Springfield, MO
That title is perhaps a touch dramatic but here you are so maybe it worked. In the process of fixing up my Grand Prix I've run into and subsequently fixed a number of issues however I feel as though more and more are popping up and I'm honestly at a bit of a loss. I'll begin where the most recent issues popped up.
1. Left Sling – In replacing the coil for the left sling I got a little over-zealous and ended up popping the solder lead out of the stand-up switch. I replaced the switch and soldered back the appropriate wires. I had assumed this was causing an entirely separate issue that is number 2 on this list.
2. Top Eject Saucer – About 50% of the time the ball lands in this saucer the game goes into an infinite kick-out loop where each eject saucer constantly fires. This can be resolved by hitting either of the slings, hence why I assumed the issue was being caused by the broken sling switch. Guess not as it's still occurring.
3. Scoring – On player 1 no matter the state of the game the right most chime will never sound, however, the chime will work on player 2. For reference there are no game sounds when drop targets, pop bumpers, or spinners are hit. Further, the 10,000 score unit coil on both player 1 and player 2 buzzes seemingly constantly during active play. Definitely more pronounced on player 2, although I believe this is buzzing the far right or largest chime coil as well.
4. Player Index – I cannot for the life of me get the game to cycle to player 3. The ball will drain over and over again and the "2up" light will flash off, "1up" light will flash extremely quickly and the game will index back to Player 2. Drain again, same cycle.
Of note, the tens unit coil on player 1 and player 4 need replaced but have not yet been soldered back into place. I don't think this is of note as I have the reels placed in the zeroes position to eliminate the infinite loop when starting a game. Also, I've blown the game out with an air compressor as someone had suggested to me once as a potential fix.
Further, a scoring/chime and leaf-switch assembly (see photos, first is game start & second is game off) is staying energized on game start. I think this is the root of the scoring issue (#3) but I can't figure out why it's staying energized.
I have to think this is something simple somewhere that I'm just overlooking but with so many issues that are seemingly random my brain cannot focus and solve one issue at a time. I need to go through and check the resistance of every coil in the game to make sure that's not the culprit here. There's some rogue buzzing from a coil in the cabinet (I think) that I can't track down.
Any help on any of these issues would be greatly appreciated, or hell even a "this is how you fix it idiot" would be great. Thanks!
