I’m a long time pinball owner and have had success in many fixes. I’m stumped on one issue on my Bally Star Trek that I cannot resolve. The “High Score to date” lights no longer flash at all when the high score is displayed. I’ve checked connections back to the lamp driver board and could not get voltage on Q15 which I replaced and still cannot get a reading on the new one. I’m looking for suggestions on where to further check what feeds into Q15. Many thanks!