Have you verified that you can, or can't, get standard stations like
WWV (5, 10, 15Mhz)? How about the AM broadcast band in your area?

That's the first thing I would do -- particularly check that you can or
can't get WWV on 5 or 10Mhz at night.

It could be as simple as a mode problem -- you have the radio set to FM
or SSB but are trying to receive broadcast shortwave (which is AM).

What kind of antenna do you have on it?

greg