Big Game
Stern Electronics, 1980You're currently viewing posts by Pinsider ChrisHibler.
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The least significant bit of the BCD 4 bit signal from the MPU to the displays is not getting to the displays.
This could be the PIA output, header pin, female connector, fractured wire...
Fish out your meter and buzz for continuity along the path.
--
Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/Contact ... for board repairs
http://www.PinWiki.com - The Place to go for Pinball Repair Info
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Chesterfield, MO