I'm working on a Gottlieb 2 player soccer. It will not start, when I hit the credit button the start relay pulls in and then releases, I get a large blue spark across the orange/white or it maybe orange/yellow and white/blue contacts. I know you will see a little spark but this is large as if there is a short somewhere. The hold relay will engage sometimes. The tilt hold relay will not energize. Also the credit unit does not take a credit off when you hit the credit button. The reset relays don't start either so it cant clear the score reels. I'm usually pretty good with em's but this one has me, thanks for any help.