How long should a cooker last? We had a new cooker and hob installed 2 and a half years ago. Tonight when we put the oven on, there was a flash inside it, and the whole thing switched off. Changed the fuse which got the clock working and the oven seemed to be ok, but it is not warming up at all. Should i contact Flavel or go back to the kitchen people who purchased this on our behalf and fitted it when they fitted our kitchen.