With the help of tutorials on youtube I came out and I was able to fix it
As said in another post, at one time my PS3 was no longer turn the disc. Be careful going up the black case cover that contains the carriage started by max out the left side!
So I am very satisfied! I take the subtleties mentioned in another comment:
1 / check out the trolley number of your PS3 before ordering (you never know)
2 / Be careful to position pieces of white plastic that manage the rotation of the disk when you go back (see specific tutorials KEM-410!)
3 / full view several tutorials before you start! depending on the drive, make the disassembly and reassembly is not the same.
