Probably brushes try here
http://home-appliance-diy.co.uk/motors.html
Neil, February 2014
If the door lock is ok, you will need a main module. We stock them at 59.88 + 6.00 postage (exchange). Have a look at our site at www.emwelec.co.uk or call us on 01159652118
www.emwelec.co.uk, February 2014
could just be a faulty door lock but lots of other things could cause the issue.without testing difficult to say