The drum on my Miele W715 washing machine won't turn ?electrical fault?

The drum on my Miele W715 washing machine doesn't go around. I have turned it by hand from inside and there is still resistance. But in normal operation although the electrical unit 'clicks' as if it is going to turn the drum, the signal obviously doesn't get through. Sounds like a connection fault in the circuit board. Miele booked me a service slot but then postponed it for 5 days.