the element, has blown , by the sound of it , see if you can see the element.,( BUT) have the power (OFF) when your looking , the element should be next to the fan , in the back of the oven ,. and the back wall should screw off , to reveal the element, you will know if its blowing, bu looking at it , , if so just replace it , thir around , £50, thats what i payed for mine , ( make sure that you have the power fully" off ) . or get somebody to look at it for you ,
mick, April 2009