When I run a straight s-video signal from my reciever (for switching and on screen display) to my tv the signal has a lot of artifact, grain, noise (I'm not sure how to describe it) that runs horizontally all over the television. First I thought the reciever might be introducing the noise so I ran a composite cable from reciever to the tv and it was fine. I then kept the composite hooked up to the tv but used an s-video/composite adapter plug, to plug the other end into the receiver's s-video out, the picture was fine. So then I thought it might be the tv so I did the same thing in reverse. I ran a composite cable out of the reciver and used the adapter to plug it into the s-video input of the tv. It was fine again. Maybe it was the s-video cable itself i thought so I tried running three different S-video cables directly and all had the same noise in the video. So it seems for whatever reason the noise only presents itself when I run an s-video cable from receiver to tv. Any ideas on what it could be?