Hello Margaret and Simon,
I had the same problem with my A901 about 7 years ago.
I dismantled the thing and found the printed circuit board on top of the motor was all black and nasty.
I don't have much electronics knowledge but luckily worked at a University where there was a man who did !
He identified two capacitors that had exploded. He supplied the numbers/values of them and I ordered them from the departmental store.
I've since retired and forgotten all the fine details but I fitted the new bits and it has worked well ever since. The bits (capacitors) were only pence each.
Hope that's of some help. Don't throw them away yet !!!
All the best
Brian
Brian
January 2008