Please be more specific.

Do you mean that you can't switch to the radio at all? Make sure you have the version 2.0something software, because some of the 1.somethings didn't have tuner support.

If you have 2.0something and you don't have a "Radio" menu on the main menu, then it might be a fault in the assembly. The tuner should be automatically detected and you should get a Radio menu.

If you mean that you have trouble with scanning for the next station, click here.