I'm having this same problem with the searching for sat on my HD channels but not on any of the mpeg4 or SD. This is starting to really get me mad. I was on the phone last night with D* tech department for an hour just to have them hang up on me when he was checking with the dept. supervisor. So now I have to call back tonight with the same issue. All signals are in the 90's for the main 3 sats.