Sharpsville, PA
Quoted from RandyV:I also read that the flipper opto boards can sometimes cause this behavior (although I don't understand how). I cleaned the flipper optos and there was no change in behavior. The switch presses and the EOS all register normally. The UR flipper switch test was initially unstable (open-closed-open-closed-open-closed) but went away after I cleaned the optos.
I didn't understand this, either. I didn't really believe it until I saw it happen once.
My conclusion (although not necessarily the correct one) is that the flipper opto switches can flicker on-off-on-off so fast they don't show up in switch test. When this happens, the coils are basically being duty cycled, and thus they lack power.
