I was working on my friends pad and he has the newer Gamestop BB070 pad.
I saw that the signals were the same for Y and B. I ignored it at the time. When soldering and xacto knifing the middle of the X button I apparently cut the trace for A. I tried solderin a blob to patch it, but thats way beyond me. I look at the pic on joystick vault and notice the A and X are the same signal trace as well. So I take the X i soldered and put it to the ground for A and it triggered A in windows diagostics. then i apply the other ground and X triggers.
So for those that may use this controller, here are my “notes”
Down, Right, LB, A, Y - Can use Downs ground for all
Start, Guide - Can use either Start or Guides ground
Up, Left - Can use either Up or Lefts ground
X, B, RB, Back - Can use X ground for all
And note apparently X/A use same signal and Y/B use same signal.
Im wondering what else might have shared a signal like LB/RB. Ill check when im done wiring up the terminal strips. Jeez, this is gonna be ugly and confusing…