I have a 2002 Audi a4 1.8, I have a problem with my radio it won't turn on at all. I took the fuse out number 39 and I can hear the radio doing some type of noise and then I put the fuse back and nothing happens. So I disconnected the battery cables waited for a few mins and then connect the cable again and still the same issue. What else can it be? Can it be the fuse on the back of the radio? But I don't have the keys to pull out the radio. So I need help to figure out this problem need my music back lol thanks