Along the lines with what boylehome said, do you have a DVD player or another device that has component outputs? If so I'd try that out and see if the problem is still there. It looks like you already tested another cable so it's probably not the cable. That would leave either the TV or the 622. If you hook up another device and it doesn't have the problem I would suggest contacting Dish and explain this to them. If it does show up on the TV from another device you might have a problem with your TV.