Yes, brand matters. Not knowing what you are using leaves everyone speculating when we might be able to give you some known trouble-shooting tips.
However, I missed the part where you said it did work with one of the connections. It is most likely that this will turn out to be the only working satellite TV connection. That's how most are setup. There should then be a way to send the signal from the living room to the bedroom via coax. That might be a 2nd coax port in the same area that the working coax comes in or you could have a video switcher that sends outputs to various locations.