As part of the ongoing restoration of a 1979 Stern “Trident” pinball machine, here’s a series of videos outlining how to replace the rectifier board on these games. This varies a bit between Stern and Bally due to wire color codes. References are here.
![](http://pinballhelp.com/wp-content/uploads/bally_stern_rectifier_boards-1024x850.png)
![](http://pinballhelp.com/wp-content/uploads/xpin-1-e1612727172507-1024x768.jpg)
![](http://pinballhelp.com/wp-content/uploads/Stern-16B-3-transformer-diagram-1024x609.png)