smeg duco4ss top oven/grill stopped working?

Hi there,

Our SMEG DUCO4SS top oven/grill has stopped working. The top oven no longer heats up neither does the grill element or the internal bulb illuminate. The thermostat light no longer illuminates either. The air circulating fan does still come on however.

I have tested the internal bulb which is fine so it would appear to be some sort of power issue.

I've had a look around the net and the selector switch was mentioned, would this make sense?

Thanks in advance.