I have read several posts regarding late model TVs that lose Verizon's signal. My new TV is Samsung 52 in. 750. The problem is sometimes when I turn the tv on I get no signal or while watching tv the signal gets lost. Verizon wants me to use broadband cables. Or just do as I always do (again as per Verizon instructions) power down the tv and verizon's box from the wall and wait for a few minutes. Then power up the verizon box first and wait until the time resets and believe this or not turn back on the verizon box. The Verizon box turns itself off after you initially turned it back on. Then turn on the TV. Then I will get the signal.
Of course Samsung blames Verizon. Actual Samsung responded to me saying that several of their customers have this problem and that Direct TV works with the Samsung 52 in. TV with no reported problems.