Korg Poly800/EX800 Users

Hi everyone, I'm new to the group (and to the Poly 800).  I recently
bought one which was fully working, and undertook the two popular mods
("Moog Slayer" and FM-800) and replaced the battery.

Since these are pretty simple mods, and I'm pretty experienced with
this kind of thing, I overconfidently did them all at once (instead of
testing between each).  I think I did a very nice job of it but...

Somewhere along the way I seem to have killed something.  The keyboard
powers up and operates normally except...no oscillators.  The noise
generator is clearly working, the filter seems to be working normally
(on the noise), the mods are doing their thing, and obviously the
output section is working.  It seems the oscillators are dead.

All my work was done with great care...I am very experienced with a
soldering iron and circuit board work, and there is no visual
indication that anything was damaged along the way.  I was careful
about the potential for heat damage and static discharge.  I checked
and re-checked everything I did...the mods themselves are correct (and
seem to be working fine).  Still, clearly I did something to something!

I am not a scope-wielding super-tech...I am good with the mechanical
stuff, but my knowledge of electronics is basic.  So I'm hoping some
of you here (who clearly know WAY more than I do about this stuff)
might be able to help me out with diagnosing and fixing the problem. 
At the moment I scarcely know where to begin looking.

Anything you can tell me would be much appreciated.

Thanks in advance.

Hi everyone, I'm new to the group (and to the Poly 800). I recently
bought one which was fully working, and undertook the two popular mods
("Moog Slayer" and FM-800) and replaced the battery.

Since these are pretty simple mods, and I'm pretty experienced with
this kind of thing, I overconfidently did them all at once (instead of
testing between each). I think I did a very nice job of it but...

Somewhere along the way I seem to have killed something. The keyboard
powers up and operates normally except...no oscillators. The noise
generator is clearly working, the filter seems to be working normally
(on the noise), the mods are doing their thing, and obviously the
output section is working. It seems the oscillators are dead.

All my work was done with great care...I am very experienced with a
soldering iron and circuit board work, and there is no visual
indication that anything was damaged along the way. I was careful
about the potential for heat damage and static discharge. I checked
and re-checked everything I did...the mods themselves are correct (and
seem to be working fine). Still, clearly I did something to something!

I am not a scope-wielding super-tech...I am good with the mechanical
stuff, but my knowledge of electronics is basic. So I'm hoping some
of you here (who clearly know WAY more than I do about this stuff)
might be able to help me out with diagnosing and fixing the problem.
At the moment I scarcely know where to begin looking.

Anything you can tell me would be much appreciated.

Thanks in advance.

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Why didn't I think of that?

I loaded the sound bank and it works great now.  Thanks very much for
the simple solution!



--- In korgpolyex@yahoogroups.com, Marco Andreetta
<marco_andreetta@...> wrote:
>
> You have to reload the sound preset because you changed the battery
and lost them. Check in the files sections under preset&patches.
> 
> I suggest to load the original sound bank first (very nice resonant
patches and brass) and also to check the poly800 synthmania page:
> 
> http://www.synthmania.com/poly-800.htm
> 
> 
> 
> Trever Keith <antagonistrecords@...> ha scritto:                   
           Hi everyone, I'm new to the group (and to the Poly 800).  I
recently

>  bought one which was fully working, and undertook the two popular mods
>  ("Moog Slayer" and FM-800) and replaced the battery.
>  
>  Since these are pretty simple mods, and I'm pretty experienced with
>  this kind of thing, I overconfidently did them all at once (instead of
>  testing between each).  I think I did a very nice job of it but...
>  
>  Somewhere along the way I seem to have killed something.  The keyboard
>  powers up and operates normally except...no oscillators.  The noise
>  generator is clearly working, the filter seems to be working normally
>  (on the noise), the mods are doing their thing, and obviously the
>  output section is working.  It seems the oscillators are dead.
>  
>  All my work was done with great care...I am very experienced with a
>  soldering iron and circuit board work, and there is no visual
>  indication that anything was damaged along the way.  I was careful
>  about the potential for heat damage and static discharge.  I checked
>  and re-checked everything I did...the mods themselves are correct (and
>  seem to be working fine).  Still, clearly I did something to something!
>  
>  I am not a scope-wielding super-tech...I am good with the mechanical
>  stuff, but my knowledge of electronics is basic.  So I'm hoping some
>  of you here (who clearly know WAY more than I do about this stuff)
>  might be able to help me out with diagnosing and fixing the problem. 
>  At the moment I scarcely know where to begin looking.
>  
>  Anything you can tell me would be much appreciated.
>  
>  Thanks in advance.
>  
>  
>      
>                                
> 
>        
> ---------------------------------
> 
> ---------------------------------
> L'email della prossima generazione? Puoi averla con la nuova Yahoo! Mail
>

> Why didn't I think of that?

The correct question is: Why don't you think about putting a battery 
inside so you don't have to reload the sounds every time? ;)

Manu