Re: Stratovox Board Problem

Well, I've taken one step forward and two steps back. After noticing that
the game starts to reset after a few minutes - I located the faulty chip
(BCD-Decimal encoder 74LS42) with a can of freeze spray. This is used for
selecting roms1-6 - so it made sense that this chip might be faulty. I put
in a 16 pin socket and tried using a new 7442 chip since I don't seem to
have any spare 74LS42's laying around - and now the game is even worse.
 So - hopefully it'll work after I go to the store and get some new
74LS42's.

By the way, if anyone from Southern California is interested in a
Stratovox - let me know. I would like to get this thing out of my garage.
It's actually in pretty nice shape.

Matt

----- Original Message -----
From: "matt" <galaga@paradise.net.nz>
To: <rasterlist@vectorlist.org>
Sent: Sunday, July 13, 2003 3:20 AM
Subject: Re: RASTER: Stratovox Board Problem

> whats the voltage no the board?? 5v 4.8v 5.1v??? look in differt places as
well i'v got some board that i have to set the voltage a little higher (age
i guest)..
>
> hope this helps
>
>
> ---- Original message from: Matt Rossiter ----
> > This is in the cabinet. I should correct myself on one thing though -
this
> > game does run ok in attract mode, but it does tend to reset at a certain
> > point during attract mode after warming up for a while and I didn't
really
> > notice it. I almost get the feeling that maybe there's a bad rom on the
> > board that tests fine when you do a checksum, but in the game it's
flakey.
> > Hmmm.
> >
> > I'll look over my board again and try your suggestions.
> >
> > Matt
> >
> > ----- Original Message -----
> > From: <solarfox@texas.net>
> > To: <rasterlist@vectorlist.org>
> > Sent: Saturday, July 12, 2003 11:20 AM
> > Subject: Re: RASTER: Stratovox Board Problem
> >
> >
> > > On Sat, 12 Jul 2003 10:49:17 -0700, you wrote:
> > >
> > > >This game runs fine in attract mode. It'll even run for hours with
no
> > > >problem. It takes credits, it makes sounds, it runs happily along.
The
> > > >symptom for this game problem is simple. If I hit player1 or
player2 -
> > the
> > > >game resets. It doesn't matter if there are credits in the game or
not -
> > > >the game simply resets when I hit either button. I'm sure there's a
> > simple
> > > >solution to this game - but for some reason I'm not getting it.
> > > >Suggestions?
> > >
> > > Is this in a cabinet, or on a test bench? If it's a cabinet, first
> > > thing I would do is take a close look at the wiring harness going up
to
> > > your control panel; make _very_ sure that you don't have a wire
pinched in
> > > between two bits of metal (such as the coin door or the control panel
> > > latches) that happen to be grounded -- believe it or not, I've had
several
> > > games recently with similar symptoms, and that's what it's turned out
to
> > > be.
> > >
> > > Also check the bottom of your PC boards and make sure you don't have a
> > > component lead folded over far enough to touch something it shouldn't
be.
> > > (Happens more often than you'd think, mostly because the manufacturers
> > > didn't trim the leads adequately to begin with, or someone before you
has
> > > repaired the board in the past and didn't trim the leads at all.)
> >
> --------------------------------------------------------------------------
> > ---
> > > "In ancient times, they believed that there were only four kinds of
> > matter:
> > > Earth, Water, Air, and Fire. Nowadays, of course, we know that there
are
> > > actually four states of matter: Solid, Liquid, Gas, and Plasma. Thank
God
> > > for progress!" ---(Kelvin Throop III)
> >
> --------------------------------------------------------------------------
> > ---
> > > solarfox@DON'TMESSWITHtexas.net (Gary
Akins
> > jr.)
> > > http://lonestar.texas.net/~solarfox
> >
> --------------------------------------------------------------------------
> > ---
> > >
> >
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> > >
> >
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Received on Sun Jul 13 16:34:01 2003