Two days ago the cooker would not come on and so far have been unable to find the cause. It is powered through the same wall switch as the hob...and the hob works fine. There is mains power into the unit and if I bypass the thermo switch that runs the cooling fan (not internal oven convection fan) then that cooling fan starts up. When I turn the function selector switch into the oven position or grill position..nothing happens..no light neon, fan ...nothing. Both elements have infinite resistance to ground ( not shorted to earth) and both have 30Ω or so between terminals..so elements seem to check out. No contacts seem to be burned in any way Thermo switch in back of oven is showing continuinity What is going on here?