Re: Tech - Williams System 9 Pop Bumper wiring

SS was my favorite game in college back in the mid-80's. I've had
this one for about 6 years, but it spent about 5 of that in storage.
The first PF I had was completely shot, but I've accumulated two more,
one which turned out to be usable, the other one was also thrashed,
but that gives me a lot of spare parts if something goes out.
Unfortunately the best ramp in the bunch is fairly beat up, and the
only Shuttle toy I have is really bad. I did some touch up on the PF,
so it looks OK, but just OK. Waiting on repros or John Greatwich's
direct ink and then I'll rebuild again.

The good news is that the backglass is in really good shape, and all
of the electronics worked great (6 years ago). I just did a repaint
of the cabinet from stencils, and hopefully after some touch-up it
will look pretty nice. Putting new legs and new displays on, so at
the bare minimum it will look good on the outside.

On Feb 9, 8:53 pm, beaver <e...@xxxxxxxxxxxx> wrote:
Space Shuttle is a great machine.  Glad to hear you acquisition.

System 9 should not have transistors under the playfield.  Each lamp
should be on the lamp matrix, and are controlled by the CPU.  The pop
bumper coils should not fire the lamps.

Edward Cheung CARGPB26

On Feb 9, 8:29 pm, pkjensen <pkjen...@xxxxxxxxxxx> wrote:

This may be a noobie question but I haven't been able to find an
answer so far...

My first pinball project is a Space Shuttle.  I'm putting the
playfield back together and see that two of the pop bumpers have what
appear to be transistors in the wiring for the lamps, but the other
bumper does not.  I'm curious about the need for the transistors, as
well as why the pop lamps have (what I think is) higher gauge wire
inside clear tubing, rather than the normal 14 gauge wiring elsewhere.

Am I OK rewiring the pop lamps with "regular" wire without the
transistors?

Thanks!

.

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