Tobash they replace the old with new and provide some info, online translate is pretty good, must be someone who can translate properly ?
It says this only works if the original two big relays are ok, these are not avaialble anymore (so they made a 100% new one)
What they don't mention but what I know about old pinball repairs is that this old stuff is probably soldered with lead solder (bad for environment)
So if you solder get some lead solder, this will blend better with the old.
20 euros on parts, 4 hours work, need 30w solder and desolder tool. 2 out of 4 star difficult level.
remove 7 screws, if rusty like this one resolder old tracks/spots and remove rust and reseal properly.
use a mirror (?) to remove the old solder but not trough the board (like stay on the side, dont go trough to the other side), clean with canvas.
Weld the new parts but don't get it to hot, go from one part to the one furthest away to spread the heat.
Watch out for welding leaks and when finished coat the stuff to prevent short, he uses vernis a composant vert (green antispot spray,
maybe also something like: ?
ProWeld Plus - Pre Welding Spray to Prevent Spatter Adhesion
Also after finishing watch out that the case does not touch the contact or the box is fried (so use coat-spray)
