I have just been talking to my Bernina Tech (Son) and he has suggested if you haven't turned
on the machine for awhile you turn it on and just let it sit for a hour or so on. There is a jelly in the board that can go a little on solid side , can also happen in the cold you have to warm the jell up again and your machine will work again , it is something they have recovered happens with that model machine . Worth a try , Cathy