I have a 2008 Mazda 3 and all of a sudden the radio stopped working. It is the stock radio not the Bose. THe display lights up and the temprature is displayed on the console, but when I turn on the radio nothing happens. THe fuse looked fine, but I changed it anyway just in case, it did not make a difference

 

I know its been a while but ive just run in to this same issue. Im wondering what happened with your problem and how it was resolved. Its driving me crazy trying to find an answer!!!