As I am writing this, I am awaiting the BEKO engineers for the 3RD time, to attend to this exact same fault. My cooker was bought last June and first went wrong after 40 days..the engineer came and informed me that as soon as the fault was reported, he knew what it was as this is a known fault with these cookers. He replaced the thermostat, which took less time to do than it took him to remove the back of the oven, showed me that both oven and back ring were working, and left. I put my dinner in the oven and lo and behold, within 20 mins the thing went again.. this time I was without an oven for 3+ weeks..now I will allow tomorrows repair to take place only on the proviso that if it goes again I will insist on my money back as obviously, this article is not fit for purpose and I will go to British Standards if I have to..I suggest that all other owners of these cookers take the same route.....good luck......
KAY, February 2011