hmm, if its faulty you might be lucky to get a replacement, who did you buy the chip from? Some ppl will do a runner :| or just not email you back.
But if yours works, I mite be tempted to do mine myself, as I know (no offence meant by this) I can soldier better than that as I have been doing it for two years. But didn't want to risk messing up my ps2
But I spose I could get a cheap ps2 off ebay or somewere and give that a go, and then if it works, sell it and buy another chip...
hmm