[sdiy] Roland 80017a clone and "refurbishing"?

[Luís Marka]

I once opened a bad module to find what looked like corrosion on the 
resistors. I believe replacing resistors and caps with standard SMD ones 
would bring these modules back to life.

>> I saw a bit of talk about this guy in the archive.  Anyone actually  
>> heard his replacement?  Even if it were "different" than a 80017a if  
>> you replaced all the chips it would at least sound consistent between  
>> voices (assuming a proper calibration), right?
>>
>> http://users.skynet.be/bk318113/303/juno.html
>>     
>
> Yes, I've got one of these in my 106.  Sounds perfect.  I wish the price was
> less but at 60Euro its not bad.  All standard parts as I've mentioned before
> ( LM13700's I think, now I cant remember.  Either 13600s or 13700s... )

Now this is something I would like to see. I tried to build an 80017 out 
of three LM13700 but no luck! All I got was "weird distortion" and not 
that much of filtering...