(Topic ID: 205965)

Joker Poker stops during play

By glengarrygr

6 years ago



Topic Stats

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Linked Games

#1 6 years ago

Hi all! After working fine for some time, my JP stops during game randomly. Then it restarts to zeros and Ball 1. Any quick suggestions to try?

#3 6 years ago

Clearing to Zeroes and placing the game at Ball 1 sounds like it is seeing the start button being pushed. Does it put up a single player game with the 1st player display flashing a 00 to indicate its ready to play a new game (at least I think that's how a system 1 shows how many players have been set up)?

If its doing something other than what's described above, it sounds like the CPU is crashing in some way. What are you running? Original Gottlieb MPU? Original Gottlieb power supply? If original power supply, and NOT just re-starting a game, I would suspect its time for a re-capping of the PS and replacement of any molex pins.

Did you check to see what the regulated 5 Volts is at the MPU? There are two larger Axial lead caps over on the left edge where the power comes in. One is across the 5 volts, the other across the -12VDC. 5 should be around 5.10. No less than 4.95.

#4 6 years ago

Read the system 1 articles on pinwiki.

They are a great source to understand and bulletproof these machines.

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