I just bought a used PS2 Slim and it has a MOD chip installed. The game came with a bunch of games and while some play, some don't and the screen rolls. I did a bit of reading and found out that the HZ rate must be switched from 50 to 60 and vice versa. I have 2 questions. Is there a way I can tell what type of MOD chip I have installed, (without opening the case)and 2, how can I change the HZ rate before the game starts up and rolls. Some games I can see thorugh the scroling and managed to change it, but some I can't seem to do that with