Korg Poly800/EX800 Users

All my contact switches on the KLM-614 seem to be non functional, I de-soldered a few of them, checked continuity between contacts but they don't work, tried to pull them apart to clean but it seems impossible.

I tried sourcing the Fujisoku TM1 switches but they seem to be either non existing or too expensive.

I'm thinking of maybe laying out a new board with illuminated switches unless I can find an alternative pushbutton tact switch.

any info appreciated

thx

On Sun, Jan 24, 2016 at 01:37:41PM -0800, studio_1a@... [korgpolyex] wrote:
> All my contact switches on the KLM-614 seem to be non functional, I de-soldered a few of them, checked continuity between contacts but they don't work, tried to pull them apart to clean but it seems impossible. 
>  I tried sourcing the Fujisoku TM1 switches but they seem to be either non existing or too expensive. 
>  I'm thinking of maybe laying out a new board with illuminated switches unless I can find an alternative pushbutton tact switch.
>  
> 
>  any info appreciated
>  thx

Are they not just ordinary 6mm tact switches?  Post a pic of what you're looking for.

-- 
Gordonjcp MM0YEQ

On Sun, Jan 24, 2016 at 02:25:24PM -0800, studio_1a@... [korgpolyex] wrote:
> What a drag!! no they are not regular 6mm tact switch. not only that, the top bezel is offset from the switch itself. see pic

You'll probably need to post it to imgur or similar, since the list strips attachments.

-- 
Gordonjcp

Which switches work and which ones don't? Be specific.
While it is possible for the switches themselves to have problems. And we have a document for how to clean them if you check out the EX800 servicing section of the files area of this group.
It is also very possible that your wiring harness, the connectors, the wiring plugs on the main board or even the matrix switching chips may have faults.
So before you go tearing yourself up looking for a switch that simply is NOT available anywhere on planet earth, tell us which switches are not working and which ones are.
Also tell us if they sometimes work if you push harder on some of them.
Also go read our PDF on how to service them.
/Mike

 

      From: "studio_1a@... [korgpolyex]" <korgpolyex@yahoogroups.com>
 To: korgpolyex@yahoogroups.com 
 Sent: Monday, January 25, 2016 4:21 AM
 Subject: Re: [korgpolyex] Looking for EX800 KLM-614-1 schematic / board layout
   
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