This is what happened. My sister had to get a new battery for her car and when it was taken out the cd player stopped working, there was no power and not even the security light flashed. So i took it out and thought to check the fuse, i took out the 5A that was in there and replaced it with a 15A as this was the closest i had to it but it didnt work so i put in a 30A and it worked again. I cant understand why this happend.