Hello everyone!
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!
Tom

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I grounded Q15 off of one of the ground test loops on the board with no success. This is stumping me.....

Many thanks for the input! Turned out to be the pin connector #23. I misdiagnosed it previously as I was getting continuity from the back of the connector to the socket, but when I went to remove it and check it again, it came out in 2 pieces. All is well now!