I just bought a second-hand Desktop, and two days later discovered a Sequencer knob that is not working as it should... so I'm now in the same boat.
So far, I am asking some music shops if they can help me, because I don't fancy dealing with a supplier that doesn't show lots, and lots of respect to their customers. I'm also not impressed by Arturia's 2008 claims that the Origin would get more Template updates.. there was talk of a Prophet template, .. where is it? We're 2015 and it seems that Arturia has just completely dropped the ball on its flagship synth.. my brain fails to understand this. Even if the Origin is a commercial disaster, the company needs to think of its image, of its good-will.
I've heard some incredible Jean-Michel Jarre and Vangelis patches made 100% on Origin, so the contrast between what this machine is capable of, and the after-sales behaviour of Origin is just totally incomprehensible.