I have read through threads about weak satellite signals and have a specific question. I have multiple HR 20 HD-dvr's. Last week I started having trouble on one particular line. All of a sudden, the dvr in the bedroom wasn't working. It's not the box, I switched it to the kitchen and it worked fine. The kitchen one had the same problems in the bedroom. Very low satellite signal, it dances in and out, goes from acquired to not acquired and back again. I never get a picture. The readings when I check the strength are low 50's and below. I want to ask if it could be anything but a problem with the cable, as it's gonna be a pain to run new lines. Every other DVR in the house has strong readings, 90's +, no issues. It's just that line. (I currently only have one line running in.) I have everything connected with a 6x16 multiswitch. Could it be that particular port in the multi that went bad? Or would it have to be the cable itself? I plan to go up in the attic over the holiday so I can try and troubleshoot. Didn't know if maybe I should try switching the cable from one output to another, if that was even a possibility. Thanks for the help.