get a wire hanger cut it into 2 u shape pices slot them into the holes on the frunt of radio where the 4 holes are put some presure on them and pull the radio from the tape deck just did this today...
It really depends. I am having problems with mine right now. I gave a guy a jump start with my car running (not a good idea, apparently), and fried something..may be a fuseable link or voltage...