After a lot of work got my 1972 Williams Olympic Hockey working and played it about 20 times last night before it seemed to just stop working properly, after ball 3 drained it didn't want to eject the ball so I just removed the glass and did it manually several times...... it never would eject the ball so I turned it off and on again and when I push the start button..... nothing, yes there are credits on the game. Any ideas what's happening ???

By the way this game was completely gone through, all switch contacts where cleaned and readjusted, steppers where cleaned and readjusted, all score reels cleaned and readjusted, all relays and solenoids where tested and are working properly.
(IAKWTPI)

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Problem fixed, it was a bad score motor, replaced and now it works fine.