Big Indian
Gottlieb, 1974I have a game that I could get that has a few problems. One is that it plays fine in 1 player, add 4 players and it gets to player 3 and resets to player one. I would like to have a clear fix to this problem. Any help would be greatly appreciated. Thanks.....
I never can remember which game/year Gottlieb transistioned from a trip relay bank to a coin unit for keeping track of the number of players. I think Big Indian uses a trip relay bank.
First, do you have the schematics and are you comfortable reading them?
If you have the schematics, post a pic of the part that will be about mid way up on the right side. There will be numerous switches connected in both parallel and series that eventually lead to the "Add Player Unit" coil. This is from a Gottlieb Jack In The Box. Your's will be similar. We need to use yours since the wire colors will be different.
GottliebPlayerUnitLogicFromJITB.jpg
I suspect the switch on PB4, with white/blue on one side, and white/orange on the other side isn't opening as it should when PB4 trips. Or, PB4 isn't tripping with the 4th player is added. Note that these wire colors are from JITB. Your's will be different. At least you can correlate JITB to BI to ID the place to look.
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Chris Hibler - CARGPB #31
http://www.Team-EM.com
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The Place to go for Pinball Repair Info
By top rollover, you mean one of the B, I, or G rollovers, right?
Or do you mean one of the "star" rollovers?
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Chris Hibler - CARGPB #31
http://www.Team-EM.com
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The new place for pinball repair info
If none of the scoring is working, there is usually a switch up the right side of the schematics, that allows ALL scoring to proceed.
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Chris Hibler - CARGPB #31
http://www.Team-EM.com
http://webpages.charter.net/chibler/Pinball/index.htm
http://www.PinWiki.com - The new place for pinball repair info
I'm getting scoring now. The problem now is that.... I can add 4 players with credits but at player 1 after I manually or (play the game) add points and let the ball drain it will kick the ball to the shooter lane but wont go to player 2. I can make it go to player 1,2,3,4, manually at the add a player stepper in the backbox and after I complete all 4 players this way it will go to ball 2 and so fourth. When I shut game off and turn it back on the Add a player resets...But it is not working other wise. I think this is my problem....
Ok I think I'm on to it..... Can you tell me please I am not great with em schematics.. On the start motor what stack switch controls the pulse to the ball stepper coil? I watch the machine as it drains on ball one and the coil on the ball stepper wants to move but not getting the power....
The one in the back box in the upper middle. Dirtflipper I have solved that problem of advancing players and balls. Now it only scores 2 to 3 hundred points where it is supposed to be 500 points and I get only 1ooo where its supposed to be 5000 points. Also not getting bonus points but the bonus stepper is working. Thanks for any help....
That's the "Player Unit" there in the backbox. It tracks both player and ball.
For the other issues, I'd suggest picking one issue to focus on first, and follow it on the schematic, checking each switch and relay. Also determine if it's specific to one player, or common to all players (to further isolate).
Quoted from smersh:Is there a definitive path that a not well reader of schematics could know
Probably not.
It's going to be similar to the example up above a ways. If it's skipping players, then that means one or more of the paths to the Add Player Unit is able to complete and send a pulse.
So for example, if it's on a 4-player game, then after each ball drains it should only receive one pulse, to advance only one player. That's because the player relays PB2, PB3, and PB4 should all be tripped and their normally closed switch open, blocking those paths.
If an extra pulse is able to get through, then that suggests one of the switches on PB2, PB3, PB4 is still closed, or otherwise has a short in the path.
Another issue I found with the player unit...if it randomly skips a player is the throw on the advance plunger is too large, I had to shift the coil assy a little closer to decrease the amount of travel. This then yielded reliable advance.
If its always skipping the same players then a closed contact on the add player relays
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Rumford, ME