I've had this problem for awhile now and have spent a fair amount of time trying to resolve it. When the start button is pushed the game will begin it's reset as described in the game manual, it then stops resetting with the AXR relay energized. The flippers and game components work just no ball to play with.
This makes for a very boring game says my wife....
If I reach way in through the coin door and give the motor wheel a wee nudge the motor completes its last 1/3 of a turn, ball pops out and all is good until the next game start. However sometimes (rarely and never when she tries...) the darn thing will complete the reset and the ball will be placed in play.
Any ideas or help would be much appreciated

willbeEM

Hi Rolf thanks for the help,. I have enjoyed reading your replies to others on troubleshooting through schematics and hands on testing of the circuits. To answer your question, when I 'pushed' the motor forward it did rotate one third of a turn to the next stop point.

I have attached a snippits of the Top Score schematic, Ball Return 'O' RELAY circuit and the Ball Return Coil circuit.
Proir to my posting I connectivity tested all of the switch connections in the chain required to energize the Ball Return 'O' relay. All of the switches and connectivity in the 'O' relay circuits proved to be of good connection. When connecting the 'O' relay directly to the 25v source the relay worked, when manually actuating the 'O' relay, the Ball Return Coil energized and kicked out the ball, at first I did not understand the difference between the Ball Return relay and the Ball Return coil. When I did come to understand I then investigated that circuit including the 4C motor switch. All was good. At this point I am frustrated and posted my problem

After posting and seeing my issue written in front of me the idea of 'could the motor be stuck mechanically?' floated up. That research led my to the pinwiki page on Servicing and lubrication of the score motor. A few dozen q-tips and lots of careful cleaning with alcohol of all the working surfaces of the motor. Then a light lube using superlube of the working surfaces and a drop of 3 in 1 oil in the oil hole.
Voila it works.

This may have been a very frustrating process for me doing it the hard way but what I am taking away in experience is priceless!

Thanks again!

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