If things get stronger or weaker over time capacitors are always the first suspect.
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Quoted from Schwaggs:If the EOS isn't opening at full flipper stroke, the high power coil will stay energized, overheating the coil making things bind up. Next time your flippers get weak, turn off the game, raise the PF and feel the flipper coils to see if they are hot. Adjust the EOS so it is gaped 1/16" at full stroke. Do not measure by pushing the flipper bat, but by pushing on the pawl into the coil.
I've never played an 80s Williams where the flippers didn't get hot after a while
There's a separate pin on 2j12 going through a separate contact on the flipper relay and down through the playfield connector for each side's flippers.
Quoted from frunch:I find new switches may need a little filing to get them working properly.
New eos often have a protective coating on them. File or use alcohol, etc to remove it. You'll see the resistance over the contacts drop.
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