(Topic ID: 145040)

Pinscore Displays MMPM... Fixed!

By Hop-Pac

8 years ago


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#7 8 years ago

After reading all this, the problem statement sounds like;

When player 3 is connected, the other three displays show bad information.

Correct?

And you rotated all displays into slot 3 and the problem stays with slot 3?

And you are correct, most old Ballys did not use ribbon cables to the displays. That does not rule out an issue on the CPU, but you state 2 MPU's. What was the original problem with the glass displays that made you update? Did it have the same problem?

1 week later
#34 8 years ago
Quoted from Hop-Pac:

I've noticed during the display test from the coin door, that some of the playfield lights are blinking. Seems to be random, not the same ones every time. They are all LEDs.

Unless you installed some sort of LED support (resistors, Altek lamp driver, etc,,) you will get flicker/ghosting on Bally.

Quoted from wdennie:

I had same game with the same pinscore problem, what you need to do is un-daisy chain the displays, I can't remember which wires, but each display has has one wire specific to that display even tho they run to all the displays.

And there is your fix. Time to start looking at prints. I don't have a Pac set handy. Maybe tomorrow if I get time I'll look at the display wiring.

#39 8 years ago

Once I have 5 minutes to myself, I'll do the homework and let you know what needs to be cut/changed.

#43 8 years ago

I've done the same. Just no time to analyze. On my todo list.

4 weeks later
#45 8 years ago

Printed out all the parts of the manual pertinent to this, sat them on my desk and forgot all about this thread. DOH....

I'll try looking when I get home tomorrow.

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