I was orginally gonna purchase from guy on ebay and I got him down to $150 but then sum1 else listed and bought it for $120...what system do you have? versus,redtent,?

I got it off of Ebay..There's 2 RBI baseball pcb's on there right now

I have a Playchoice 10 single monitor and recently bought a VS RBI baseball pcb to play on it...the boards look very similar and decided to take a chance...Swapped out the boards and voila it works but i have 1 issue...The game powers up and i can pick my teams and controller works except my A&B buttons dont work...I dont know if its the board or i need 2 do something else ...Any information would be greatly appreciated if anyone else has done this or may have a solution to my problem...Thanks