Ok, so I just installed a Magic V onto a v5 PS2. The installation looks neat enough, and I even checked it a few times after problem first occured.
Here's the situation:
1. No backups will boot, cdr or dvdr.
2. Originals will boot.
3. I'm pretty confident of my soldering skills to not have a bridge somewhere. I didn't screw up.
So what do you think is the problem here? A defected chip? Or is the laser finally coming to its end? I'm waiting for an answer. Thanks.