<div dir="auto">Why haven’t you vacuum right after taking it out from under the bed? That would have saved you a lot of work… I remember fixing one many years ago and the faders weren’t that bad to take apart, clean with 70%IPA (so it won’t damage the tracks) and it worked nicely. It was a fair amount of hours tho… i did replace that crumbling foam entirely with a thin layer of black felt (almost as thin as see through). Client never complained (and did sent more stuff to fix). Best of luck and lots of patience ;)</div><div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Tue, 28 Apr 2026 at 13:27, Mike Bryant <<a href="mailto:mbryant@futurehorizons.com">mbryant@futurehorizons.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)">
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Felt makes a good shield for faders. </div>
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But unfortunately unless they are the really expensive P&G or similar ones, taking them apart will most probably actually make things worse. We did use to have a spray for cleaning sliders but I think it got banned around 2005</div>
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Best bet is to buy new ones of the same size.</div>
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<div id="m_2295250247001028821divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt;font-family:Calibri,sans-serif;color:rgb(0,0,0)"><b style="font-family:Calibri,sans-serif">From:</b> Synth-diy <<a href="mailto:synth-diy-bounces@synth-diy.org" target="_blank" style="font-family:Calibri,sans-serif">synth-diy-bounces@synth-diy.org</a>> on behalf of <a href="mailto:rburnett@richieburnett.co.uk" target="_blank" style="font-family:Calibri,sans-serif">rburnett@richieburnett.co.uk</a> <<a href="mailto:rburnett@richieburnett.co.uk" target="_blank" style="font-family:Calibri,sans-serif">rburnett@richieburnett.co.uk</a>><br>
<b style="font-family:Calibri,sans-serif">Sent:</b> 28 April 2026 12:53<br>
<b style="font-family:Calibri,sans-serif">To:</b> Synth Diy <<a href="mailto:synth-diy@synth-diy.org" target="_blank" style="font-family:Calibri,sans-serif">synth-diy@synth-diy.org</a>><br>
<b style="font-family:Calibri,sans-serif">Subject:</b> [sdiy] Slide pot cleaning</font>
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<div>Can anyone recommend a good process for cleaning dust our of slide
<br>
potentiometers on an old Roland SH-09?<br>
<br>
The synth was stored underneath a bed in the spare room when we moved <br>
house about ten years ago, and I *thought* it had a dust cover over it! <br>
It turns out it didn't (>.<) and the slide pots are in quite bad shape <br>
now.<br>
<br>
The synth is functional but the sliders feel scratchy and there is <br>
obviously intermittent electrical contact because cutoff, LFO rate, etc <br>
jump around a lot when the sliders are adjusted. The slide switches are <br>
okay, and the keys aren't too bad after a bit of use.<br>
<br>
I've removed the front panel and also found that there is some sort of <br>
black felt/foam sheet that was obviously originally meant to be a dust <br>
shield for the slide pots. The problem is that this material has become <br>
brittle and literally crumbles upon touching. Can anyone recommend a <br>
good material to replace this with?<br>
<br>
If I can fix the pots with a squirt of some magic spray that would be <br>
fantastic, but I'm also prepared to de-solder then and carefully open <br>
them up for cleaning if that is what is required. I would rather take <br>
time to do the job properly, but not sure what is the best way to <br>
proceed? I have access to a dry compressed-air line, dish soap, cotton <br>
buds, Isopropyl alcohol, acetone, silicone grease, <br>
soldering/de-soldering tools, etc, but don't want to risk making the <br>
problem worse without asking for advice first.<br>
<br>
Thanks in advance for any advice,<br>
<br>
-Richie,<br>
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