My mother-in-law’s Belling XOU 252 SF single built-in oven (approx 2.5 years old) stopped working over the weekend. Symptoms are no oven light, no fan, and no heat (on both oven & grill setting). However the clock is still working. First reaction is that the fuse must have gone, but as the clock still functions doesn’t that show that power is still on, or is there a stand by battery for the clock? Any suggestions as to most likely fault?(hopefully simple to fix)