Thanks lovely people - I just called Magimix and we sorted it out over the phone (twas a connection problem ), saved myself ££ on taking it to a electrician (and then looking like a twunt because it was easily solvable)! Hoorah!
dammit - can't do it as it's a two prong European plug and is all moulded together.. There is a small screw that looks like its holding the whole base together, but I fear opening that up may commit me to a whole lot more electrical engineering than I am qualifed for (ie, none!)
I'm gutted, I use it every day and its now 9 years old (hmm beginning to see why it's died now). It just cut out, no warning signs or anything. Can I save it or do I need to go and spend vast amounts on a new one?