As an update, the desk has been replaced within three days.
Support from the local distributor in Italy (Proel), was swift and straightforward.
Tomorrow we'll have a second dry run with the new desk.
Keeping the community posted.
A Behringer Dealer told me that he had heard of several motorized fader failures and so he explored further and found that when you remove the circuit board that the faders are mounted on, the belt can be slipped back on quite easily. And that the little white gear on the fader motor appears to not have been pushed down all of the way. He said that if the gear is pushed down until it almost touches the head of an adjacent screw that the belt will ride on the top of that screw and cannot come back off in the future. He said that he was going to report this to Behringer and that it appeared to be a manufacturing flaw. Since it appears to be happening a lot, I hope that he did that.
I asked him about calibrating the fader and he said that the fader calibration appears to be based on the fader attenuation and that the fader should be self calibrating.
Dan Haynes firstname.lastname@example.org
X32, Two X32 Racks, dbx PA+, MacBook Pro, 2 iPad's (1 sound, 1 lights). Yorkville LS2100P, NX750P.