The cause of the problem is that the conductive rubber looses its
conductivity by drying out. You can improve a little by cleaning,
but it will soon be back to errornous behaviour. So the only real
fix is to make the rubber surface conductive again. There may
exist several methods for that - I found the aluminium foil method
is cheap and working well.
hoggybogger wrote:
> Now there is something I can believe in! I will try your repair
> Johannes this weekend and post my results. I will also try an eraser
> to remove the coating from pads (not the PCB side but the black parts
> on the rubber nubbies (I need to learn the correct terminology
> here :) ))
>
> And then clean them with alcohol, luckily I have some 99% isopropyl
> around and some lint free wipes, should be good for the PCB and the
> nubbies. Alright I'll post my results after I do it, thanks.
>
>
>
> --- In PolySix@yahoogroups.com, Johannes Hausensteiner <johau@...>
> wrote:
>> I have successfully used a different method. I used it on the
> Polysix,
>> which still works all keys, and on several VCR [..] remote controls.
>> Go to the message archive of the list
>> (http://launch.groups.yahoo.com/group/PolySix/)
>> and search for "keyboard repair". You find a description in some of
> my
>> posts (the original post is no. 305).
>>
>> Johannes
>>
>> hoggybogger wrote:
>>> Hey all. About a year or more ago I was having occasional
> dropouts on
>>> certain notes, and some notes that I had to push just right, or
> really
>>> hard to get to sound.
>>>
>>> I did some digging and came across the MG Checmicals Keypad Repair
>>> Kit, as recommended by a number of synth dudes. The link for it
> is
>>> here, I'm sure many of you have seen this
>>> http://www.mgchemicals.com/products/8339.html
>>>
>>> I applied the repair and the keys were working great, but after a
> six
>>> month or more break from using the synth I'm having the problem
> again,
>>> where some keys have to be pushed just right to trigger. I blew
> the
>>> area out with some compressed air, that didn't help anything.
>>>
>>> I'm wondering if anyone has applied a keypad repair solution of
> any
>>> sort, and then had to fix it ∗again∗ with any results? And also
> if
>>> anyone has any tips on what to do from here. It seems that
> applying
>>> another coat might not be the best idea, and I wonder if there
> might
>>> be some solution to remove the coat and start over? Or something
> else
>>> entirely.
>>>
>>> And of course, my band has a show tonight, it's our record release
>>> show/party. I've already completely sampled the patches I cannot
>>> emulate in any way with my other synths, and am playing them on my
>>> Triton. But do you realize how much synth-nerd cred I'm losing
> here
>>> by playing a sampled version? What if someone notices? Then I'm
> done
>>> for!!! :) Just kidding on that.
>>>
>>>
>>>
>>> ------------------------------------
>>>
>>> PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6Yahoo!
> Groups Links
>>>
>>>
>
>
>
> ------------------------------------
>
> PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6Yahoo! Groups Links
>
>
>