[sdiy] Early Ensoniq Mirage DSK-8 schematics

[Gordonjcp]

On Fri, Sep 09, 2016 at 05:00:49PM +0200, Rutger Vlek wrote:
> Hi guys,
> 
> does anyone have schematics for the early Mirage DSK-8? I'm struggling with a sound generation problem. Basically, I'm not getting any from the voice mux (4051), before the CEMs. I swapped out the DOC chip for a 'new' one, but no luck.
> 
> I found a schematic dated 10-17-1985, but that seems different from the DSK-8 I'm looking at. It has a -8V rather than a -12V supply line. And it has double the amount of LM318 opamps for the conversion of the DOC chips DAC output (+sig and -sig), and double the LM318s for the volume feedback circuit from and to the DOC IC.

I do, somewhere.  I'll have a rake about tomorrow morning.

DOC chips rarely fail.  Have you swapped out the 4051?  That's a very likely failure.

-- 
Gordonjcp MM0YEQ