It is warrantied by Woot for 90 days. If there are problems you have to pay to ship it back which will cost you over $100 I suspect.
You can find the link at the bottom of the description but here is the part that you should be worried about.
I don’t know if you can get the square trade warranty on this or not but that is the only way I would ever buy a refurbished TV from woot. I guess a lot of people have no issues but with my luck I would be the one that gets a TV DOA.