Il Mio Problema
The old optical drive went out in my friends PS4
La Mia Riparazione
The repair was flawless and quick as long as you have the Tox secuirty bits a little time and possibly a can of air depending on how long your friend has had the PS4.
Il Mio Consiglio
Expect it to be dirty when you up them up during this job. Outside that this is about as easy as it gets.