hi,the bottom half of my fridge has started to freeze my food and the top half of the fridge is not chilling as it was,the same condition applies to the freeer side of the fridge,i had a look at the fan in behind the casing in the freezer side of the fridge and it was no turning,could this be the problem and does this fan chill the fridge,is the fan controlled by an internal thermostat and could that possibly be the problem ,any help would be greatly appriciated,regards karl