TV Troubles

[carlos]

Help me please!!- Can anyone tell me why, when I watch a programme on my 21' tv, I sometimes get horizontal lines, each about 1mm thick, and about 5mm apart, starting at the top of the screen, and stopping about a quarter of the way down. At first I thought the TV was on its way out, but it only happens on certain programmes- It can be fine on BBC1 but not on BBC2 at the same time etc. It only seems to have started happening since regular widescreen broadcasting began, and the same problem doesn't occur on my 32' TV. Do I need a new TV?

[lisaj]

It could be what I call 'rebound'. On computer monitors you can adjust the vertical and horizontal positioning: two far in one direction, and it would 'rebound', with a faded, reversed version stretching back across the screen in the appropriate direction. The TV equivalent could be that only the very top of the frame is being warped this way, and on certain channels you get black spacing at the top and bottom, hence any warping would be there, but invisible. Your best bet is to have a TV shop look at it, but it's probably going to cost an arm and a leg.