I feel like I always hear this kind of story with a musician and I honestly don't get.
I just don't it never makes sense to me.
I'm also unsure what kind help you are looking for but it never hurts to make a speedrun through RE4
Unplugg whatever it is and take a flathead screwdriver and lift up the tab at the bottom of the socket.
If it's too far down it might not be making the connection it needs too.