Been getting some occasional searching for sat 2 signal messages on both by HR20 & H20. I called Dtv and they said it may be a problem with cables, etc... I have run through and checked everything, even ran a entire new cable to my H20 because it had a corroded end. My standard def Tv in the bedroom works just fine. My question is could this be a problem with either the multiswitch or the b-band converters that I could fix myself. I really do not want to mes with the service department again if possible. Thanks for any help.