Hi, Tom.

Have you checked if the condenser fan motor is running and condenser coils are clean? If it's fine, remove the evaporator cover in the freezer and see how the coils are covered with frost. In case if the coils are not covered completely with even frost pattern there is a sealed system problem and you need a professional repairman or if it's an old fridge consider other options :rolleyes:

Thank you and keep us posted.

Best,

Simon.