what i would guess is that one of your LEDS grounded out on some shielding, the psp has a buttload of shielding.
another thing, i personally dont use the magnet wire, if that is what you are using.... the resin comes off of it quite frequently causing shorts and failures. i only use that in extreme cases, or places where there isnt metal for it to ground out on.
good luck, and check for pinched wires!