Reply to The volume fader is dead!!

I have no idea why I bought this "greatest" controller of the year. As you might notice, I got a serious jog-wheel problem when I received it. After several days it disappeared automatically. Today the volume fader of deck D is totally dead, I cannot control the volume of deck D!! My s4 is only for home-use and I even bought a flightcase for it. Does anybody have the solution of this problem? I'm pissed of by NI...