Just finishing up a Jokerz! And my last issue is there is no speech (call out) and missing a few sounds, such as the draw bridge sound). Music plays fine as well as scoring sounds. When doing the sound test via the switch on the cpu 3 dongs (?)which the manual says is a U4 issue. Just want to make sure there isn’t anything else I can do/check before ordering one. I have reseated ICs, reversed ribbon cable, checked power (+5, +12, -12, all good), and checked connectors and pins. All those appear to be good.
The main issue with this game was a badly corroded cpu. I cleaned it all up, replaced parts, headers and connector pins and the game plays well except for the missing speech. Can anyone give any suggestions to try besides getting a 68B09 chip, and if you think that is in fact the issue?