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Also just another suggestion in case you do make another batch of boards, I don't see test points TP6 and TP7 which are there to help diagnose issues in the transistor drive circuits.
TP6 allows you to manually activate/test the output driver transistors.
TP7 is there to manually activate the predriver transistor in case of locked on output driver transistor.
See page 54 of Ballys FO-560 Repair Procedures manual.
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