When its off i hear a faint (louder when i get close) beeping noise mixed with like a spining-wavey noise. Like beeewwweeewwweep, and it does that disc or no disc. Only when its off. There still is a beeping noise when on, but its fainter and i assume that’s normal. When i unplug the power cord to the ps3, it stops (prob normal but wanted to point that out).