I have a great, very low mileage 1994 Grand Marquis. This weekend I was listening to the radio and the sound just stopped. It does not matter how high I crank it up, there is just nothing. The dial lights up, but I also found that when I hit the seek button it just runs through the loop of all stations and never stops on one. Any chance there is a reset button, or a fuse, or...am I going to go radio shopping?