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 .

Ok after read you suggestions I stand corrected. It does start up but does not deliver ball in ready lane . I went and repluged all pin connection to mpu board and solenoid driver board and did get game to now allow credit. I had game working for short time also but now went back to not delivering ball to plunger but still can regester credits. When wiggleing pin on solenoid driver I do here relay clicking . I think first thing I'll do is pull solenoid board and resolider pins.
My experience is that I can solider fairly well and have rebuilt some boards on older pins . Tauagt myself how to test transtors and resistors and use pinwiki for much of my learning guide. Been in hobby now for just over one year now and have 5 pins. Biggest problem I have is trying to figure out is where to look for what to fix but have no problem fixing once I know what need fixen.Any suggestion much appreacitaded as I know some of you are way more advanced in this hobby then I ever hope to be.