I had Direct installed 1/9/11. One of my TV's is a Vizio 47" LED. A couple of weeks after the installation, the HDMI #4 port that the H24 is connected to displayed "No Signal". I moved the HDMI cable to HDMI #1 and all was well. Nothing I connected to HDMI #4 would work. Always "No Signal". A few weeks later, the HDMI #1 started displaying "No Signal". I moved to HDMI #2 and it worked fine. However, I'm afraid to leave it connected for fear of eliminating all of my HDMI ports. I have a computer and an XBox connected to the 2 remaining ports anyway. Anyone know of a problem with any boxes damaging HDMI ports? Or, is this a Vizio problem. The TV is out of warranty, so I'll have to pay for repairs. If the H24 is causing the damage, Direct should have to pay for the repair IMO.