OK be kind, it's sentimental. I grew up playing Star Explorer at my Grandparents house since the age of 5. I just happened to be browsing on craigslist and found one seeming to be in decent shape considering it's cheap sears quality.
Anyway, I got the thing cleaned up, sound working all solenoids are firing well. Only problem is the scoring. It counts from 100 - 900 then resets to 00 again in a loop. When holding the reset button 88800 is displayed but never when playing. When the game is turned on it will display a higher score until it's reset. I'm guessing it's just a bad solder joint or something stupid like that but to troubleshoot I'd like to test the counter. There are a few IC's labeled 165-1, I can't find them anywhere to cross reference. Only thing I could find on them based on the logo was they were manufactured by solid state scientific. They appear to be a 7 segment driver of some sort but without a data sheet I'm not sure of the pinout to test the them.
Anyone happen to know of a replacement IC or seen a similar problem on these?
Thanks!

Thanks, I've been looking around for a few days now and that's where I pulled most of the tips to get the machine where it's at. I've checked all the solder joints and they are fine. Need the data sheet on the IC's.