Arcade Collecting > Miscellaneous Arcade Talk
SkeeBall Identification
PinWiz:
Glad someone else is looking here. I don't need a sound board but instead a display board. Got the game all working but no display. If anyone has schematics that would be very helpful. Short of that just some close up photos of the display board showing what ic s are used on it so I can build my own. Need to know if the CPU is sending bcd to each digit or if something else is going on. Any information on the game would be extremely helpful.
Kershawesome:
I'll try to get some pics of mine when I get to my shop today or tomorrow.
neald:
Pinwiz, there are (5) SC141D triacs and the lower portion of the power supply board used to drive the lamps and solenoid, maybe the ticket dispenser. I can't remember but I think the middle triac was the solenoid. 2 to the right were win and display lamps I think.
PinWiz:
Thanks for the input. My problem is several, but the main one is I do not have a display board (for the scores). I am trying to figure out how the system drives the lights for the display so I can build my own. If I had schematics it would be a breeze, but I can't find much information on these machines. What I have gleaned from what is out there is the display board uses 7448 (common cathode 7-segment decoder/driver) for the scores and the output of those goes to dual drivers (8-pin ics, I've forgotten the number) to drive the lamps themselves. I won't need those in my design since I will use 7447 (common anode 7-segment decoder/driver) and LEDs for the scores. In the picture of the display that has been posted there is another chip that is un-identified. I am guessing this is the chip that drives the 10 balls played lights. I would also guess it is probably a bcd to decimal chip. I have no idea how the DP (decimal point) is driven or what it is for. I am guessing this has something to do with giving a visual indication of out of tickets but I don't know for sure. I have been tracing the wiring from J6 and J7 on the card cage to the pcb connectors. It appears that the cpu latches the data via the 8255 PIAs and that is what goes to the display drivers on the display board (which I don't have). I have not figured out yet which pins from J6 and J7 are for which digits. Anyone have a clue and can help? Schematics would be so helpful here or some close up pictures of a working display board showing both front and back so one could see what wire colors are attached to where on the display board and the J6 and J7 connectors on the card cage. The game seems to play fine although I have other questions since I have never played one and don't know how it is supposed to operate. I have the music set to play Popeye but it only plays when you first boot up the machine. Is that the only time you hear it? Seems odd to go to all the work of programming all the different kinds of music and you only hear it when the machine it turned on the first time. My 110 volt lights in the head seems to work okay and flash when they should. Does the game play if the tickets are out? Mine plays okay and the ticket dispenser runs even though there are no tickets, is that normal? It counts the balls played okay and resets when 9 balls have been played. If there a way to turn off the background noise that grows louder the more points you get? Can you change it? Are there settings for the music it plays for the point switches? Is there a way to adjust the number of tickets? As you can see, I have lots of questions but the main thing is to get the score to show up! Help! I would really like to learn as much as possible for these games and document it all to help others out when they have problems.
neald:
I will have access to a new never sold 10 footer that has been our family since the early 90's. It has been in storage about 4 hours from my home. As soon as I get a chance to transport it and get it running I can start to help you out with the questions you have. Right at the moment we are moving into another house and awaiting a closing date. So the FAB U BALL will have to wait a little bit. I will keep you posted.
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