My 2000 chevy Blazer was

I have had my 2000 Chevy Blazer for over two years now and have never had any problems with the radio. It was in the shop a couple of weeks ago to get the front right fender replaced. Ever since i got the car back which was about two weeks ago, something is wrong with the radio. It does not catch any stations, they are all extremely fuzzy and you can't hear a thing. It will not even scan stations because there is not one to stop on. What is wrong with my radio and could it be at all related to the work that was done on it when it was in the shop?