<div dir="ltr">Cleaning slidepots - unless they are expensive ones like P&G - is an exercise in futility. They are not long life products, usually the first components to fail with age. The resistive track tends to fail beyond repair, spraying any cleaner inside make the problem worse (no cleaner removes the abrasive foreign particles inside), the lubricant inside dries up with age. You have to disassemble them to remove the abrasive foreign particles inside and relube them; this is labor intensive work and despite gentle handling the slidepot case has broken one too many times. I won't buy "NOS" slidepots because of these risks, and they are probably close to end of useful life anyway.<span class="gmail-Apple-converted-space"> </span> Besides the futility in cleaning them, finding new replacements is near impossible because the lack of any industry standard in PC board pinout footprint means that exact replacements are not available, and even if found they can't be purchased in low quantities.<div><br></div><div>Makers tend to make subtle changes to the slidepot pinout footprints over time as a function of planned obsolescence. Alps is notorious for this. Today they fit the circuit board, tomorrow they don't.</div><div><br></div><div>Dust is the enemy of slidepots. Slidepot shields are not a 100% protection. When positioned with the opening upwards - think synths and mixers - fine dust will settle inside wreaking havoc on them. Rack mounted EQs generally aren't as bad because the pots are positioned vertically - passively falling dust may not get inside but air currents (IE HVAC) can blow dust in them.</div><div><br></div><div>Slidepots have long been a problem with vintage ARPs. There are now a couple of suppliers selling new slidepot sets for ARPs using new Bourns slidepots with an adapter board made to fit the ARP circuit boards. This is the only repair work I will do on slidepots as long the customer agrees to spend the $$ for these.</div><div><br></div><div>For these reasons, I have avoided buying any new gear that uses slidepots. One of the rare exceptions is my new Intellijel Cascadia, and I bought the optional clear plastic cover to shield the slidepots from dust.</div><div><br></div><div>MC</div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Tue, Apr 28, 2026 at 9:49 AM Ben Stuyts via Synth-diy <<a href="mailto:synth-diy@synth-diy.org">synth-diy@synth-diy.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">Hi Richie,<br>
<br>
I’ve had the foam of destruction in my Moog Rogue. It also got extremely sticky on everything it fell onto. Is yours similar? I got rid of it with isopropyl alcohol and a brush. And then I replaced it with Nothing™, as it always sits under a dust cover.<br>
<br>
Some people just take out the board and rinse it off in a bath tub, then brush it with IPA and dry it. I’ve never dared to do that, and usually try the following:<br>
<br>
For resurrecting the faders without taking them apart, you could try Deoxit F5 and F100 faderlube spray cans. It is safe for carbon sliders. Start with F5 as is cleaner + lubricant. F100 has no solvent, so you can finish with that as a form of preservation. If the feel isn’t right after all this, you could experiment with something like Electrolube CG60 contact grease.<br>
<br>
If you do want to take the faders apart, the cleaning is basically the same, you just get better access.<br>
<br>
You mention silicone grease. Make sure it is acid-free before you get it near any electronics. Otherwise the fumes alone are enough to destroy certain components. (Ask me how I know.)<br>
<br>
Ben<br>
<br>
<br>
> On 28 Apr 2026, at 13:53, <a href="mailto:rburnett@richieburnett.co.uk" target="_blank">rburnett@richieburnett.co.uk</a> wrote:<br>
> <br>
> Can anyone recommend a good process for cleaning dust our of slide potentiometers on an old Roland SH-09?<br>
> <br>
> The synth was stored underneath a bed in the spare room when we moved house about ten years ago, and I *thought* it had a dust cover over it! It turns out it didn't (>.<) and the slide pots are in quite bad shape now.<br>
> <br>
> The synth is functional but the sliders feel scratchy and there is obviously intermittent electrical contact because cutoff, LFO rate, etc jump around a lot when the sliders are adjusted. The slide switches are 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 black felt/foam sheet that was obviously originally meant to be a dust shield for the slide pots. The problem is that this material has become brittle and literally crumbles upon touching. Can anyone recommend a good material to replace this with?<br>
> <br>
> If I can fix the pots with a squirt of some magic spray that would be fantastic, but I'm also prepared to de-solder then and carefully open them up for cleaning if that is what is required. I would rather take time to do the job properly, but not sure what is the best way to proceed? I have access to a dry compressed-air line, dish soap, cotton buds, Isopropyl alcohol, acetone, silicone grease, soldering/de-soldering tools, etc, but don't want to risk making the problem worse without asking for advice first.<br>
> <br>
> Thanks in advance for any advice,<br>
> <br>
> -Richie,<br>
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