My ps2 im guessing is USA Fat version 9 its code is SCPH - 50001 and its data code is 4C. I'm getting errors when I try to play cd-r games i've tried 3 different medias (Sony/verbatims/some crappy best buy) all are coasters and i've been able to play these before. Games are Final Fantasy VII/VIII/IX and codebreaker and action replay for PS2 not PS1. I got my ps2 modded by some shady guys in a foreign country and this is the first time i've opened it after 3-4 years of it being modded. I didn't see them mod it so It's hard for me to figure out what chip I have without opening the ps2. I'm thinking they've swapped parts as well i don't see the giant ribbon cable i've read about on many guides, also my cover for the laser well I can't find the four screws on it I can only find two. Please help.
I also hear a grinding noise only on one backup though.