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Gigabyte RX 460 4GB fan not spinning

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    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

    #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?

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      #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

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        #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)

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