Whirlpool ART 722 US Fridge Freezer. The freezer only freezes on the bottom basket and does not freeze the rest higher up. The bottom of the fridge is cold but nowhere else. I have tried de frosting it for 48hours but there was no improvement when turned back on. Is it to do with gas? or pump? anyone know? Can it be repaired or should I buy a new one. It is around 10 years old

Peter, July 2011