PS2 won't boot PS2 games in CD format

[arrowflash]

The console enters PS1 mode when booting PS2 games in CD format. PS1 and audio CDs work fine though.

Machine config:
Slim PS2 SCPH-75001
Matrix Infinity Green Dot 1.75

Hi guys, I'm having a very bizarre problem with my PS2. Basically, my PS2 won't boot most PS2 backups in CD format, only DVDs. PS1 backups and audio CDs work fine though.

Games tested were 18-Wheeler, Ferrari F355 Challenge, Half-Life, Sega Rally 95, Silpheed, R-Type Final rip, Street Fighter EX3 and Gradius 5. Of these, only Street Fighter EX3 and Gradius 5 worked fine, the rest won't boot. The PS2 will recognize the disc as a PS2 game and tries to boot them, but it hangs at the black screen or returns to the Browser after about 10 secs.

I've tried re-burning the games that didn't work, even used different brands of CD-R media (tried Sony, TDK, Maxell, Imation), so I don't think that's the problem - even more when we consider that the two games that work, have booted and ran perfectly since the first try, also consider that I use the same media for PS1 games and audio CDs with no problems. I've also tried rebuilding the images using all the proper tools, converting these games to DVDs, getting these games from other sources... nothing works.

The odd thing is, the PS2 sometimes recognizes the PS2 CDs as PS1 CDs. But even when they're recognized as a Playstation 2 CD, seems like the machine enters PS1 mode to run them. Crazy, huh? I guess that's why they're not working.

I don't think I'm doing anything wrong, If I'm doing something wrong when burning these games, I have no idea what it could be. I always burn my media at the slowest possible speed, using Alcohol 120% or DVD Decrypter, a LG GCE-8520B drive for CDs and a LG GSA-4160B drive for DVDs. AFAIK there's nothing different I should do when burning a PS2 game on a CD, compared to a DVD. Could this problem be caused by an unproperly installed / soldered chip?

I wonder, could this be a bug in the current version of Matrix Infinity related to PS2 CD games (probably exclusive to my PS2's version), should I report this to the Matrix Team as a bug? Is there any other registered occurrence of this problem before? I've already given up, but even if you guys don't know a solution, I'm open to suggestions and opinions.

[mabcom]

Looks like one of your Dvd controller points is not soldered correctly
i guess A or B

that psx and audio cd's works fine seems to make this for sure
Psx and audio cd's don't need that the dvd controller is patched because the authorising crack for the psx is done in the bios

when your Dvd points are oke
you could also check near the scex connection for splashes or removed component because if you mix up something there strange symptoms can occur with Cd based games

For sure i can tell you that it is not a bug in the infinity firmware because i have already done hundreds of the 7500 serie

with regards
MABCOM

[arrowflash]

Thanks a lot for the reply mate.

But what about the two PS2 games that work flawlessly? That's strange, after all logic says if this was the case, then not one single PS2 game on CD would work... right? Homebrew PS2 software burnt on CDs work fine as well. These other games didn't work even when I converted them to DVD.

Anyways I'll check out your advice, thanks a lot. Too bad I'll have to take my PS2 to a technician to check this out, I bought my PS2 already modded - I have no idea what you're talking about when you mention "scex connection", I never opened my PS2 and I don't even know how to solder stuff.

At least the store's warranty is still valid, but whenever I take any electronic device to a repair technician, I'm always afraid they break something else trying to fix the problem. Oh well.

[joe123]

Hi man I'M looking for sega rally 95 ps2 jap and it's really impossible to find !

somebody can help me ??!!

Thank you !!

[Bootlegninja]

Best I can tell you is to try ebay.