Echo that! I have both a 622 and 211 and now I wish I had gotten the second DVR even tho' I really don't want that second fee.
The HDMI problems are well known and in almost all cases due to the rather fragile socket connections breaking free from the circuit board, probably due to "excessive" force on the plug. Ask for a replacement. You're paying for HDMI capability and should have what you bargained for. When you do get a replacement, make sure you're very careful inserting/removing the HDMI plug, and also make sure you off-load any weight of cable hanging down from it. I had to have my first 622 replaced due to a DOA HDMI connection but the replacement has been flawless, and thus far I have had no problems with the 211 (KOW for both!)...