American Shuffleboard Scoreboard Repair Help

[plumislandsam]

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

 

[HudsonArcade]

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.

 

[plumislandsam]

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.

 

[HudsonArcade]

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.

 

[plumislandsam]

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

 

[HudsonArcade]

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

 

[plumislandsam]

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.

 

[HudsonArcade]

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.

 

[plumislandsam]

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.

 

[plumislandsam]

I have found someone who understand vintage electronics who wants to take on the challenge to fix it. He not familiar with the scoreboard and how it is suppose to operate. I been trying to figure that out myself. I have been jumping the wires as I do not have the switches or coin box. I was hoping to maybe a doorbell switch.

Any insight on the coins box is suppose to operate and where the problem might be base on these symptoms would be greatly appreciated. I also include some videos showing the board operating.



There are 4 wires, red, blue, black and yellow.

Start up/Game Set up


1) I turn the switch on bottom and it lights up and runs through what seems to be a boot up process with a beeping noise. This all seems normal.

2) When I jump the yellow and black one 1 coin gets registered in the red digital box and 15 gets registered in the score/game box. It also beeps every time I jump it. I assume then the game would be played to 15 points. When I jump it again it shows 2 coins and a game to 21. When I jump it a third time some times it back to 15.

Other times when I keep jumping it goes to 51 and 3 coins shows up and it registers 2 players in blue box. Sometimes the beeping noise just stays on like it stuck. Sometimes 4,6 7 coins shows up in red box when I keep jumping it.

I was hoping someone could shed some light on how the coin box is supposed to operate.
Is it only games to 15 and 21?
What suppose it happen when put in more than 2 coins?
Does it recognize how many players are playing?

Start Set up

Start Set up

Scoring/Clearing Game Scores

I assume that when I jump the red or blue wires with the black it going to add scores to the red or blue players box until the score of 15 or 21 is hit and the game over lights up. Is it suppose to clear the score itself?



What happening is when I jump the red white it adds scores to both players. Points are not equally added. Then it hits 15 or 21 the game over lights up. When I jump the blue and black nothing happens. The only way I can clear the score is jump the yellow wire with black which takes it back to 15, 21 etc.
Scoring

Scoring