dealing with the same issue with LG fridge not cooling after 4 years. one repairman said it was a block, another said it was the compressor and the third repairman said the compressor works fine, it's probably a leak in the sealed system or i need freon.....Never again with LG...I ultimately got my money back but want to fix this fridge as a back up...any other ideas.....was thinking of getting some freon in and see how long it lasts..