If the warranty included any kind of a deadline for service, then the company has until that deadline passes, but no longer. If there is no deadline, then they have a "reasoanble" time, and it's when that seems to have passed that you might take action. Of course, if they don't voluntarily act (e.g. fix the TV and return it; or if they can't fix it, just sent it back as it was; or send you a new TV; etc.), you'd have to file a lawsuit against them to seek compensation or force them to honor their warranty obligations. A lawsuit can be expensive or difficult, especially if they are not a local company (it's always a bit trickier to sue someone  in a different state). You should therefore consider whether it is in fact taking action in this case, or whether you may be better off "writing off" the TV and getting a new one.