What have I fudged up now? Answered
I bought a chipmod pro 2 modchip for my slim ps2. After LOTS of struggleing with a lot of wires (only 18, still quite a few) I got it all together and as soon as I plugged in my ps2, the red light wouldn't come on. I'm sad. I did check my connections over and found a bridge between a couple resistors and a 3V access point for the modchip. I ended up resoldering the resistors back onto the ps2 because I couldn't just scrape it out of the cracks. I have no idea now, all the other connections seem fine but there ain't no red light, any idea?