I just recently bought myself a new Philips 20" Flat Screen TV but im having problems with it I think unless this is normal, anyway here it goes, When I watch certin Movies or play just about any game the picture changes in the top right corner of the TV and some times the bottom right but never the Top left or bottom left, what happens is the picture is not even with the viewing area of the TV it's almost square until you get to the top right corner and the picture bends inward. Can anyone help?