I just bought a 2007 Mazda 3. I was listening to a CD and switched to FM mode. The radio had absolutely no sound. Mute was not on, and turning up the volume had no effect. I switched back to CD and the sound was fine. Switched back to FM - no sound, FM2 - no sound, AM - no sound. Pulled over and turned off car. Checked to see if antenna was loose - it wasn't. Turned car back on and radio sound had returned. Anyone know what happened?

 

Shorted out I would guess. I'd just swing by the stealer and get a new one!