INFINITI I35 RADIO NOT WORKING

Hello: I Have A 2003 Infiniti I35 With The Nav Package. The Bose Radio Is Different With The Nav Package, Since The 10 Cd Player Is In...

The Radio/cd Player Suddenly Stopped Working. The Power Button Does Not Push In. Could This Be A Fuse Or Do I Need To Take To A Shop?

My Radio System Is Temperamental. It Works When It Wants To. The Cassette Player Worked Then Stopped For A While Started Up Again Then...