I have a 622 which I have had since last April 06 and have had it hooked up to my Plasma with a HDMI cable. No problems what so ever. Yesterday I decided to hook up my new DVD recorder and I moved some cables to clean up the look. I also unplugged my HDMI cable from my 622. Guess what? Now I can't get it to work and when it does I only get video never any audio!! I went and hooked up some component cables I have and the video comes in just as good as the HDMI does on HD. The only thing I don't have is audio and I am assuming that I need a "optical" audio cable? Not sure. Audio and video come in just fine when the recorder is on. I have 2 HDMI plugs on my plasma and the Direct reciever I have works well on either connection so I know it isn't my monitor. I have to go to town and buy the audio cable but wanted to make sure I get the right one. Last night I called Dish and I went over everything with a Tech and we came to the conclusion that my 622 needed to be replaced. The only problem is I have quite a number of recordings which I don't want to lose. If the the components work well and the audio works well then I probably will cancel the replacment reciever and just keep mine until it really bombs!