Quoted from dluth:My right flipper is intermittently dying. When it does, i have done the following tests.
Flipper opto switch: working fine
Flipper coil test: power test fails, hold test works
There is 75V at each lug. The orange and brown wire ones drop to 68V when I press the flipper button. The blue wire one drops to 0V. Same behaviour as the left (working flipper)
When I ground the middle (brown) lug with my DMM to test the voltage and hit the flipper button, the flipper works.
Not sure of the next step???
Check that a holding screw did not come loose, the screw that holds the solenoid bracket. This happened to me, I think the shaker shook it loose. So the solenoid does not move properly up and limits the flipper travel. Just a guess. Although it would not be intermittent in that case.