B749 No Lights on Case Fans


I just purchased a new (open box) B749 and the case fan lights do not work. This is the Lian Li Lancool 205 case.

Pressing the M / C buttons have no effect at all. I have traced all of the wires from the fans to the controller and the cable from the controller to the buttons.

The AURA app will control the CPU fan lights.

Is there anything else I can check?


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