This year I'm offering a DIY Bundle Deal for those who can solder. Get the Self Assembly Kit version of my WPC Power Fix Daughterboard and a replacement switching regulator to replace the LM7812 on your PDB. The bundle is $35. Visit my site (https://www.kahr.us) and click "Expand" to view the WPC Power Fix Daughterboard section. The first thing listed is this DIY Bundle Deal. I expect to offer this through Christmas but might extend if it proves popular.
-Rob
-visit https://www.kahr.us to get my daughterboard that helps fix WPC pinball resets or my Pinball 2000 H+V Video Sync Combiner kit