I have this in the PinWiki...but I never found a picture.
@capt_pinball, Can I use your picture?
Someone made a more professional looking mod that did exactly the same thing.
I changes the resistance value of two resistors.
See: https://www.pinwiki.com/wiki/index.php?title=Sega/Stern_White_Star_Repair#Loud_Hum_and.2For_Distortion_at_Low_Sound_Levels
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Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact ... for board repairs
http://www.PinWiki.com - The Place to go for Pinball Repair Info