American Shuffleboard Scoreboard Repair Help

plumislandsam

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I have a vintage American Shuffleboard scoreboard I am trying to repair ( see pictures attached).The scoreboard was coin operated. I do not have the switches or coin box. I was going to use doorbells to operate it. When playing around with wire harnesses that went to the switches the board ends up going haywire.
So I think I have some type of internal fault I will need to fix.

I am not familiar with the how the board worked so I looking for help on how the board operated.


1) When playing around with the yellow wire and black I can get the number 15 or 21 appear in the game over box. So what triggers the game of 15 vs 21?
Was it coin driven ?

2) Once I started to trying adding scores to the red or blue team using the red, black and blue it starts going haywire. So since I can go through finishing the game can some tell me what happens on the board when someone wins?

I getting a technical help to fix it so I just wanted to know what to expect when It is operating properly. I also looking for any wiring info that might be available.

Thanks
 

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Post a good pic of the other side of the scoreboard so we can read the chip #s.
Shouldn't be much to it.

Chances are the board doesn't do a good job of debouncing the switches and your switches are really bouncy.
 
Attached are a couple are photo's of the circuit board. I did find out that the original owner said was not working properly when it was attached to the old switches.
 

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Looks pretty basic -- didn't notice the CPU and ROM from the back side pics.

Looks like the board is mainly (cmos) 7 segment decoders and transistor arrays to drive the display.

With the CPU to poll inputs, debounce is prob done in software -- looks like the switches at the top are the equivalent of dip switches.

First step is prob to dump the ROM and try to verify it.
 
This is way above my pay grade:(. Been trying to find somewhere to get it repaired. Does anyone have a suggestion where I might be able to get it repaired? Preferably in Massachusetts or New Hampshire.

Thanks
 
If the ROM is corrupt, it's probably not repairable -- unless you can find someone with a working board to dump a good copy.

You should have dropped the board off when I was at Treehouse Tewksbury last Thursday :)

Been meaning to get over there to try Hopothecary -- haven't been to Oak and Iron in a couple years :(
 
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Have not been to Treehouse yet, but will soon now that they know no longer limit you to a couple of beers. Not a fan of Hypothecary but do like Oak and Iron.

Do you repair these types of things ? If so how do I get in touch with you. I see that your in Hudson.
 
Have not been to Treehouse yet, but will soon now that they know no longer limit you to a couple of beers. Not a fan of Hypothecary but do like Oak and Iron.

The old 2 beer limit at Charlton was a bummer, but after a couple pints of 9% baltic porter, you really don't need another pour.
The real problem is having a tap-list 60 deep where you can never get to try anything (less in Tewksbury).

It's worth the trip just for the pizza, but they tend to char the crust slightly too much -- it's more consistent at Deerfield.

Do you repair these types of things ? If so how do I get in touch with you. I see that your in Hudson.
I doubt you'll find anyone who's ever worked one of those, but it's a simple enough design that if the ROM's good, it's fixable.
If the ROM's not good, then it might need to be reprogrammed from scratch, which isn't impossible, but prob not worth the time/effort for a one-off board.
 
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