Power on, score motor starts running immediately. I can start a game, all score reels reset, ball served up, scores and chimes as it should. When the ball drains, it's served back into the shooter lane immediately. Ball count (and player on a multi player game) DO NOT advance. Fixing for a friend, I played around with it a little, but ran out of time and ideas. I have cleaned the ball count unit and the action on it is nice and snappy. Inspected the score motor brake - intact and apparently working - and did a quick review of the Reset Bank, but didn't see anything obviously out of place. Not ruling it out, as it was a really quick check. Any thoughts appreciated!!