Why are 2 translucent lines scrolling up screen (ATI card)

[GreatSinatraFan]

When watching cable and broadcast television on my computer through the ATI All In Wonder 9000 Pro; there are 2 not quite visible translucent lines about 2 inches apart scrolling up the television screen.

These lines are also visible when capturing as well.

This problem is visible on MOST broadcast and cable channels; although the problem does NOT exist on a few channels.

WHAT is CAUSING this to happen; then, HOW do we FIX the problem?

Thanks for any help.

[The village idiot]

Sounds like a ground loop hum bar. Do a search in the capturing forum for ground loop or hum and my user name.

[GreatSinatraFan]

Thanks for your advice ..I did some research regarding Ground Loop Hum Bars... and; at this point.. I'm pretty sure that's exactly what's causing my problem. Now; the problem is how to eliminate this pesky irritation.

Some websites recommend using a shorter cable between the cable wall outlet, and the computer. Others have suggested plugging the monitor into another different power strip than the computer is plugged into; that's also plugged into a different electrical wall outlet.

Then again; I might even have to break down, and go get a Ground Loop Hum Bar filter. The problem is that those babies can cost anywhere from $60.00 to $100.00; that's serious money; 'specially after Christmas.

Oh well.. Life is never easy.

Any other suggestions are welcome. Thanks again !~

[lordsmurf]

It's a long-shot, but try either FM TRAP or DC BLOCK (coax filters) from the local Radio Shack. They are like $2 each at most. Also, use RG6 cable, not that cheap RG59, and make sure it is thick insulated and gold plated. It may just be noise on a bad wire.