I just aquired a Gottlieb Black Hole pinball. When powered on, i get the famous Gottlieb system 80 power on "thunk", all play field lights come on, a couple seconds later all score displays come on and alternate back and forth from 000000 to last high score. It's at this point the ball gate cycles open then closed over and over(main play field) , while this is happening the lower play field relay cycles on and off over and over again. The start button does nothing, so im unable to play a game.
Ive check all fuses, and checked all contacts in case something was stuck in the closed position. I've also checked all connections and re-seated just in case. At this point im not sure where to look next.
Does any have any idea what could be wrong or suggestion of what else to check?
Any help would be greatly appreciated.