Head to samsung.com and register your set. That usually gets you 3 more months of warranty and then you call it in.
My TV is turning itself on and off. First the screen displays a vertical or horizontal color pattern then the screen goes black. this repeats over an over. The remotes have no control over the TV so I have to unplug it to get it to stop. I purchased the TV from Frys Electronics in Houston, TX on Sept 6, 2012.