To: Analogue Heaven analogue@hyperreal.org,
From: Kevin Lightner synthfool@synthfool.com,
cc:
Subject: Re: [AH] Prophet 5 key cleaning issues
Date: Sun, 21 Sep 2003 11:27:02 -0700

---

>I've had my Deoxit moments myself recently.
>
>Did wonders for cleaning the pots on the Serge I repaired. Two weeks later
>however, they were all dirty again and I suspect this is from the Deoxit
>attractiving new dust into them. Used it again, fixed the noisy pots and
>have recommended to Cal Arts that they do this regularly (can't hurt). In
>this instance, the only possble solution I could see to avoid this and
>eliminate the noisy for very long periods was to replace all the pots and
>there isn't enough money in the world to motivate me to do that.
>
>For the record though, I had no experience with it eating plating or
>faceplate graphics, although the ones on this Serge are anodized and I can't
>see a passive, non-heated cleaner doing that. Using an etch solution is one
>thing, but Deoxit does not contain ferric chloride last time i looked.
>


Peter,

Past solutions, such as cramolin and others are *not* passive.
Even Caig said so. Nothing can "penetrate" passively and that is the
term they've used.
I have no idea if their other chemicals are as bad; I'm not waiting
to find out using a client's synth as a testbed.
Fwiw, there are many, many more chemicals than just ferric chloride
that can eat copper.
There are other techniques available other than pot replacement or
continually spraying something into a pot to help it operate
correctly. Whether one-time, or a regular treatment, *adding* a
cleaner will not *remove* dirt. Where did the dirt go? It likely
stayed in the pot and that's why the problem has not ceased.


--
Regards,
Kevin Lightner

http://www.synthfool.comBR>