Quoted from PinballGlory:I notice that in the schematics there were a relay called YY but I dont see it in my relayboard so i suspect that this i the relay thats missing
The USA schematic doesn't list a YY relay in the legend or where you show it near the transformer. You should be fine without it.
Quoted from PinballGlory:It doesnt work now
If the Replay Button doesn't activate the Replay Button relay (V), Inspect and diagnose this circuit with Alligator clip jumper wires
https://pinside.com/pinball/forum/topic/gottlieb-big-shot-repair#post-6305153
http://www.planetimming.com/Pinball/troubleshooting/EM%20Troubleshooting.pdf
http://www.pinrepair.com/em/index3.htm#features
Example of a pinsider actually doing this https://pinside.com/pinball/forum/topic/red-baron-tech-question#post-5858156