Synth-DIY Yahoo! Groups Archives

Thread

emax1 key repair

2009-12-09 by Bob

There are two keys on my Emax 1 that no longer work although I can still access the notes via midi. Has anyone had a similar problem and been able to fix it? 

Thanks for any advice.

Bob

Re: emax1 key repair

2009-12-09 by emax_dx5

Key contacts are springs. It could happen the spring has broken (they tend to deforming after years).
They suffer of carbon too. Maybe a cleaning with isopropylic alcohol could fix it.
An adjustment in the spring level screw could be the goal too.



--- In emax@yahoogroups.com, "Bob" <midimal_music@...> wrote:

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>
> There are two keys on my Emax 1 that no longer work although I can still access the notes via midi. Has anyone had a similar problem and been able to fix it? 
> 
> Thanks for any advice.
> 
> Bob
>

Re: [emax] emax1 key repair

2009-12-09 by jammie

dirty contacts just use some deoxit and a cotton wool bud

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  ----- Original Message ----- 
  From: Bob 
  To: emax@yahoogroups.com 
  Sent: Wednesday, December 09, 2009 10:23 AM
  Subject: [emax] emax1 key repair


    
  There are two keys on my Emax 1 that no longer work although I can still access the notes via midi. Has anyone had a similar problem and been able to fix it? 

  Thanks for any advice.

  Bob



  


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Re: [emax] emax1 key repair

2009-12-10 by Patrick R

This could also be a shorted out pathway. I had this issue and used emery cloth to sand down the insulator over the pathway, cleaned the pathway and sealed it. For me this repaired the critical middle C range of keys. You may need complete the circuit if the pathway is extremely damaged or broken. Great thing about old tech is it is macro and not micro circuitry, and easy to repair. Don't forget to disconnect the keyboard from the rest of the unit. That way if you have some static build-up or otherwise cause problems, you won't kill the all important ICs.

Good luck!



________________________________

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From: jammie <jammie.emma@...>
To: emax@yahoogroups.com
Sent: Wed, December 9, 2009 6:34:45 AM
Subject: Re: [emax] emax1 key repair

  
dirty contacts just use some deoxit and a cotton wool bud
----- Original Message ----- 
From: Bob 
To: emax@yahoogroups. com 
Sent: Wednesday, December 09, 2009 10:23 AM
Subject: [emax] emax1 key repair

There are two keys on my Emax 1 that no longer work although I can still access the notes via midi. Has anyone had a similar problem and been able to fix it? 

Thanks for any advice.

Bob

------------ --------- --------- --------- --------- --------- -

No virus found in this incoming message.
Checked by AVG - www.avg.com 
Version: 8.5.426 / Virus Database: 270.14.98/2552 - Release Date: 12/08/09 07:34:00

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Re: [emax] emax1 key repair

2009-12-10 by Bob King

Thanks guys: I'll give it a go over the week end.

Bob

--- On Thu, 10/12/09, Patrick R <designlord@...> wrote:

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From: Patrick R <designlord@yahoo.com>
Subject: Re: [emax] emax1 key repair
To: emax@yahoogroups.com
Date: Thursday, 10 December, 2009, 1:11







 



  


    
      
      
      This could also be a shorted out pathway. I had this issue and used emery cloth to sand down the insulator over the pathway, cleaned the pathway and sealed it. For me this repaired the critical middle C range of keys. You may need complete the circuit if the pathway is extremely damaged or broken. Great thing about old tech is it is macro and not micro circuitry, and easy to repair. Don't forget to disconnect the keyboard from the rest of the unit. That way if you have some static build-up or otherwise cause problems, you won't kill the all important ICs.



Good luck!



____________ _________ _________ __

From: jammie <jammie.emma@ blueyonder. co.uk>

To: emax@yahoogroups. com

Sent: Wed, December 9, 2009 6:34:45 AM

Subject: Re: [emax] emax1 key repair



dirty contacts just use some deoxit and a cotton wool bud

----- Original Message ----- 

From: Bob 

To: emax@yahoogroups. com 

Sent: Wednesday, December 09, 2009 10:23 AM

Subject: [emax] emax1 key repair



There are two keys on my Emax 1 that no longer work although I can still access the notes via midi. Has anyone had a similar problem and been able to fix it? 



Thanks for any advice.



Bob



------------ --------- --------- --------- --------- --------- -



No virus found in this incoming message.

Checked by AVG - www.avg.com 

Version: 8.5.426 / Virus Database: 270.14.98/2552 - Release Date: 12/08/09 07:34:00



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