03 Expedition factory radio dead

I have a 2003 Expedition with a factory radio/cd player (not the 6disc) and yesterday it went dead. The clock, the lights, and the cd eject motor still work but the radio and cd wont play. I checked three fuses in the fuse box related to "radio" but none of them are burned out. What can it be? Any ideas? The radio went out while I was in the car, so no water damage or any unusal damage has occured.
I hate to buy a new radio if this one is repairable. Is there a reset button I don't know about?

Any help would be greatly appreciated.

Thanks!!
RV