I couldn't get a live tv signal on my Roamio after I moved. I think it was working when I first set it up but then it stopped working. Everything on the Tivo worked. Just couldn't get a live tv signal. I tried switching cables, etc without result. Then I switched the Tivo with another Tivo from another room. The new tivo worked fine on that connection but my Roamio still can't get a signal. I conclude there is something wrong with the port on the Roamio. What am I missing? Could that port be replaced for some reasonable amount? Thanks.