OXO
Williams, 1973I have a Williams OXO 1973 EM Pinball Machine and this should be my final post (hopefully) about it. I have gotten most things fixed and my last major problem is that when I turn the game on the OXO "board" (tic tac toe looking thing) in the middle will not reset from the last play. I have checked most if not all relays and made sure they are clean and adjusted but I may have missed one or two still that is causing this problem.
If the OXO resets between balls but not when starting a new game, check this switch for proper operation.
Be careful because this circuit runs on 120 volts
For a switch to work 3 things are necessary:
1) When open, there should be a small space between the contact points (duh)
2) When closing, the long blade's contact point should push the short blade's contact point enough to move the short blade
3) The contact points should be clean, which they usually will be if #2 is happening
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Pine, CO