While you wait for answers, we may have found some information which could help you.
Click here for Cooker Oven Faulty
The power goes on and off?
Bypass timer on Stoves Oven 720EF?
How do I remove broken metal part of oven bulbs?
How to remove square glass oven bulb cover in an old Stoves range cooker?
stokes ceramic hob problem?
My bottom oven is overheating the top oven ?