This is my second set (50hdx82)from tweeter and both had the exact same problem. When all lights are turned off and a very bright seen comes on cable or dvd (like LOTR beginning of CH 18)I see a faint horizontal line 1/3 of the way down from the top of the screen. It is exremely annoying once you've noticed it. It almost looks like burn in but I know I did not burn in both of these sets on the first day of owning them! I talked to tweeter and they suggest going with different brand since maybe all toshibas have this slight problem. It really is only noticable on very bright seens. I am thinking I am going to fork over some more money and get the mits 511 unless someone here knows a way to fix this problem without changing out CRTs.