I have a 60 GB North American PS3 with hardware PS2 backwards compatibility. When I put in a PS2 disc and try to play it, the PS2 logo shows up, but then it goes to a black screen (sometimes with artifacting on it, like a strip of white snow/pixels at the bottom). If I play around with the controller, it sounds like I'm moving through a menu (clicky menu select noises) on both games I tried (Okami and Yakuza 2). When I hit the home button, nothing happens. I have to shut down the PS3 and restart it to get back to the XMB.
It plays PS3 games, Blu-rays and DVD movies fine. A while back (close to a year) I had it sent in to be repaired for the YLOD, and after that I hadn't tried any PS2 games until now, but this is the first time I've noticed any sort of problem with it since I got it back.
Is there anything I can do on my end before I beg Sony to try and fix it again?