[sdiy] Repair part question, Korg DDM-110/220 buttons

[Nathan Trites]

oops - dropped the l in html:
https://www.aliexpress.us/item/2251832670410296.html

Nathan

On Mon, Jul 15, 2024 at 6:58 PM Benjamin Tremblay <btremblay at me.com> wrote:

> That link does not seem to work with www.aliexpress.us
>
> On Jul 15, 2024, at 6:02 PM, Benjamin Tremblay via Synth-diy <
> synth-diy at synth-diy.org> wrote:
>
> They are … maybe 80% the size of a keyboard switch. I was able to clean
> and repair these without a hitch.
>
> Benjamin Tremblay
>
> On Jul 15, 2024, at 4:59 PM, Nathan Trites <nathan at idmclassics.net> wrote:
>
> 
> Hi Benjamin,
>
> Can't see how tall they are in the pic but looks like it could be an old
> generic of an ALPS or NEC switch. I found what might be the same thing on
> Ali Express but no part number:
> https://www.aliexpress.com/item/32856725048.htm
>
> If no one here can correctly ID them, it might be worth checking into the
> mechanical keyboard scene - the low profile ALPs, NEC, and KPT switches all
> look very similar to this, and there are some in the big photo on the
> following blog post that look like they could be a match. Of course it's a
> guy named ThereminGoat :)
> https://www.theremingoat.com/blog/1001-switch-nights-tales-from-the-collection
>
> Nathan
>
> On Sat, Jul 13, 2024 at 9:37 AM Benjamin Tremblay via Synth-diy <
> synth-diy at synth-diy.org> wrote:
>
>> Hi, I got me a Korg Super Drums off eBay.
>> It looks just like the one I had in 1985 before I went crazy with the
>> soldering iron and circuit bent the clock.
>> It was DOA. I was about to give up on it when I noticed hairline cracks
>> around one screw hole in the board. Was able to fix them and then it booted
>> up properly.
>> But it still seemed dead. Until I almost accidentally closed one of the
>> switch contacts with a tool, and it responded. (In fact it’s so snappy I
>> could be lazy and trigger the switches with MIDI via 4066 ics and it would
>> probably respond at a high speed.)
>>
>> Looks like very fine hair and dust, like Persian cat dander, is coated
>> around the knobs and switches.
>> So anyway I found this link on polynomial showing how to crack the
>> switches apart and clean them with a q-tip. I have some black goo I used to
>> permanently fix an Alesis MMT-8 and so I intend to coat the rubber contacts
>> with this good stuff.
>>
>> But just wondering: Does anyone know what kind of switch this is? (See
>> photo on polynomial Repair Blog). To me it looks too good to not be an
>> Alps, but it’s not a keyboard switch, is it?
>> Whatever it is it’s kinda cool, as long as you don’t have cats.
>>
>> It seems like a lot of these kinds of parts have vanished from the
>> storage bins and there’s nothing that would take its place.
>>
>> Ben
>> ________________________________________________________
>> This is the Synth-diy mailing list
>> Submit email to: Synth-diy at synth-diy.org
>> View archive at: https://synth-diy.org/pipermail/synth-diy/
>> Check your settings at: https://synth-diy.org/mailman/listinfo/synth-diy
>> Selling or trading? Use marketplace at synth-diy.org
>>
> ________________________________________________________
> This is the Synth-diy mailing list
> Submit email to: Synth-diy at synth-diy.org
> View archive at: https://synth-diy.org/pipermail/synth-diy/
> Check your settings at: https://synth-diy.org/mailman/listinfo/synth-diy
> Selling or trading? Use marketplace at synth-diy.org
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://synth-diy.org/pipermail/synth-diy/attachments/20240715/9a421c47/attachment.htm>