have a swm dish single wire to 8 port sw,1 hd dvr, 2 std d-12 w/ bpf installed. the H 24-700 is the only rvc that freezes and pixels, all others have no problem.I have changed out this h24 with another one and same problem happens? ran new cable from dish to switch and even moved the h24 to another room and have same problem.I did notice the h24-700 feels warmer than the other rvcs.one thing I had to do was use the original access card.but I don,t see how that would effect the picture? I don,t know what to try next but to get another H24 rvc.any ideas will be appriciated Thanks.