So yesterday I noticed that, while my right flipper button would actuate the flipper, it wouldn't cycle the multiplier lights or row lights. My left flipper button still worked as expected. Then, I noticed that the switch for "B" on "BET" wasn't triggering. So I look through the schematic and find this chart. Is it safe to assume that the "WHT-BRN" wire may have broken off somewhere? What does the "1J10-9" under the "WHT-BRN" mean?
P.S. Looking closer, this would also explain some issues I've been having with the drop targets where they don't pop back up.