Quoted from Indypin:That's interesting because I just purchased a RS. I put in a color dmd as well upon receiving the pin and now I have a weak left lower flipper.
Seems like a coincidence to me. Transmitter optos are on all the time and will burn out over time. Game is 25+ years old after all. Time for the transmitter optos to start going out.
Start with swapping the flipper opto boards between left and right side to see if the problem follows. I expect it will. I shaped optos are available as well as the whole board.