My Electrolux Er7626B fridge not working -small area frozen on top of insulation pipe cover behind grill at back.
I cleared out fridge freezer and defrosted for 4 hours then restarted frost patch at back melted and dried.
I stated it up again and this section about 3cm began to freeze agin.
The fridge appears to be working but has still not reached right temp.

Martygrad, December 2010

from your description it does sound like you have a gas issue (lack of it) or there is a partial blockage in the pipework but its dificult to be 100% without seeing and testing it really.expect repair bill of £100 plus if you do want it repaired for the above type of fault

ck, December 2010