Quoted from rockwell:I've recently obtained my first machine (Embryon), and plan to use it as a learning project. It is in good shape and working well, but I would like to go through it bit by bit and restore/replace parts to better understand how pinball machines work, since I would like to own more and be able to fix them myself. I'd appreciate any feedback. I'm looking forward to it!
Read this whole thread:
https://pinside.com/pinball/forum/topic/bally-as-2518-club
Read this whole site:
https://www.pinwiki.com/wiki/index.php?title=Bally/Stern
There is probably an Embryon club thread on Pinsie that you can checkout too.