You will also need to splice the brown wires back together, or just put the new cord hot side right onto the fuse holder, and the other on the return of the transformer. or... just drill a hole in the bottom right corner, and add a switch...

is that credit wheel aligned right? hard to see. chk that the reel moves manually from 0 to its max allowed.
move it by hand one step at a time, and watch those switches for proper op.
it needs to have credits to start,"without a coin dropped".

NO!!! that is a dead short.
BLACK goes to the fuse, White to the Return on transformer, GREEN to the mounting bolt on transformer.
From the fuse, white/green looks like it goes to the knock off switch, then??? need a schematic to proceed.
I would look at that credit unit closer.
Try a jumper on that switch with the green wire, may be not closed good enuf???
Then, chk the other ones closer, did you tighten the switch stacks? and clean those switches?