Vintage Synth Repair

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) (?)

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) (?)
>

Hello again.

I've managed to accomplish all of the modifications that I had
planned. . as well as some others. . I will post some information and
pictures this week.

I do have two remaining questions.

Can anyone tell me:
1- how to control the two OSCs seperately with two CV inputs?
2- whether or not it is safe to clean the Prodigy's sliders with
WD-40, generic switch cleaner, etc ?

Thanks to those of you who have emailed me with input and encouragement.


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



--- In vintagesynthrepair@yahoogroups.com, "robert andrew scott"
<quiet_channel@y...> wrote:

>
> 
> 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) (?)
> >
>

On Wednesday 07 December 2005 12:10 pm, robert andrew scott wrote:
> Hello again.
>
> I've managed to accomplish all of the modifications that I had
> planned. . as well as some others. . I will post some information and
> pictures this week.
>
> I do have two remaining questions.
>
> Can anyone tell me:
> 1- how to control the two OSCs seperately with two CV inputs?
> 2- whether or not it is safe to clean the Prodigy's sliders with
> WD-40, generic switch cleaner, etc ?

(150+ lines of "stuff" snipped...)

I wouldn't let WD-40 near any item of electronics!  I use it when I'm working 
on my truck,  and that's about the extent of it.

-- 
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space,  a critter that can
be killed but can't be tamed.  --Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James 
M Dakin

WD40 is good for unblocking locks and stuff like that. No way should
it go near a vintage synth.

Try "DeoxIT" from Caig Laboratories

www.caig.com

On 12/7/05, Roy J. Tellason <rtellason@...> wrote:
> On Wednesday 07 December 2005 12:10 pm, robert andrew scott wrote:
> > Hello again.
> >
> > I've managed to accomplish all of the modifications that I had
> > planned. . as well as some others. . I will post some information and
> > pictures this week.
> >
> > I do have two remaining questions.
> >
> > Can anyone tell me:
> > 1- how to control the two OSCs seperately with two CV inputs?
> > 2- whether or not it is safe to clean the Prodigy's sliders with
> > WD-40, generic switch cleaner, etc ?
>
> (150+ lines of "stuff" snipped...)
>
> I wouldn't let WD-40 near any item of electronics!  I use it when I'm working
> on my truck,  and that's about the extent of it.
>
> --
> Member of the toughest, meanest, deadliest, most unrelenting -- and
> ablest -- form of life in this section of space,  a critter that can
> be killed but can't be tamed.  --Robert A. Heinlein, "The Puppet Masters"
> -
> Information is more dangerous than cannon to a society ruled by lies. --James
> M Dakin
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>

ha! sorry, i shouldn't have made WD40 sound like an actual 
consideration. .

i'm just asking for the available options and their pros and cons.

are there any possible risks of using deoxIT? i've read so much about 
various chemicals being bad for certain electronics..

thanks for these suggestions so far!
-robert.


--- In vintagesynthrepair@yahoogroups.com, Jez <jezosaurus@g...> 
wrote:
>
> WD40 is good for unblocking locks and stuff like that. No way should
> it go near a vintage synth.
> 
> Try "DeoxIT" from Caig Laboratories
> 
> www.caig.com
> 
> On 12/7/05, Roy J. Tellason <rtellason@b...> wrote:
> > On Wednesday 07 December 2005 12:10 pm, robert andrew scott wrote:
> > > Hello again.
> > >
> > > I've managed to accomplish all of the modifications that I had
> > > planned. . as well as some others. . I will post some 
information and
> > > pictures this week.
> > >
> > > I do have two remaining questions.
> > >
> > > Can anyone tell me:
> > > 1- how to control the two OSCs seperately with two CV inputs?
> > > 2- whether or not it is safe to clean the Prodigy's sliders with
> > > WD-40, generic switch cleaner, etc ?
> >
> > (150+ lines of "stuff" snipped...)
> >
> > I wouldn't let WD-40 near any item of electronics!  I use it when 
I'm working
> > on my truck,  and that's about the extent of it.
> >
> > --
> > Member of the toughest, meanest, deadliest, most unrelenting -- 
and
> > ablest -- form of life in this section of space,  a critter that 
can
> > be killed but can't be tamed.  --Robert A. Heinlein, "The Puppet 
Masters"
> > -
> > Information is more dangerous than cannon to a society ruled by 
lies. --James

> > M Dakin
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
>