Radio does not light up or work...

My 1997 avalon xls radio stopped working years ago and does not light up, however, my heating controls, clock and other buttons around the radio light up and work. I have read the user manual over and over again as well as read so much into this and I cannot find a single person with the same problem as me. The fuse is not blown and I read that there is a 3 digit security code you can use to reactivate the radio if done right? Everything in the car is original meaning no aftermarket parts, I cant stand having no radio and cant help but wonder if resetting the security code will make the radio work again? Please help, I'm a 31 year old woman who works full time and doesnt know too much about these kind of things. Thank you