Need help with my '92 Sentra radio
 

Hi all. Just bought a used Sentra and the AM radio doesn't work. It's pure buzzing and static. It's the factory radio. Am I better off going to Best Buy and getting a new radio put in or is there a "reception booster" I can buy? I'm probably going to have the car for as long as it runs. I just miss my sports talk radio. The FM works fine.