Another Pole Position issue

digitalwack

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Dec 6, 2008
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OFallon, Missouri
My upright Pole Position is randomly displaying a push button message as if it's a cockpit. Also randomly playing the credit sound from time to time but not crediting the machine. Any ideas??
dfe27ef3355c9bf1d2df7910f25abbdc.jpg
 
Check Pins 34+35 of the Custom-IC @ 9M. There should be 5V.
If not, check resistorpack @9N, R233, R234, C20, C21
 
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