I have no experience with car/truck audio, and my 1990 Blazer has a dead radio

I push the power button and nothing happens. That's pretty much the full-story here...before I take it in I'd like to try it myself, so if anyone can tell me where to start that would be appreciated!

 

First things first, check your fuses. I'm not sure which ones go to the radio but your fuse panel should tell you.