Re: looking for a chip

From: Mark E Davidson <Burbs1_at_concentric.net>
Date: Fri Jul 20 2001 - 23:18:50 EDT

Thanks for all the replies! I found the chips at Consolidated at James
recommendation and ordered a dozen. Amusingly enough, The "backwards" MB3713 was
also in stock and 1/2 the price.

-=Mark=-

Marc Alexander wrote:

> Don't know if it helps any...
> The MB3712 (commonly Fujitsu branded?) is a really common old audio amp used on
> many older arcade boards, and you can double your chances of finding one,
> as the MB3713 is absolutely identical but has the pinouts reversed,
> so if you can find an MB3713 just put it in the other way around...
>
> You can see the pinouts on many old schems, including page 8 of this one:
> http://www.spies.com/arcade/schematics/PDF/MoonCrestaSch.pdf
>
> Cheers,
>
> Marc
>
> ----- Original Message -----
> From: "Jess Askey" <jess@askey.org>
> > Are these the same chips used on most Konami boards? If so, Im sure I have a
> > track and field board around here that I can send you. Anyone know if they are
> > the same? It sounds very familiar.
> >
> > Mark E Davidson wrote:
> > >
> > > An apology to all as this is really a raster question... Only problem is
> > > that after 3 send, It doesn't seem to go through and since most of the
> > > people read here anyway..... My question..
> > >
> > > Im looking for an IC for my Cinematronics, Jack The Giantkiller board, I
> > >
> > > believe that it is the audio amp chip for the sounds. The Fairchild # is
> > >
> > > MB3712. This crosses to an ECG 1423. The real problem is that NTE bought
> > >
> > > ECG and NTE has no cross-reference for this chip. A quick trip to my
> > > local electronics store confirmed my fears that NTE dumped the ECG chip
> > > in the acquisition :-(.
> > > Does anyone have a source for this chip or pin out of these chip (it is
> > > an 8 pin single inline package) so I can do some reverse engineering?
> > > Unfortunately ECGs site is gone so that's no help. :-(
> > >
> > > ---------------------------------------------------------------------------
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> >
> > --
> > later,
> > jess
> >
> > ***** I have a new email address... jess@askey.org *****
> > ---------------------------------------------------------------------------
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> >
>
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Received on Sat Jul 21 00:32:35 2001

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