After you've paired your Fios TV Voice Remote to your set top box, HDMI connected TVs and Audio systems should automatically be detected and be controlled by your Fios TV Voice Remote.
tried it and it doesn't work. Just got it about 3 weeks ago and finally got around to setting up every tv. For some reason it will not pair to this one tv. Could be a faulty remote, and I don't want to pay to buy a new remote.