You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
Museum of the Game® & International Arcade Museum® Forums
I really don't want to re-invent the wheel if possible...
I have a board (actually Tutankham) which has multiple 4116 failure... I think something traumatic must have happened to some of the power rails in its past.
I am thinking of replacing the eight 4116s in a row with a static ram and some latches but obviously there is a certain amount of complexity with the timings.