S-video issues....

[Incinerator]

ok, I am trying to watch tv shows from my comp on my TV through s-video but I'm having some problems. It used to work a few months ago just fine on this TV, but now it will only display black and white. I thought it was the cord at first so I tried a different one and it still only showed black and white. So I tried a different TV (not my own) and the picture came through just fine, in color. So there must be a problem with the TV, I just have no idea what?

Any ideas?
Thanks