Disk will not eject
My daughter put a DVD in my playstaion while I wasnt around and now it will not eject the disk. When I press the eject button it makes a terrible noise.
The problem you are having is likely caused by the small white piece that sometimes comes dislodged from the inside of the optical drive.This post shows it well
And, as Diana Chu said you can also remove the disc manually if needed.
If you are looking for someone to fix it there are several businesses here on ifixit that can help you with that, including mine.
I hope this helps!