Look at a post I made to RGVAC (and Bob Roberts' Response) around
2 years ago. There are LOTS of commonly available replacements for that
DAC.
Joe
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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Received on Mon Aug 20 09:27:23 2001
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