Reply to Traktor S4 fader is broken, help?

Hi,

I'm having a massive problem with my S4 controller. The A channel fader will not work. I've attached a video to describe the problem. I've re-calibrated 10 times and nothing happens. I've got a HUGE gig next weekend and I need advice.

Is the unit under warranty? the unit is insured but I'm not sure I can get a new one within the week. The S4 is 9 months old and get's used approx 3 times a week for 4-7 hour gigs.

Any help would be massively appreciated!

http://youtu.be/i4oN-7qGiGQ