Last night I was using the S-video output on my 622. I noticed thin white streaks going across the screen diagonally. It was especially noticeable when I changed channels and the screen is black. But I also can see it when watching a show. The lines are extremely thin and white. I had the 622 set to 720p. (I would think the S-video can only pass 480i). Can anyone suggest what might be going on? Thanks.