TV issue

I’m at work right now, so I can’t produce a screenshot of the problem, so I’ll try to describe it as best as I can.

Basically, there’s a dark vertical line on my HDTV…I don’t know if it’s burn-in or what. It only appears when I turn on my PS3. I haven’t checked if it occurs on my PS2, nor have I tried playing any movies. I don’t see the black mark when everything is off and I get the blue “no signal” screen.

I have a Samsung LNT3242 (I think that’s the right model).