If it didn't come with a schematic, I'd recommend that you purchase one from pbresource.com. In this case, you probably don't need it (you can already narrow down the problem to a small number of connections), but you will in the future. I also recommend reading http://www.pinrepair.com/em/index1.htm for an overview of the parts of EM pinball and some troubleshooting ideas.

Have you checked continuity on the cord? It's possible the cord is damaged.

It's hard to tell from the photos, what is connected to the other end of the fuse? Power switch? The transformer?

Are all the score reels spinning or do some of them stop at zero?