(Topic ID: 324428)

No flashers.

By HIPPY

1 year ago

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3 posts
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Latest reply 1 year ago by DumbAss
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Linked Games

Road Show Williams, 1994

I recently did a playfield swap, and afterwards the entire game works, except all the flashers. I just purchased the game, and believe they worked before. All plug-ins have been checked several times. The fuses have not blown. I have repinned connectors J114, J107, and J2 on the auxiliary board. When you ground a transistor on the auxiliary board, we got flashers. I bought a new auxiliary board, hoping that was it. No flashers. All voltages test good on the cpu. Pulled cpu, reflowed ribbon cable hookup, replaced all ribbons. Only thing I can think of is the U4, but, don’t know. Has anyone dealt with this before? Thank you.

EDIT - Nevermind - EDIT

It's Road Show. The game is linked in the post. All the flashers for Road Show are controlled by the 8-Driver Auxiliary board.

First thing to do is check the orientation of the 26-pin ribbon cable from the CPU board to the 8-Driver Auxiliary board. The red stripe on the ribbon cable indicates pin 1 and should align with the silkscreen for pin 1 on both boards. When installing also check you don't install the ribbon cable off by one row.

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