Can you tell me if when the oven is turned on the thermostat light on the front lights up?
Ok, thank you.. I have had a look at the wiring diagram for your cooker and it all points to the selector switch for the oven..
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You will need to remove the rear panel, the hobtop, and the fascia panel
Sorry Graham.. That is an old 2002 model and it would stretch the imagination to think that I could remember that far back.. However, Have a look under the fascia panel, if there are screws there it suggests that the fascia may be removable and there may be screws for the top behind the fascia.