is stopped. But if the card is the secondary the VCC is 900mV.
              I think it means the regulator chip fault. (NCP81022)

                Comment

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