Yesterday i thought that this was just one of the many faults on my knackered 963sa dvd player but have just noticed the issue on my new Pace Sky box. When on a channel which isn't currently broadcasting any programmes, Sky just shows a dark blue background with the OSD strap at the bottom of the screen. With this on screen i can see a series of slightly darker "tiger like" stripes running vertically across the screen. They don't quite reach the top of the screen. I also noticed these via dvd on both scart and component when viewing a black background with the contrast set slightly high. They do not appear when viewing any of the coloured test screens when in the service menu. Any idea what might be causing this?