Hello everyone. I just recently purchased a Space Odyssey that was “fully functioning”. After a week or so, I’ve run into a few issues that I’ve been able to figure out. This latest problem has me stumped. I’m a novice so just looking for a direction. Now for the problem.

It’s fairly simple to explain but I’ll try to also explain what I’ve already tried in the troubleshooting process. At the end of ball, when the bonus counts up in scoring, it sometimes comes up 1000 points short or gives 1000 more than it should. It consistently falls 1000 short when the bonus is set to count 10k. It falls 2000 short when set to count 20k. Sometimes it counts accurately. Ive checked the 1000 score relay and it seems to be fine. I’m thinking the bonus unit but I’m not sure where to check. It seems to be “skipping”. This happens for 1 and 2 player score reels so I’m thinking it’s not the reels? Sorry to be long winded and thanks in advance!!!!

I’ll check this when I get home, again, but I can actually see the score not count as the bonus is dropping down. I’ll know before it’s even done counting if the correct amount will be tallied or not. Should the bonus reaching zero be resting on the contact or should it be off if it slightly? And which motor switch are you referring to? The cam switches?

I guess what I’m saying with the previous post is that I don’t believe it’s resetting too soon because it usually misses count well before it nears the end of cycle. Somewhere in the the 3000pt bonus range.

So I'm pretty certain the 5000 point works correctly everytime.. It looks like in your image the little "pin" is resting on the stack? Is that the Game Over position? Because when my bonus unit closes that contact, solenoids pulse and then it falls back off of the stack one notch leaving the stack open during game over... What exactly would be the issue with the bonus unit if that was the problem? I cleaned it up somewhat on the spider side with qtips and alcohol and removed quite a bit of black residue... Thanks for your help btw...

Ok. Yeh. That’s what mine is doing. So the spider only controls the lights?

Ok... I'll check the cams/cam switches when I get home... Thanks for your help, much appreciated...

Ok. So I checked the 5000pt scoring rq when I got home and it’s not tallying that correctly! Is there a certain relay for that? Just asking as I don’t have time to look through it tonight.

Ok. So I was actually able to dig a little deeper and get a photo of the stacks touching the cams. The 5000 pt stack tooth doesn’t seem to have a lot of wear. The impulse stack tooth does have lots of wear. It controls the 1000pt impulse correct.

Now. For the 5000pt scoring pattern. Every other time the tally scores correctly. Exactly 5000. When it doesn’t score 5000 it scores only 2000. So that scoring pattern is consistent throughout several cycles.

Could the 1000 point scoring cam have an impact on the scoring??
Also. Those contacts are a pain to get to without removing everything. Any suggestions?
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Ok. Another update. Sorry for the spam. So I ran through a few 3 ball games testing the 1000pt bonus.

First game: 3000points
Second game: 6000 points
Third game: 3000 points
Fourth game: 6000 points

Is the 5000 point cam even involved with this? When the motor switch isn’t involved, 1000 points scores fine.

Cam 5 wouldn’t be the middle one? Switch A is normally closed? The schematic shows 5000 pt relay to be normally open?

So this big impulse stack is the one all the way on the left in my pic? I’m so confused. This one you’ve posted looks like the one at the very top of the motor cams, far right in the pic.

And it should be N.O?
And so you think the 1000pt pulse is the problem and 5000pt is eliminated?

Ok. One last update before bed. So I messed with the 1000pt switch (far right stack/middle switch) and now the 5000 pt score for the swinging target scores perfect every time. BUT, the proverbial but, the 1000 bonus gives and extra 1000 to score. As a matter fact, EVERY amount I tried on the bonus added 1000 to the total bonus. So 10000 would score 11000, and so on. Now what?

If this is the case, should I tighten the gap on the NO switch or widen it?

My credit unit is disconnected. But I understand what you say when you say that I need to move the leaf switch to open a little sooner.

So I adjusted the NC contact on the bonus unit TOWARD the “pin” on the wheel that engages the stack. I also cleaned out hat first contact a little. It works!!! Thanks for your help.