Bow and Arrow
Bally, 1975Hello to all!
So I'm working on a Bally's Bow and Arrow and I noticed that the pop bumpers are not firing nor are getting power to light the bulb inside them... any clue on where to start? the rest of the GI is working, I thought that the the GI will also illuminate the pop bumpers but I guess I'm mistaken. Any leads?
Thanks in advance!
Best,
~ja
The pop bumper lamps are on a circuit enabled by a 15A fuse, a NO switch on the lock relay, followed by a NC switch on the Game Over relay. Would suggest checking all those to trouble shoot if the pop bumper lamps don't come on in gameplay.
Thanks for your answers! I'll give a try tonight and report! Thanks...!
While in the same (Bow and Arrow) topic, I found one curious issue (another one) the lights for ball 1,2,3,4 & 5 don't light, the same goes as the ones that highlight the player in turn. I remember at some some point these will lit momentarily, but not anymore, aren't these lights controlled by the player unit? the same that skips from player to player? If so, I already cleaned up the contacts of this unit and switching players works without problem. Hmmmm...
Thanks again guys!
~ja
Success! I found a broken wire, fixed it and pop bumpers now work! Thanks to all for your input, yay!
BUT... I discovered something odd... on a +2 player game, player 2 will lit its 100k light when it crosses 20k, this is a score motor thing right? Those things are sooo intimidating for me. 
any leads on what (of all) the stacks I should look for a problem?
Here's a link of yesterday's stream of Bow and Arrow, almost 3 hours of continuos game... as I stated, that was a torture test. 
Thanks again to all!
~ja
Quoted from uncle_jose:on a +2 player game, player 2 will lit its 100k light when it crosses 20k
The 2nd player 100k light turns on when the 2nd Player 100k Trip relay fires. You should double check that that is what's happening. The relevant circuit is:
Bow and Arrow 100k light (resized).jpg
Three switches need to close to get that relay to fire. Starting at the bottom of the schematic:
- the 1000 point relay switch closes with the 1000 point relay fires
- the 2nd player 1000-9000 drum unit switch closes when the 1000 drum shows 9
- the 2nd player 10,000-90,000 drum unit switch which closes when the 10,000 drum shows 9
Or in other words, the 2nd player 100k trip relay fires when the 2nd player has 99,000 points and the 1000 relay fires.
If your 100k trip relay fires when player 2 has just 20k points, the first two switches are doing the right thing and it's just the third switch (in the red box) that's closing early. It could be because the switch inside the drum unit isn't adjusted properly, or there's a short due to a bent solder tab, exposed wire, etc. I'd start by having a good look at the player 2 10,000 point score reel and the switches on it to make sure they're working properly.
Another option would be to let the 100k trip relay fire at 20k, then manually untrip it to make the light go out. Does it trip again at 30k or 40k or any other value before 100k? That might shed a little more light on the situation.
/Mark
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