My NEFF D9970 cooker hood has stopped extracting!?

We can switch on the hood, the lights work, but when you choose one of the three settings for extraction, nothing happens. Any ideas of probable cause? (fan, motor, internal fuses etc) How do I get to the offending item???
Anthony, August 2006
Did you get an answer or a fix? As I have exactly the same issue!

JD, October 2007
link Click here to see other fixes for Neff.