I have bought my first HDTV lasy week and have been happy with it. I have begun to notice though that in the bottom half of the screen in the center, there seems to be a 'dip' in the picture. if there is a horizontal line running across the screen in this area, the line will run perfectly straight coming from both the right a left hand sides of the screen until it reaches the center where it will 'dip' or bend down slightly.
This causes a rolling effect in this area when viewing scenes in movies where the camera is paning horizontally.
I have not much of a clue what causes this but am guessing it may be a geometry issue. I was hoping someone may have seen a problem like this before and know what causes it before I pay an ISF guy to come out and tells me it needs to get repaired or replaced.