Hunt means that the stb is not getting any incomming signal
Things to check.
1. make sure that the incomming cable is connected to "RF in" or "fios tv in"
2. make sure that the line is actually connected to verizon service
3. make sure you are using RG6 cable and not the RG59 cable, and that there are no non verizon splitters on the line.
Now if all the above check out. Then the next thing to do is take that box to one of your other tv's that already work, and connect it using those cables. If it works, then the problem is on the line in the other location. If it doesnt work then the problem is the stb itself and you will want to swap it out.