I have a bosch 1200 express washing machine. at some point during my last wash, which had 2 towels in and a few other bits, but no more than i have put in on previous occasions, the drum stopped turning and will not spin either. It fills with water and drains away but will not wash or spin. I have checked the filter, belt and changed the brushes which were worn, but it is still not working - does anyone have any ideas or do I need to write it off!