Hello Philippe,
I'm glad you still here.
Well, I got this Origin from one repair man from Montreal Canada and he said owner one day turn on Origin and UI show up and no sound from all outputs.
After a repair man contacted Arturia (David) and got other main board ( some case Arturia said this used and we don't know if it's good working condition.)
He replace with new one and Origin has same problem like before.
I have two an ideas, may DSP firmware corrupt or both a main board works fine and this problem may relative to screen / control board.
Here is one post about problem with screen. ( no sound was also).
http://forum.arturia.com/index.php?topic=82537.0Now Origin work as midi controller.
Also, open case 266109 about this problem.
Let me know if you have any an ideas how fix it.
I could provide for you any needs (photo, video, log files)
Thanks,
Dimitri