just had the cooker man to fix exact same problem on our cooker. He took off back panel on cooker,one of the wires running down back housed a thermal fuse (it had a red rubber sheath around it which he removed)he rejoined the wires minus the fuse and the rear rt ring and oven started working no probs.He is coming back to put a new thermal fuse in tomorrow as it is a necessary safety feature.
anne-marie
March 2009