Title says it all, just finished up with a stern galaxy. Everything works except for awarding credits. The match feature doesn't award credits, nor does passing any of the high scores. I replaced the dipswitches as some of them weren't switching correctly. High game to date switches 15 and 16 are both on as is the match feature switch and switch 6 which controls the extra ball or replay.

Everything worked correctly before the installation of NVRAM. I believe I adjusted the audits correctly, however the second and third high score adjustments read oddly. For a high score of 250000, it reads 25_1_1. Not sure if that's normal or not.

Yeah, I had tried that. I had to reset a bunch of stuff, and that's what got the high scores saving but still not registering credits. It turned out there were over 100 credits on the machine. I'm not sure how that happened, the theoretical maximum is 40. Either way, it appeared as 9 credits, and when I kept taking credits off, it went to 0 and then 99. I eventually worked it back to 0 and now everything's working.