Pick up a prestine balley fireball 2 . Have owned this pin before and sold my last one trading for upgrade.This pin looks as new and from what i can tell cant find any evidence of ever been worked on. It worked for a few weeks then quit. Problem is now will not start up. It does turn on and all lights fire up but game will not take any credits or will not deliver ball to shooting slot. Mpu board flashes correctly 6 times so don't believe problem is there . Test switch on door does not fire solenoids . Capacitors I know can dry up over time and they look original .do you think that is where to start . Any ideas to send me in the right direction is greatly appreciated .