Re: Q*bert sound board repair

        I actually thought I remembered there being more, but here's a
copy of Bob's response. I had no problem finding these:

jwelser@ccwf.cc.utexas.edu wrote:
>
> Hey all,
>
> Does anybody know if the DAC 1408A (I didn't recognize the
> manufacturer's symbol on the chips that are currently there) that is
> on Gottlieb sound boards is the same as a MC1408 DAC? I haven't
actually
> been able to find a datasheet for the MC1408, so I haven't compared
> pinouts. The numbers are the same and they're both 8-bit DACs, so I
> figured there is a good chance they're the same.
>
> Thanks,
>
> Joe

That is a Fairchild's part number & can be replaced with the MC1408-6
on the parts page or if you have access to DACs, any of these:

AMD AM1408-6/7 SSS1408A-7/8
AD AD1408-7/8/9
FAIRCHILD DAC1408A/AC/BC/CC
MOTOROLA MC1408-6/7/8
NATIONAL "
PMI DAC1408A-6/7/8
SIGNETICS MC1408-6/7/8

They are also used on the WMs snd bds & many others.

Happy Gaming.......

-- 
Big Bear  <bob147@bellsouth.net>  Thanks  The Real Bob Roberts?
     For parts http://personal.msy.bellsouth.net/~bob147
On Sun, 19 Aug 2001, David Shoemaker wrote:
> An update on my S&S board repair.
>
> Have replaced U21 (the op amp just after the dac), Q1, Q2 in the speech
> section.  Speech is still VERY slow to the point its nothing more than
> clicks / pops.  But faster than what it was.
>
> Output of U21 is based around 1.53vdc where on a good board should be around
> 9vdc.
>
> Looking at the DAC's now.  Anyone have a source for the 1408A dacs? Or has
> anyone done a hack to implant more modern dacs?
>
> David
>
>
>
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------------------------------------------------------------------
Joseph J. Welser                       jwelser@ccwf.cc.utexas.edu
Design Engineer -- Crystal Semiconductor Corporation
Work:  jwelser_at_crystal.cirrus.com      http://www.crystal.com
P.O. Box 17847; Austin, TX  78760
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