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Vintage Synth Repair

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Message

moog prodigy modification / repairs !! (cross-posted)

2005-11-24 by robert andrew scott

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) (?)

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