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Asus 290x 109-C67157-00_02 - 1phase not work

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    Asus 290x 109-C67157-00_02 - 1phase not work

    Hello.
    Have this Asus 290x 109-C67157-00_02 and one phase wont work. when put little load i hear "coil whining" noise. with big load card freeze whole pc.
    On PWM signal of this phase i have steady 1.4V which others have 0.3V-1.6V

    i measure everything and could not find problem. i replace mosfets - no change. i exchange two of 8510 ic which control mosets -no change, so there is problem with IOR controler not give godd signal. i mesure most of component aroud it and all looks good.

    Any hint on this?
    Attached Files
    Last edited by ktmmotocross; 07-25-2022, 03:08 AM.
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