My AFM has the Bill Ung saucer mod. I had 1 single LED out on one of the saucers in the back. I couldn't turn it back on until that issue was fixed.
Same thing with the saucer on the right ramp closest to the flippers. Two were out due to a broken wire coming loose from the solder joint. Every single pattern they were out. It was like they were taunting me. I even had a guest who is just getting into pinball notice it. That did it for me. It HAD to get fixed before I would play a single game.