How to Read Pinball Schematics

MarcoTV re-run!
Let's learn how to read schematics with pinteacher, David Volansky aka GrumpyEMDoctor on twitch!!
Featuring 1973 Gottlieb Jack in the Box
Learn more about EMs by joining Fun With Pinball's database of educational material, their online repair clinic or in-person workshops!: www.funwithpinball.com/

[@dahur]

I bought my 1976 "Target Alpha" in 1978. It worked so good over the years, that's the main reason I was never forced to learn how to repair it. Fast forward to moving from Michigan to southern New Mexico in 2008. Upon reassembly, it semi-functioned..and it ended up sitting for 15 years. Now I sure would like to get it going again. Since there is absolutely no one here where I live that works on these, I'm going to have to give it a shot myself. A lot of the repair video's say the first thing to do is clean the contacts, and the all the Jones plugs, as that's where 90% of the trouble comes from. The score motor runs continuously, the 5 lower drop targets don't reset, the reels are very sluggish, and don't want to reset back to zero. I can press the DX relay, the score motor stops, the ball kicks out, but the scoring is erratic...and the 5 lower drop targets stay down. This is how it semi-functions. So now I'm just waiting for the stuff I ordered to arrive.

[@vicferrarisgarage]

Awesome. I’ve rebuilt 7 EM games but cant get a grasp on how to read the S. Thanks