Re: Mystery PCB

Yes Chris, the 2 end chips are 74221's. The one in the center is a
74LS03. The only numbers are the ASSY G-6105-A on the front and G-6106 on
the back. Other identifiers are a small EEI E8-0 in a circle on the back.
 Most likely the PCB house marking. Also what looks to be a "watermark"
letter M that's only visible when held to the light. It's obviously not
important to the operation of my restoration, but it is a curiosity.

Steve

--- Chris Loggans <chris@type181games.com> wrote:
> The two end chips look like 74221's.
>
> -Chris
>
> --- Kev <mowerman@erols.com> wrote:
> > I've never seen that either. What are the TTL Chip
> > numbers?
> >
> > There are a lot of capacitors on that board.
> >
> > Speeds for Ms Pacs sometimes will use 3 TTL chips &
> > the Speed Demon
> > enhancement kit used 3 chips (not all TTL).
> >
> > Probably something out of a Jukebox....
> >
> > Kev
> > mowerman@erols.com
> >
> >
> >
> > > I'm restoring a Ms Pacman. The game was in a sad
> > condition when I got it,
> > > but complete. I found several loose parts in the
> > bottom of the cabinet.
> > > This PCB shown at
> > >
> >
> http://members.home.net/cademo/teaganm/images/mystery.jpg
> > is one of them.
> > > I don't recognize it as a Pac part, but maybe it's
> > an aftermarket item.
> > > Does anyone recognize it? Thanks.
> > >
> > > Steve
> >
> >
> >
>
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Received on Fri Dec 14 13:39:55 2001