I have bought a Samsung TV 46" model LA46A550PIR with S/N:AKWY3DHQ400657E from a Samsung agent in tehran-iran but parts of its screen come to black and has become useless . The Samsung service here says it is due to TV panel technical problem and they can do nothing for it, i have lost a lot of money and this worldwide famous company dose not consider its customer problems. my email: [email protected] read full review »