Grand Slam
Gottlieb, 1972I recently picked up a 1972 Grand Slam Project. It needs a bunch of work, but is worth bringing back to life. While cleaning the contacts, I noticed a wire is disconnected from a contact on the score motor. Can someone verify which contact I should connect it to? I think it is the one on the far right in the photo. I currently do not have schematics
It's probably a wire that shares a switch lug with another wire. Look for a switch lug that has bright solder, which might show a broken, shared solder joint. Also, other Gottlieb machines of the same era might use the same wiring color for the score motor switches. So, using other available schematics might help with the wire location...
Quoted from fredsmythson:It's probably a wire that shares a switch lug with another wire. Look for a switch lug that has bright solder, which might show a broken, shared solder joint. Also, other Gottlieb machines of the same era might use the same wiring color for the score motor switches. So, using other available schematics might help with the wire location...
Sorry, fredsmythson I normally agree with your advice but looks like there's a first time for everything. Soldering this wire to another one without understanding why is risky at best.
Thanks for pointing this out, @howardr. I don't think I said to randomly solder a wire to another wire. I was just saying to look for clues to where the wire might have disconnected. I should have explained this better in the previous post. Sometimes a wire can get disconnected and it will leave a solder indentation, which might match up to the wire that became disconnected... But, the best way to troubleshoot this would be with the machine's schematic. Hopefully, someone will post information about the Grand Slam schematic...
Thanks for clarifying, fredsmythson
Quoted from fredsmythson:It's probably a wire that shares a switch lug with another wire. Look for a switch lug that has bright solder, which might show a broken, shared solder joint. Also, other Gottlieb machines of the same era might use the same wiring color for the score motor switches. So, using other available schematics might help with the wire location...
I have looked at the switch lugs to help indicate where it was disconnected, but it is not clear.
Quoted from Sodacrack:I have looked at the switch lugs to help indicate where it was disconnected, but it is not clear.
Is the game functional/playing? If we knew what was broke you can then find the lead on the diagram. or somebody that has this game.
Quoted from pinhead52:Is the game functional/playing? If we knew what was broke you can then find the lead on the diagram. or somebody that has this game.
Yes
Quoted from pinhead52:Is the game functional/playing? If we knew what was broke you can then find the lead on the diagram. or somebody that has this game.
I am still checking and cleaning contacts and steppers. It has been sitting in a warehouse for about 20 years and everything needs to be gone through. I should be able to try a start up this weekend
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Cincinnati, OH