I have an HR20-700 in my study and I'm feeding the composite out up to my dad's bedroom. He fell and hurt his back so he bedridden. I setup the RC34 for Rf operation and it works fine, that is the remote that is usually used with that box. I have several RC64s laying around so I tried to set one of them up but after I do all the programming, M&S 691, Vol. up, 926069 Sel. all I get is one flash on the remote not 2, and the receiver generates a "Thunk" error and nothing works. I've tried doing a 681 to clear the remote and that does not help. Called D but they knew less abut this than I did. Downloaded the .pdf from D on the RC64 folloed the directions there and still the same problem. What am I doing wrong? Need your help!