I just got my 622 installed today. The HDMI worked great for about 4 hours. I tried rebooting, but it has not come back. I hooked up a component cable and have a good picture, but I don't think it is quite as sharp as the HDMI was. I believe it is a software issue. When Dish sends out a new unit, it will work for some period of time until the user does just the right combination of actions or use that mess it up. A new unit appears to fix the problem for some time. I suspect that most will be in the same shape shortly. I hope the upcoming software release will fix the problem. I believe most of us would prefer the HDMI connection.