Need Help! SFAC Stick not responding!

I am new at this. Just found another sfac stick in local store and decided to pick it up and mod the stick and buttons w/happ competition parts. It’s the 8v pcb aka the shitty one, also the one that isn’t mapped out on arcadestickmonk’s guide. So while testing it on the ps2 to figure out what wire goes for which button I accidentally knocked a transistor. It didn’t come off but now nothing works.

replace pcb with MC Cthulhu or hack a ps2 pad.

I thought about doing that but I would have to wait til I get some extra cash which would be for a long time. Was hoping to see if anyone knew of some way to test the transistor to see if i screwed the pcb completely.