I have an HR54 at my home I got a hr24-500 to use at another location. The second reciever works if the hr54 is plugged into the split2mrv. But when I unplug and take it home. I get a Error 775 and cannot locate SWM. What can I do to get the 24 to work at the other location on its own. The second dish is a SL3 LNB. RB/Intl:reverse Band switch type swm tuners dual. Thanks