OMG !! It was the red button I can't believe I was lucky enough to stumble across this thread whilst searching wk767 spare parts ... I was looking to pay out £40 + and then found this.
Found the red button situated in the centre of the back of the dryer ...pressed it & now my dryer is back working good as new.
Whoever 1st gave this valuable advice THANK YOU !!!!!!
Laura
November 2012