Extend the warranty and wait the required 30 days before you claim. So far that's the cheapest repair path I know of.
I purchased a Samsung 55" LED TV UN55EH6000 in 2013.
Two years later the LED panel has FAILED and it shows a dark horizontal strip on the upper 30% half of the TV screen.
I would avoid Samsung LED TV products in future.
Disappointing that the LED screen failed in 2 yrs considering that such products should last much longer!!
Tried contacting them, however it seems I am out of warranty. But IMHO I think LED Panels should have a longer lifetime