Troubleshooting Williams 6 Master Display Issue

(Topic ID: 233620)

Troubleshooting Williams 6 Master Display Issue


By PinballGurus

11 days ago



Topic Stats

  • 16 posts
  • 5 Pinsiders participating
  • Latest reply 3 days ago by PinballGurus
  • Topic is favorited by 1 Pinsider

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34814A1B-BE19-4F0D-A412-6051F0A4AB84 (resized).jpeg
Williams_Master_Display_Schematic (resized).jpg
Williams Firepower Master Display Board.pdf (PDF preview)
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#1 11 days ago

Having an issue with segments for remaining balls not working. Strobes 7 & 8... I have 4.5 volts coming in on the plug and there’s voltage to the glass, but no segments. Am I to assume it’s an issue with the glass or could it still be elsewhere?

#2 11 days ago

Are any other digits missing on other displays?

#3 11 days ago

Anyone have a schematic for only the system 3-6 master display?

#4 11 days ago

Nope. Only the master display. The two digits next to the credits.

#5 11 days ago

The ones to the right of where it shows 23 credits.

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#6 11 days ago

Have voltage to segments on display and it lights up.

#7 11 days ago

I'd imagine either the display glass has issues or it's a connector issue. But two next to each other seems unlikely. Do you have a logic probe or anything?

#8 11 days ago

Repin the three display data connectors on the CPU board.

#9 11 days ago

Does this help?

Williams Firepower Master Display Board.pdf
#10 11 days ago

Williams_Master_Display_Schematic (resized).jpg
#11 11 days ago

I would say that either IC 4 or IC 1 is broken.

#12 8 days ago

Thanks for the information... I’ll let you know what I come up with soon. The schematics will certainly help, mine were terrible.

#13 7 days ago

Here goes nothing... Chip was nearly as much as the display board. Wish me luck.

34814A1B-BE19-4F0D-A412-6051F0A4AB84 (resized).jpeg
#14 7 days ago

Well, imagine that... it worked. Now can anyone tell me why the other digit is stuck on 22? lol

D44D37C6-F08F-4A51-A9EF-D9FCADD10175 (resized).jpeg
#15 4 days ago
Quoted from PinballGurus:

Well, imagine that... it worked. Now can anyone tell me why the other digit is stuck on 22? lol
[quoted image]

Because there are 22 credits on the game? Turn off free play and see if starting a game decrements the number. Also, if you have your game set to award credits for specials, etc, the number will increment even if on freeplay.

#16 3 days ago

It worked. Thanks for you help everyone!!!

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