FDP Forum / Is there a method to clean scratchy "buttons"?/ 10 messages in thread.

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littleuch

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Florida

Dec 29th, 2017 08:55 AM        

Ya know, on/off switches with (presumably) membrane contacts beneath?<br /> <br /> I dug out my old Focusrite Twin Trak Pro and some of the buttons are so scratchy they short in and out with just a gentle touch.<br /> <br /> I'm reluctant to try anything with a propellant.



Pinetree

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NW Pennsylvania

Dec 29th, 2017 09:05 AM        

Try pressing them a bunch of times to break up any oxidation that's in there.<br /> <br /> <br /> As long as it's working I wouldn't worry about it.<br /> <br />



littleuch

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Florida

Dec 29th, 2017 09:18 AM        

Yeah, I did that initially and it helped some, but the monitor/mute button is really hinky. Sometimes it has a hum in the right channel which a little flick can make go away. But...



Pinetree

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NW Pennsylvania

Dec 29th, 2017 09:23 AM        

Get out the propellant.<br /> <br />



littleuch

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Florida

Dec 29th, 2017 09:25 AM        

My concern is if would play nice with the membrane beneath or dissolve it.



Pinetree

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NW Pennsylvania

Dec 29th, 2017 09:32 AM        

Membrane switches are theoretically the easiest to clean.<br /> <br /> If you can remove the membrane all the better.<br /> <br /> I doubt a product designed for cleaning contacts would dissolve it.<br /> <br /> Maybe try some canned or compressed air first.<br /> <br />



Peegoo

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Curled up

in the fecal position
Dec 29th, 2017 09:36 AM        

A drop of isopropyl alcohol on a microfiber cloth or foam swab and a few wipes of the PC board and the bottom of the button (carbon contact surface) will clean it perfectly.<br /> <br /> If you use a cotton swab, carefully inspect after cleaning to ensure there are no fibers remaining.



littleuch

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Florida

Dec 29th, 2017 10:03 AM        

Thanks guys.



thumbpicker

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St. Louis

"Thumbpicks don't slide into soundholes"
Dec 29th, 2017 05:05 PM        

I've been having good luck with pipe cleaners lately using alcohol for cleaning. I fold three of them in half and then stack them into one unit for 1/4 inch jacks . Four seems to cause problems getting stuck so three work well. There are a couple different types. I use the ones with a plastic "scrubber" on it. These seem to let you scrub a bit to remove any varnish, smoke, or other sticky substance. Works well on all the jacks mono,trs, as well as switching jacks. They seem to open the switching part as they go in letting whatever cleaner used get access to the normally closed contacts. <br /> Works great on tube sockets as well as those tiny midi ins as well.<br /> They normally don't leave anything behind, inexpensive and let you even get rust off of old contacts. After wards a bit of fader lube helps on the rusty ones.



thumbpicker

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St. Louis

"Thumbpicks don't slide into soundholes"
Dec 29th, 2017 05:08 PM        

The buttons seem to respond well to pipe cleaners as well if you can access the contacts.



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