Quoted from PinMonk:First, was the Service bulletin upgrades already done on this machine? If not, vibration can cause this failure:
https://sternpinball.com/wp-content/uploads/2018/10/Stern-SB189.pdf
https://sternpinball.com/wp-content/uploads/2018/10/Stern-SB190revB.pdf
Second, check the connections to the board first, both two and from.
Do you know where someone who is not in the business can obtain these tech bulletins for ghostbusters? I like to have all the tech docs available prior to having the issue.
Stern only shows 4 tech bulletins for GB on its site. Surely there must have been more.