Hi, first-time poster to the forums. I just picked up my first pin, a Fireball 1972 (one of my favorites) a month or so ago thanks to the Pinside Marketplace bot. Game plays really great, but there are a couple of little things I'd like to start taking a look at. I know I can grab the schematic from IPDB, but in case these are FAQs for the game, the possibility of a few potential pointers can't hurt.

First issue is around the Player 2 scoring. When the Player 2 score rolls from 1K-2K, 2K-3K, 3K-4K, 4K-5K or 5K-6K, the 10K reel also advances. My first thought was that since there are no targets worth 10K, that the 10K wheel advance was just "mechanically" linked to the 1K reel rolling from 9 to 0. The interesting thing is that in this error mode, it looks like the 10K reel actually advances ~before~ the 1K wheel does. So that would seem to eliminate the "mechanical"/rubbing score wheel hypothesis out. Thinking about it, I guess there was to be an EM way to advance the 10K reel, for resetting it to zero at the beginning of a game. But if the 10K contact was picking up "sympathetic" vibes sometimes from the 1K contact, it's still strange that the 10K reel clicks over first. Any ideas?

The other two minor issues I have are with the Odin captive ball. When the ball ends up in the Odin cup, sometimes I need to nudge the game a little for it to sense the ball's landed there. I don't know if there's a plunger switch or something there that needs a little lubrication. The other issue is I guess there's a motor or servo that drives the Odin bonus indicator light from 1K to 5K. I almost hate to score a ball there because that motor/servo sounds like it's lined with sandpaper. I'm hoping that the area that needs treatment is obvious, but I'd be curious to hear recommendations for what I should use to clean/lubricate that area. I know there are "contact cleaner" and "no contact cleaner" camps, but it seems like when it comes to moving parts there has to be something most folks agree on to keep everything moving smoothly.

Thanks guys, you were spot-on with the "9-position" switch diagnosis. I pulled down the schematic to help me find the switch (by wire colors), and the gentle application of long-nose pliers after making sure the switch stack was tight fixed it right up! Will prolly lift the playfield to look at the Odin issues over the weekend.

Also just picked up a Blue Chip which may need just a little TLC, so I've got that going for me.