hello. i'm having some trouble with my oven, it seems to work fine but then after it's been on a while it completely cuts out - the fan stops and the light goes out and it starts cooling down. i suspect there's a problem with the thermostat and that the oven is possibly overheating and cutting out for safety reasons as it does work again once it has cooled down. the front bit of the oven where the dials are is getting very hot. the oven is an electrolux built in oven. any ideas of what's going on and how easy/difficult it is to fix?