So dumb me... I was working in my machine with the power on.. something hit something that it should'nt have and now all the lamps on "Row 2" are stuck on.
Game functions as normal except for these lights.
Never really dived into this before... But I'm guessing a Diode? Or Transistor on Q89, on the power driver board?
Any tips? I did order a logic tester a few days back. But all I currently have is a simple Meter