01-29-2004,05:45 AM
I do not think that's possible. Even though the wrong chip was in the console for a short time, the chip cannot do anything permanent to the system. Once a chip is removed, the default settings/bios of the PS2 will always get resurrected, if you will.
To confirm this, I'd remove the power and ground wires from the chip and see if your problems still persist. Hell, I'd pull the whole chip out, verify that there are no bridges/splashes, and see if the problem is solved. IF it isn't, the problem is the console. IF it is, the problem was the install, and you're free to try it again.
The fact that you're hearing ungodly sounds from the laser puzzles me. I'd like to suggest triple-checking points b - i, but I've screwed them up quite well in the past and not had your experience.
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