(Topic ID: 151721)

Gottlieb Sys 3 - Slow matrix scanning..

By Coyote

8 years ago



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  • 6 posts
  • 4 Pinsiders participating
  • Latest reply 8 years ago by Coyote
  • Topic is favorited by 1 Pinsider

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#1 8 years ago

So on my Nudge-It (Alpha, Sys-3), I've noticed that it seems to scan the switch/light matrix *really* slow.

SO slow that the game will completely miss switch activations from the ball, and a non-ghosting LED will flicker because the on/off duty time is so long.

I'm not that familiar with Gottlieb, so was wondering.. is this normal? Or do I need to check and look into an issue?

#4 8 years ago

Thanks guys - Force, will check those and grab pics tonight.

#6 8 years ago

Hey guys -
Okay. The crystal is 4.0Mhz. Neither the driver or MPU board has been worked on - nothing's replaced. Pictures attached (if anyone wants a closeup, let me know..)

I forgot to mention the following -
The driver board is *not* original to the game - all other boards are. The driver board is from a different game - not sure which one, but it's all original. (Unfortunately, I don't know of anyone near me that has a different board for me to try..)
The ground hack/mod has NOT been done to the game.
Half the time when the game's turned on, a reset line is stuck high. I have to flip it off, wait a second, then turn back on.

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