DK, it could be a number of things. If you're getting a BSOD (Black Screen of Death) when loading you may want to check the 3.3V power connection to the chip.
I had several *hiccups* BSODs etc. I got through most of them, by the slow process of de-soldering the entire chip, making sure the PS2 operated normally i.e. boots games with proper audio and video ?.then checking the solder points, and cleaning shorts. It was a week long process for me? I went from soldering n00b to ½ decent. I can say that the most important solder points are the power and ground. If you short anything on the board, you most likely won?t have the ps2 working correctly. ?but you probably won?t kill it.. they?re pretty hearty. People can give you better advice if you post a picture of your install.
PS2 v 7 NTSC |DMS4Pro/ToxicOS 0.41 | 500GB Maxtor HDD | Sony Network Adapter
Xbox v4 NTSC | Xecuter3ce w/X3 LCD | 500GB Maxtor HDD | XBMC