[John Candle]

Do the living room walls have a room on the other side that has coax to the room? You can use a two way splitter , one out put of the two way splitter will have a coax that goes through the wall into the living room. Or if the coax in the other room has nothing connected then connect a coax , poke a hole through in to the living room and put the coax through the hole in to the living room . . And no , a loop system does not go all the way back to starting point and connect up at the starting point. . You can also find a way to run a new coax to the living room. A new coax to the living room does not have to be the same route as the one that is in the wall and is bad. It's however you can get the coax from point A to point B.