[sdiy] easy pro one cleaning

[harrybissell]

The switches (mad by UID now defunct) are packed with a thick grease.
I would seriously consider using a spray with w LARGE amount of lubricant
or even packing a lubricant in by hand. The grease is wiped back and forth
over the contacts, and prevents oxidization.
OK... reduces oxidization.
Would you believe... does not do a damn thing about oxidization ???
(voice of Maxwell Smart, Agent 86)

Another ProOne tip... many of the switches used only ONE pole of the
switch, they have two. You can usually parallel them to get redundant
contact surfaces. Why the PCB designer did not do this in the first place
is anyone's guess. Maybe they did not tell him to ???

Maybe we should do a retrofit PCB that you could put in a ProOne... that
changes all the pots and switches to high quality toggles and pots. Just pop
the chips out of your existing unit, and plug into the new board. ???

Make a $1000 unit out of a $400 unit for sure.

(remember when sequential said "Why would anybody design just another mono synth
?"  then they told the price....)   I got mine for (ready) $60.  It did have a
factory installed problem that made the tuning erratic... took ten minutes to
fix :^)

H^) harry

Julian wrote:

> I did a pro-one a while back with servisol.  I hear deoxit is very good too,
> but its expensive here.
>
> The pots (assuming no change between revisions) have a small hole in the
> body, near the shaft, which you can spray servisol into.  Its not a sticky
> spray, so it wont result in the 'grinding compound' effect, wont damage
> pcbs, but might have issues with some plastics.  I sprayed in a good
> ammount, in order to properly 'flush' what i was cleaning, watching out
> where the run-off ended up.
>
> I used it sucessfully on all the switches of the pro one too, and even on
> the j-wire contact wires.
>
> I was very impressed with it (even though ive heard bad things about these
> sprays in the past - i think the trick may be to find a solvent only one, so
> as not to leave residue)  In this example, it transformed a real flakey,
> glitchey pro-one into a perfectly working machine very swiftly.
>
> Julian
> Roland Tr-606 Modification @ www.numberofthebeast.org
>
> ----- Original Message -----
> From: "NATE!" <timexheater at comcast.net>
> To: <synth-diy at dropmix.xs4all.nl>
> Sent: Sunday, December 25, 2005 8:24 AM
> Subject: [sdiy] easy pro one cleaning
>
> > friend of mine just got an SCI Pro One... and it needs a little bit of
> TLC,
> > just the very basics really. what can everyone recommend for basic
> keyboard
> > [j-wire] and pot cleaning for someone who isn't DIY in the least?
> >
> > he said a few of the j wires were a bit wonky looking...
> >
> > compressed air for the pots? he doesn't mind ordering some pot cleaner if
> > someone could recommend something good as well...
> >
> > thanks.
> >
> > - nate
> >