My AEG 74620 packed up & gave a C9 fault indication. It turned out to simply be the motor brushes that needed replacing. The (non) AEG engineer that I used, checked things over & there was nothing else faulty. The circuit board hadn't blown - everything was fine. However, he couldn't clear the C9 error display on the front to enable the machine to work again. Any suggestions please? My guess is that there is a comination of buttons to be pressed on the front of the machine, which will reset it. Surprise, surprise, those awfully nice people at the AEG Service Force Centre, are not wanting to enlighten me. I think they would like me to spend £65 on a call out. I'd rather not.