Yesterday while I was driving my CX-30 there was a loud beep and then my stereo stopped. All of the controls still worked (channel selection, volume, etc.) except there was no sound. I checked the audio fuse and it was fine. When I turned the car on again after I had been at my destination for a couple of hours the stereo came on fine and all was well, except that 5 minutes later it did the same thing -- loud tone then no stereo for the remainder of the trip. Anyone else experience this?