Vintage Synth Repair

After finding this image:
http://www.pmerecords.com/Docs/ProdigyPCBLayoutsAll.jpg

. . I've determined that I have the earlier version of the Prodigy. 
Also, I've got my Audio Input working perfectly..

I still could use any advice  on the Filter Control Input, the 
switch issue, and on the FM filter mod (which is trickier on the 
earlier models, apparently)..


Thanks a lot !

-robert andrew scott
[ www.katreil.com ]
[  (540) 842-5985 ]



--- In vintagesynthrepair@yahoogroups.com, "robert andrew scott" 
<quiet_channel@y...> wrote:
>
> Hi.
> 
> I've got a prodigy with CV/gate-inputs. I don't know if these were 
> originally built-in or if Mike Bucki (moog tech) installed them 
> later. I don't know because my unit hasn't got the panel with the 
> serial number.. I bought just the electronics without a keyboard 
or 
> case and have built the unit into a pine box.. So, its just a 
module 
> that I'm currently controlling with my Korg Mono/Poly.
> 
> 
> I would like to install an audio input jack and a filter FM 
> control. .
> 
> - -- - - - - -- - - -- - - --- - - -- - - --
> The Filter Mod info is here:
> 
http://www.physicsenterprises.andrews.edu/diy_archive/manuals/moog/pr
> odigy/prod9.gif
> 
> or here:
> 
http://www.physicsenterprises.andrews.edu/diy_archive/manuals/moog/pr
> odigy/prodmod.txt
> 
> or here:
> http://mysterycircuits.com/projects.html
> 
> 
> and the Audio Input Mod info is here:
> 
http://machines.hyperreal.org/manufacturers/Moog/Prodigy/mods/moog.pr
> odigy.audio.input.mod.txt
> 
> or here:
> http://www.synhouse.com/prodigy2.html
> 
> - -- - - - - -- - - -- - - --- - - -- - - --
> 
> 
> Now, I realize that these modifications should be very painless. . 
> but not in my case. The previous owner silicon-ed the knobs onto 
the 
> pots!! So, I can't look at the component side of my Prodigy's 
board.
> 
> If anyone could guide me to the proper solder points on the back 
of 
> the board, I would very very much appreciate it and I am even 
> offering a slight financial reimbursement for the time and energy.
> 
> 
> Please let me know if you'll work with me on this.
> It will probably involve looking at the schematics and taking a 
few 
> pictures with your digital camera.
> 
> Thanks a lot !
> 
> 
> -robert andrew scott
> [ www.katreil.com ]
> [  (540) 842-5985 ]
> 
> 
> Also, what do you do when the two position switches (Osc Mod 
On/Off, 
> Filt Mod On/Off, Mod Shape..) don't move as freely as they should? 
> In fact, I have to be very careful to switch the Osc Mod On/Off at 
> all..    Maybe there're dirty? Or there could be some internal 
> breakage (though I doubt it) (?)
>