The main element is at the rear of the main oven space around the fan. To access it you need to take the chrome shelves and side supports out, then unscrew the large bolt to the right of the fan (all from the inside). To remove the element there are 2 small nuts on the rear (main back panel to remove first) plus a cross head screw on a supporting bracket (underneathe the element inside). A replacement element will cost £15 (or £45 for a SMEG replacement) from somewhere like ebuyer. Please note electrical isolation and manual handling considerations.
Duncan
June 2010