(Topic ID: 281466)

Gottlieb System 1 Start Up Issue

By megoman

3 years ago


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  • 12 posts
  • 4 Pinsiders participating
  • Latest reply 3 years ago by Cheddar
  • Topic is favorited by 1 Pinsider

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#1 3 years ago

Recently purchased a non working Joker Poker game.

Added 1 amp fuse to transformer and ground to power board. Tested voltages on power board and all are OK.

Plugged in CPU and connected first display. when I powered game on the display immediately came on with flashing 000 000 (there was no 5 second delay) which could indicate CPU issue.

I read that both rolling tilt and slam switch need to be closed and functioning for game to boot. I checked both switches and they are closed. How do you check if the switches are correctly functioning.

Prefer to not have to replace the boards on the game unless absolutely necessary.

Many thanks in advance for the feedback.

#3 3 years ago

Meant to include pics of the front and back of the CPU - see below

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#4 3 years ago
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#6 3 years ago
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#7 3 years ago

Slam switch mod worked and now the score displays all work properly.

Connected driver board and no click from the 2 solenoids. Checked the contact pins in the both ends of the connector and they look clean as do the contacts on the board.

As a next step how do I determine if driver board is faulty or if there are further issues with the CPU?

#9 3 years ago

That Sys 1 start up video link you sent has two coils firing when he plugs in the driven board. Perhaps two coils firing are unique to whatever game he uses in video.

Also added front and back photos of the driver board.

Thanks so much for the input and feedback on trying to correct.

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1 week later
#11 3 years ago

Used an MM to check all the repaired traces on the MPU. All appear to be good.

Also checked the traces for all connectors on both the MPU an Driver boards. All appear to be good.

That leaves things as nothing happened when I connected the Driver board and turned on the power.

What next in terms of trying to figure out where failure is occurring? Thanks.

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