The second tuner on my HR22 DVR is not working. Tuner 1 works good. I have a SL-5 multiswitch LNB. I'm using flat cables to run the two cables through my window & to hook up to my HR22. I changed the flat cables out,checked the hook up to my DVR to insure neither cable was loose. I checked the cables all the way to my dish & they were all connected tight. I'm getting excellent signal strength through to tuner 1,it's just all zeroes for tuner 2. Any suggestions? P.S. I have downloaded the last two CE updates,but I'm not sure if that would have anything to do with losing signal on tuner 2.