So I'm having an issue with my Williams Aztec. Game score reels all zero out but score motor is still spinning. After some preliminary observations the reset relay's last switch, when manually opened stops the relay and game can be played with no trouble until games end and I have the same issue. Anybody have a section of schematic that traces the reset relay? Any other suggestions? Thanks as always for any assistance you can offer
Here is the manual for the Aztec,starting on page 3 the sequence of operation reset cycle.
Check (clean/adjust) your 16 zero break switches on the scoring drum units,M&b index C,bonus relay zero position... <All in the schematic 5c-5e section is where i would start to look. 
http://mirror2.ipdb.org/files/119/Williams_1976_Aztec_Instruction_Manual.pdf
Here is the schematic too.
http://mirror2.ipdb.org/files/119/Williams_1976_Aztec_Schematics.pdf
Ran through the startup sequence and everything seemed to be going according to the book but the game still not resetting. Seemed like all units stepping as they should but the reset never completed. Figured I'd start all over again and removed all the reels and saw that all switches were gapped right and the reels moved freely. Tried to restart again and one reel stopped short of 0. Looking at that reel the lead had come off ( cold solder joint) I re soldered the lead and game resets and plays as it should. Thanks for your help pin-it!
Hey,
Just went through the same thing with my Fun Fest. I had to clean the contact on the Game Over Relay. I just ran a
q-tip with some alcohol on it through all the contacts on the relay and it took care of the issue.
Quoted from slawnski:I re soldered the lead and game resets and plays as it should. Thanks for your help pin-it!
Cool it runs. Enjoy some play time.
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