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Subject: Re: [korgpolyex] Cleaning the EX-800 buttons

From: Jason Adkins <jason_ralf808@...>
Date: 2013-05-10

Hi Sami,you wrote:-
> I just joined because I got an EX-800 this year. I used to have Roland
> Juno-106, which was my only analogue synth for quite a long time.
>
never could afford a Juno106,almost a polyphonic SH101,nice machine
with good midi.

> Due
> to lack of time for music (and a need for second hand mountain bike)
>
Mountain bikes are good fun but not on the roads around here,deathwish
mate where I live,and developers have turned the wood where I live
next to into some kind of dog walking cess pit...
> I
> decided to sell it. But I learned the subtractive synthesis really
> well. What I learned with it has helped - and still does - with what
> ever tool I'm working with, freeware software plugins or other synths.
>
It still sounds better than any software synth version,
>
> EX-800 is not the easiest one for somebody that has learned to use a
> rich set of sliders or graphical interfaces! In order to take full
> advantage of it, the buttons MUST work correctly, or you can get quite
> frustrated. This unit had serious problem with buttons. But I cleaned
> them, and now they could as well be new. No glitches, no multiple
> triggering, they just work.
>
It certainly isn't,but it sounds great,I use the LFO's to give it
sweep and the sequencer is
brilliant,the LFO are not synced via midi but doing it manually is
half of the fun... ;)
>
> Firstly you need to open the case. The buttongs can be opened by
> bending the "locks" of the caps with small flat screwdriver. Then the
> inner part needs some forceful tweaking which made my fingertips sore.
> I tried pliers, but they always slipped. I used household rubber
> gloves in the end. I recorded parts of my procedure as a live webcast.
> It could give some hints, although I couldn't zoom in or focus close:
>
> http://bambuser.com/v/3508383
>
> This is not a serious video, it shows more my own clumsiness when
> trying to figure out what to do, but eventually (outside the video)
> the rest of the process went quite smoothly.
>
> I used a dry cleaning agent (for electronics components), screwdriver
> and finally cotton swabs for the button base contacts. The metal plate
> that works as a contactor and spring had pretty much the same process.
>
> I can try to answer to more questions if you are interested.
>
> --
> Sami Jumppanen
> [photo/music/blog/info] http://samijum.pp.fi
>
>
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