Double line when watching dvd's-please help

I have seen a similar artifact in a friends CRT set up. This was a very thin line running from the bottom of the screen to the top of the screen slowly. It turned out to be a ground loop problem. It seems this is the video equilivant to the hum we hear in the audio portion when cable tv boxes are not properly grounded. Just a thought, hope this helps.
Dave

Ground Loop, yes. It's either cable being of different ground differential or it's from having different grounds from components(possibly due to differnt circuits for your gear/video stuff. Anothe cause could be if you're using a different power source for some of your compoents(I.e., PS Audio powerplants and power generators for some, then using straight into the wall for others. I think if you plug all your stuff into one circuit to check(including video display and gear) you should see problem go away. Good luck

Hi I posted this thread and think I was misunderstood. It is not a line from the top of the screen to the bottom. I see a thin black shadow line around any and all objects (people, trees, anything in the movie) I notice it with dark objects against a lighter background. I am using a Richard Gray power conditioner. Thanks.