DNA200 Fire Button Not Responding

[We87]

DNA 200 Board in a metal enclosure with a 1300mah 3s LiPo battery

Had to disassemble my mod today to fix a button issue (metal buttons replaced) and in the process of putting everything back together I laid the board down on the metal enclosure by accident and heard a spark. Very hard to tell exactly what part of the board touched the metal, and which if any part actually blew or not but now the fire button isnt working at all. Up and down buttons work fine, and usb works fine and when I hook up the board to escribe I am able to fire the mod with a atomizer attached. Technically everything is still in working order as far as I can tell, except for the fire button

I have no idea where to go next or how to troubleshoot this because I know the button didnt fail or come loose in anyway, its something with the actual board I am sure. Any tips on what to try next?