I need some help (obviously since I'm posting here). I have all the flashers working except Flasher 5 (middle lamp in the attached picture). I can see that the wire comes from a driver board to the lamp and then goes to another lamp at the back of the playfield (they both flash together and currently neither are flashing). I don't see a loose connection and I'm not sure what to test. Can someone offer some suggestions? I have included a picture of the lamps at the top of the playfield and the driver board underneath (the White/Green is the one that seems to be the issue). I did note that there isn't a wire connecting to ground on that side of the driver board but I have compared with others and that doesn't seem to be abnormal.

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Wow! Talk about missing the forest for the trees! I was looking for a loose wire and didn't notice the missing resistor (well, it's not missing anymore, I found it at the back of the machine with other old scary things). I've got some replacements on order so thanks very much! I'll let you know how things work out.

Thanks guys, especially Schwaggs. Replaced the missing resistor and the flashers are now working fine! Now to tackle the top lights!