Pac-Man Restoration March 26, 2010
A photo can make something look a lot cleaner than it is, but
this Pac-Man machine was the nicest I've ever seen on the inside. I took this
photo before any vacuuming or cleaning.
Note the satellite board installed (red arrow) as part of the Ms. Pac conversion that had
been installed on this machine. This is a Two Bit Score ABC ROM replacement
for the OEM board. Apparently, twobits.com includes it as part of their Ms.
Pac-Man board package.
The control panel (below) shows the usual palm-resting wear, but it has a graphic
overlay that's in pretty decent shape. The problem is that (ugh) micro-switch
replacement joystick. It'll have to go but there's nothing I can do about the new
holes drilled through the overlay. I'll have to order a new one and find & rebuild
an original joystick:
Some more problems to solve. The 12-pin factory connector to the control panel was
inexplicably removed, the wires stripped, twisted, and taped:
Why do people do this kind of thing? Anyway, this is a great example of what I see all the time--shoddy
work on the part of someone else. Not only are twisted wires begging for problems,
but you can't remove the control panel and place it aside. This will require
aquistion of an Amp Mate-N-Lok 12-pin plug and socket.
On top of that, many things were cross-wired. A game tech who helps me with the
more challenging things found that the one and two player buttons were wired
together and also hooked up to the tilt switch on the coin door. I have no idea why,
but had somebody whacked it hard enough to close the tilt switch, it would have
shorted the +5 to ground.
Time to clean up the glass bezel. First, we'll clean up the top side. You can be
pretty aggressive in your tactics here because all the ink graphics are screened
onto the other side. I use lacquer thinner to make the job go fast. (Don't worry, I didn't
use the screwdriver to scrape the glass--it pried open the cap on the lacquer
thinner). DO NOT LET ANY OF THE THINNER GET ON THE OPPOSITE PRINTED SIDE.
Safety Note: Do this only with good ventilation, away from any sparks or flame, and
wear the appropriate gloves.
Now use a razor blade to scrape off any remaining gunk. I'm using an automotive
tool that you just have to buy (auto parts stores have them). It hides a single-
edged blade when not in use and provides great control. Go over the glass one
last time with lacquer thinner.
Safety Note: Don't cut anything important off your body while
using this tool.