Ok, I guess I am more of a mechanic and not an electrician. I bought this MSF and everything seems to work, but I noticed that the flashers do not work. Pulling the back glass I see that the F6 fuse is not int eh holder. So I pop one in and power up and it blow right away. I checked the plugs and tried again, same result. I pulled the PBB board out to check the transistors and they all test out OK as does the bridge. It looks like a couple of the sockets have been replaced. The relay looks to have been replaced also.

Trying the read the schematics that I found online are kind of difficult. Any suggestions as to where to start to look.

I pulled all of the flasher bulbs on the back glass area and checked all of the sockets. I pulled all of the plugs for the flashers on the play-field, same result. Going to take a break and try with fresh eyes tomorrow.

I did find more hacks on the power board, I think this game is going to more of a project than I thought. A good learning experience?