Car battery trouble

[miami32]

I wonder if you guys could help me with this. I have a chevy blazer 2 door I think 2003. I parked the car and turned on the hazards. When I came back about two minutes later. I turned off the hazards and tried to turn the car on again. Nothing but a clicking. The lights were dim and that radio didn't work. I got the car jumped but the radio said LOC on it and didn't work after it was jumped or when the car went dead. We did positive to positive and neg to neg. It turned on fine but what happened to the radio? Is it possible I fried it? Or could the battery dying ruin it?

Any thoughts?

PS-the battery is not that old, and there has been no other trouble with the blazer at all.