Thanks for all the hints on this topic................helped enormously in fixing my son's blower which was only working on setting 3! We eventually managed to fix it for 65p and a bit of time and patience. It is a LHD model and replacing the resistor panel was going to be nearly £50! ( surely there is no difference in the electronics?). Solution was to take the panel to local electronic retailers who sold me the correct rating
in-line fuse. We cut away the old one on the back of the panel, soldered in the new one, lubricated the bearings and were back in business. Still working up to press (1 hour after fixing!)
