Original DUO in v4 gap = no dvd backups
Hi, just finished installing a DUO (first version) on a v4 gap NTSC PS2 and the results are:
Original DVD movies work
Backup DVD movies don't work
Original DVD PS2 games work
Backup DVD PS2 games don't work
Original CD-R PS2 games work
Backup CD-R PS2 games work
Original PSX games work
Backup PSX games work
So, basically, only backup DVDs don't work, whether movie or game. The DUO modchip is genuine (bought from www.foundmy.com) and worked flawlessly on my v5 NTSC PS2. And I have cleaned the laser lens with a Q-Tip and alcohol.
So, I'm wondering if it's the laser or an install problem. If it's an install problem, the only points I could suspect are A, B and I on the DVD Controller since those are the hardest to get a good bond on without bridging the adjacent pins. But then the question becomes: is it possible to mess up one of the A, B and I points and still have the PS2 boot original movie/games and backup PS2/PSX CD-R games, just not backup DVDs?