Quoted from Averhoeven:There was an extra capacitor that seems to attach to what I think is the node power that came with the shaker. That's what I'm pretty sure blew. The game, shooter lights and shaker all work fine after removing that short capacitor link (and the smell is finally gone...). So I'm pretty sure that was it. It could really only go in one way and I'm pretty sure I plugged it into the right slot (bottom right of the node board). Not sure what happened with it though.
My shaker motor was missing the z-cap portion to hook up the capacitor. So when I plugged it in I was left with 2 female connectors. I contacted stern and they said the newer machines like JP don’t need the optional capacitor because it is already built into the spike 2 board. I have been running it without the optional capacitor and it works fine.