New Life Games Tech Forums

I have question on a three coin bonus frenzy bally 6000.  I have two bill acceptors and both will cycle and the green lights will come on the door.  neither will take bill in. When I open the door the red light appears.  Everything works except bills.  I just got this machine from a trade and have never seen it work so I have no history.  I have two IC's missing on main board U24 and U55.  There both have empty sockets.  Was wondering if anyone has a idea what they are for?  I usually have IGT's or Bally 5500's..  I have did a ram clear and the acceptor is a WBA 12/13.    Diamonddot