I have a Williams Scorpion that I'm trying to bring back from the dead. The fuse holder behind the big blue cap was missing so I replaced that and rewired everything behind there. I also replaced the relay in front of the blue cap. When the machine boots I get a 1494 1 in player 1 display and 0400 in the credit display. I believe this deals with the batteries which I replaced with new ones but still doesn't like something. The next thing I did was open the coin door and then turn the machine on quick two times and it looks like the machine boots like it should and the lights go through their patterns. At this point, I can put credits on the machine but I can't start a game. I tried starting the machine with the door open with the auto up and manual down and get the same results. I do have the left lower flipper wires disconnected from the coil switches because this was missing from my machine and wasn't sure what wires went to what flipper coil switches. I don't think having the lower flipper disconnected should prevent me from starting a game. Does anyone know how many balls are supposed to be in the Williams Scorpion? I know there should be at least two because I believe there is a two-ball multiball for this game. I have inspected the start button and the wiring looks good and the switch is operating properly when the start button is pushed. Does anyone have any ideas on what may be going on?

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I will look at this tonight. I happen to have a remote battery holder and will replace that first. When I got the machine ALL of the upper playfield parts were given to me in boxes. I thought I put it all back together correctly. I will look at the switches under the apron. I feel that I'm pretty close to getting this running. Thanks for all the input.

Here is an update of where I'm at. I installed the remote battery holder and then set the game to free play. The game boots without the battery error message now. To start a game I have to put both balls at the rightmost position next to the plunger. If I start a game the ball doesn't go to the plunger. If I put a ball in play all the switches, and targets seem to score and the sound is working. My problem now seems to be that none of the solenoids are working (pop bumpers, targets reset, the ball to the plunger, ect). I checked the F2 fuse associated with the solenoids and it tested good with a multimeter. I stopped there and will have to try and figure out why the solenoids are not working.

What is the starting position supposed to be of the two balls in the machine? Should one ball be right in the center of the machine on switch and the second ball be all the way to the right?

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Here is the latest update. Mostly good news to report here. I went and unplugged all the connectors on the left side of the driver board and made sure the wires were firmly connected to the leftmost bridge rectifier. Turned on the machine and hit the start button and the ball fed to the plunger as it is supposed to. On top of that, just about everything was working. SCORPION LIVES!!! There was a little bad news to report. Though everything appeared to be working I thought I heard a coil lock on and I turned the machine off. I opened the back box and went to the driver board and felt that one of the transistors was hot. I wasn't sure what locked on so I put the playfield up in the air and turned on the game. I saw that one of the drop target assemblies was locked on when the machine was turned on. As a temporary fix, I cut the two wires going to that coil and started the game again. Was able to play the game and not have to worry about a hole burning in my board. I may or may not have what I need to fix this. This is a great way to start the holiday weekend. Thanks for all the Pinside folks that send me pictures so I could get everything wired up correctly.

My son's high school graduation party is at my house and the "Scorpion" will be in the game lineup for everyone to play.

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I had the transistors on hand to fix it. I put the boards back in and everything is good again.