Battlezone Boards

[CDB]

I have been struggling with my main board on Battlezone.  The board was resetting, fixed the CPU socket. Then I found out that the programs are bad.  I used a braise kit to get the game to to come up enough to start a repair. All was looking good.  I changed 3 output chips, and 2 char chips,  and got the game to come up and work.  After a few minutes it died and locked up in bad state machine. Now the main board is locked up into bad state machine. The sound is not working at all.  I looking for the boards that work, the rest of my machine is solid.  I just cant get around this last step.