The oven is around 3 years old, and I have already had to replace the circular element on the lower oven a year and a half ago.
This afternoon, we had set dinner in the main oven on a timer, whilst we were out.
When we got in, oven dead, MCB tripped out, no dinner. Re-setting MCB - big flash in MCB, tripped out again, Hmm. Turn oven off, re-set MCB OK. Try other elements on oven. OK. Try fan element again ( expecting MCB trip ), nothing, no trip, no heat. Diagnosis: stuffed element, shorted as it died, fault now self-cleared. Fair enough. Will investigate later.
Decamp dinner to lower oven, cooks OK. We go to make some other stuff to have for midweek, and mid-way through cooking, bang. MCB trips, oven off again. Double Hmm.
Time to investigate. I'm concerned there's some other fault, not just a dead element. I'm not a great believer in co-incidences.
However, it does indeed appear that both elements have died identically within hours of each other. Bizarre. Each has a small melted hole at the point of failure ( as often happens ). Each is now open-circuit end-to-end ( and also to earth ).
The ovens were not overheating. Check my computer UPS logs: there was no over-voltage incident logged.
Just a random near-simultaneous failure. Odd, but there you go.