Here's
a few pictures from the mini-cab. I didn't really take any of the full
upright, don't really know why. I probably should have, with all the
work
I put into it. As usual, each picture here is linked to a higher
resolution,
better-quality picture.
This is the Galaga mini-cab from the front.
This is the power filter board. The power comes in from the connectors on the left, gets converted to AC +5v, +12v, then is distributed from the connectors on the right to the various parts of the machine. The highlighted circle shows some burn marks around a couple components, one of the reasons I decided to remove the wires from here and instead use a switching power supply. For more info on the switching power supply, visit the Joust 2 section of this site.
Ugh! Definitely not a pleasant sight. It looks far worse in reality. This is a close-up of the burn marks. It almost looks like rust, and perhaps it is, but looks more like scorch marks to me. At one time this board took some serious hits.
Here's a good shot of the interior of the cabinet, from the back door. As you can see, I was in the middle of playing with the rewire and have two switching power supplies in the shot. One is a "spare" I got from Enduro Racer, the other is one I KNOW actually works, taken from my Joust 2. As you can see, the wiring is a mess!
Fun with wiring! Here's the mess that I have to connect. The grey wire, all but one of the yellow-black, the yellow, the yellow-white, the purple and the white-green ALL have to go on the two logic ground positions on the power supply. The red wires are +5v as is the white. The orange is +12v (sound). For SOME reason, there is an extra yellow-black wire, not wired in to the CPU PCB edge connector.
More wiring fun. Here is the old edge connector (bottom) with most of the wiring intact. The edge connector on the right is the new one. Oooh, pretty. The odd bird yellow-black is represented here, hanging loose off the old wiring bundle. I had a devil of a time trying to figure out where that went, as I did not want to believe Bally deliberately wired incorrectly. I know from my experience with Discs of Tron that the schematic diagrams are not always reconciled with the final product, and was hoping that was not the case here. Turns out it's just an extra wire. So far. :)
Here is the monitor and chassis. As you can see, it's a bit dirty but 1000 times better than it was when I bought it. See the neck board on the bottom? Don't adjust that while the power is on, you'll give yourself a nasty shock if one of those sharp points penetrates the skin. Not that I would know from experience or anything..
This is a closeer view of the right bottom of the monitor. See the red coil on the right? That's the one I was talking about trying to adjust thinking it was the horizontal adjustment. Oops. Don't confuse this with the piece I fixed on the full-sized game's monitor. That one used much thicker copper wire, almost like a spring, and held voltage I think.
Copyright 2001 Madoc Owain