This happened to me too. The problem is that digital tv needs a strong signal. If the signal is week you will see nothing at all and it will say just what yours does (that the program will return shortly). You need to call for service. They can put a signal booster on your line. That fixed it for me.
thanks for the advice. My TV is the analog type and I started getting the “box” a couple months back when I found I needed
it for my DVD recorder. The thing is, of course, it’s not just a few channels that go out. It’s all of them. You see the
display telling you what channel you have on and what
program, but just a blank screen and no sound.