Andamiro Winner's Wheel Error U09

Encom

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Has anyone ran into the U09 error? The manual doesn't list it. It comes up randomly on the Winner's Wheel I recently picked up. Sometimes it clears itself and the game continues. When it happens the red LED on the CPU board stops blinking and no status is displayed on the diagnostic Panel.
Thanks
Rich
(who knows better than to buy Andamiro equipment but still did and now regrets it)
 
Just in case anyone else runs into this, I eventually caught the power supply dropping the 5 volts to 4.2 volts and causing the error. Replacing the supply sort of fixed it, I also found that LED strip that lights up the "Winner" sign seemed to be causing the voltage drop. Disconnecting the LED's for the sign pretty much stopped the .5-1 volt swing in the 5 volt line. I do still see the new supply swinging .2 volts but it isn't enough to crash the game. I may add a large filter cap to see if I can stop it entirely.
 
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