If you hookup a set of "rabbit ears" to this television in question, do you receive anything? Your post says the TV works when it's attached to cable so it's obviously OK.
However, I'm not sure what you mean by the term "video box". Is this the Set Top Box (STB) for the cable TV, a digital to analog converter box or something else? Do any of your neighbors have outdoor TV antennas that are mounted high in the air on towers. If so, that could be an indicator as to why you're not able to receive any channels (and a good reason as to why you have cable).
If your TV is an old analog receiver, you're going to need a digital/analog converter box between the antenna and the set before you can see anything.
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