I've been having pixelation and signal loss on my 722, meanwhile my 211 upstairs is working fine for my wife at the same time. I had the 722 replaced 2 months ago. Still the same problem. I went around and checked all the connections. I did notice some thing that I think is not right. The dual grounding block is pretty hot, not lukewarm, hot. I'm going to take a stab in the dark, is it a bad LNB? Anybody every see this before?