Whoa! What a fantastic post!

Thanks, Peter, that's great material and should be enshrined permanently
somewhere on the group site as a .txt file or something. Enormously
helpful.

--Chuck

> -----Original Message-----
> From: (i think you can figure that out)
> [mailto: peter@... ]
> Sent: Thursday, June 17, 2004 12:49 PM
> To: Doepfer_a100@yahoogroups.com
> Subject: 1 Re: Replacement jack - CLIFF
>
>
> The original Cliff jacks had a problem with long term spring
> retention - 'memory' if you will.
>
> With a lot of usage the retention changes, creating (at times) an
> insufficient hold on the tip. The net effect - intermittancy. Not
> exactly a feature you look for in a socket!
>
> Replacement is easy with the right tools - those being solder
> wick, a good iron with a narrow tip that won't get too hot and a set
> of spanner wrenches. In that the pads that these jacks connect
> to are huge, there's really no worry about lifting them through the
> use of the solder wick as there is with small pads.
>
> It's a bit tircky as the solder connections are in some cases on
> the component side of the board, but really, you just have to get
> the positioning of the iron down and you're set.
>
> After removing the PCBA from the faceplate, this is what you do:
>
> 1) Place a section of solder wick over the solder fillet (junction)
> you wish to remove. Solderwick is flat braided copper wire which
> draws solder into it with heat.
>
> 2) Place the iron over the solderwick, applying slight pressure
> (don't overdo it). Make sure that you're holding the tip of the iron
> directly over the solder you wish to remove (remember, that is
> now covered by the solderwick itself).
>
> 3) Hold it for a few seconds. You will see the copper wick
> become filled with silver. This is the solder lifting from the area
> you're wishing to remove and flowing into the wick.
>
> 4) Lift the iron and the wick. Vwa- LA! You'll now see a lead
> going into a hole with no solder filllet.
>
> 5) Repeat four times (four terminals of the jack).
>
> 6) Lift the old jack out - If all the solder has been removed it will
> come out freely. If it doesn't, then you haven't removed all of the
> solder you need to. DON'T TUG! Look it over, find the section
> that's still there and repeat the wicking process to that area.
>
> 7) Place the new jack where the old one once was and solder it's
> terminals onto the original holes.
>
> I highly recommend that you use sufficent anti-static precautions
> when doing this. Although not all Doepfer modules use CMOS
> parts, looking it over to see if it does you might be handling it
> enough to blap the CMOS if in fact it's there. It's better
> to just put
> on the wrist wrap before and not worry about it.
>
> Another thing you need to be careful of: In that Cliff jacks don't
> use washers under the mounting nuts, when removing the
> hardware from the faceplate to remove the PCBA, make damn
> sure you have sockets or spanners. If you use an adjustable
> cresent wrench, if the end of that comes in contact with the
> faceplate, you will scratch a nice (not!) little ring around
> the holes
> as you loosen or tighten the hardware. Won't make too much
> difference with the pots as the knob wil cover up any scratches
> but with jacks you are screwed. . Obviously, you want to avoid
> that. Even with spanners or sockets, just look carefuy tomake re
> i' not down to the faceplate
>
> I did my LFO last night (six jacks) in about ten minutes.
>
> hope this helps -
>
> Peter
>
>
>
>
> --- In Doepfer_a100@yahoogroups.com , "unknown freak"
> <vogelscheiss@v...> wrote:
> > Two questions:
> >
> > - Could you characterize in a few words what that design issue
> is that
> > they've corrected And
> >
> > - How difficult is it to swap the jacks, i.e. time required, skill
> > involved
> >
> >
> > > -----Original Message-----
> > > From: (i think you can figure that out)
> > > [mailto:peter@b...]
> > > Sent: Thursday, June 17, 2004 11:43 AM
> > > To: Doepfer_a100@yahoogroups.com
> > > Subject: 1 Re: Replacement jack - CLIFF
> > >
> > >
> > > Analogue Solutions, Analogue Systems and Deopfer all use
> > > CLIFF jacks - they are the manufacturer. Moog also uses
> them,
> > > but in 1/4 inch, not 3.5mm.
> > >
> > > The problems that probably most of use have seen with
> these
> > > jacks was due to a design issue that Cliff has since
> corrected.
> > > Most of the D and A. Sys modules shipped in the ast year
> have
> > > already had these new jacks installed.
> > >
> > > Until recently, these jacks weren't availible in te US piece
> parts,
> > > but CLIFF USA (in the bay area) has got them.
> > >
> > >
> > >
> > >
> > >
> > > --- In Doepfer_a100@yahoogroups.com , "ps_minor"
> > > <pscottm@h...> wrote:
> > > > thanks for thie info. who is cliff
> > > >
> > > > i have 3 Asys module jacks that need to be replaced.
> > > >
> > > > cheers, -psm
> > > >
> > > >
> > > >
> > > >
> > > > --- In Doepfer_a100@yahoogroups.com , "(i think you can
> figure
> > > that out)" <peter@b...>
> > > > wrote:
> > > > > Doepfites,
> > > > >
> > > > > I got a handful of the new and improved jacks from Cliff
> last
> > > week
> > > > > to replace the older design inherent in my D and A. Sys
> > > modules
> > > > > that in some cases had become problematic.
> > > > >
> > > > > There are definite differences to the spring tension and
> while
> > > it
> > > > > makes for a slightly less smooth insertion 'clunk' , I'm
> pretty
> > > > > confident these new guys will go the distance. I
> recommend
> > > > > them to anyone who's current jacks may be failing.
> > > > >
> > > > > - P
> > >
> > >
> > >
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