Hi, Started to notice problems with my TV on white backgrounds - I could see what is best described as horizontal bars on the image. Thought it might be inteference from another source, so tried disconnecting everything, swapping cables etc.... but still the same. Decided the other night to use one of the THX Optimisers to set up the Contrast,Brightness etc to see if that made any difference. First test ran fine, then I ran the second test, where you should be able to see the THX logo, and 10 shades of black above and below it. Even with brightness set to full, I still could not see the THX logo, and at best could only see 5 shades of black. Are the 2 problems likely to be related ? Is it likely to be terminal, or should it be fixable ? I've only had the TV 2 years......... Any help greatly appreciated. Ian.