Discussion about the Korg PolySix synthesizer

hey folks, first of all thanks to all of you who helped me with my SRAM chip issue. i got a 5514, and the current draw is proper, it now holds the memory, no battery draining issues.

so i took this on the road, and the MG (LFO) section starting malfunctioning. issues:

-the RATE pot doesnt throw from roughly 0hz-10hz. it now goes from 0 to about 3 or 4hz midway and then back to 0hz at the end of the throw.

-the 3-way destination switch only works at VCF

-these malfunctions affect the presets. so any of the patches i had written that had VCO modulated by the MG are now rendered moot.


any ideas? i have had CMOS chips fail in other Korg instruments of this era; possibility? thanks alot for the help-rj

Hi,

First of all check that you have -5vc at IC13 pin 7 with the MG speed pot
fully counter clockwise. Fully clockwise you should have +5v at the same
point. Any deviation means you should be looking at the mux bus or, dare I
say it, the pot itself!  Buzz back and let us know...

Cheers,
Andy


On 23/01/2010 21:38, "r_j_d_2.phila" <r_j_d_2.phila@yahoo.com> wrote:

>  
>  
>  
>    
> 
> hey folks, first of all thanks to all of you who helped me with my SRAM chip
> issue. i got a 5514, and the current draw is proper, it now holds the memory,
> no battery draining issues.
> 
> so i took this on the road, and the MG (LFO) section starting malfunctioning.
> issues:
> 
> -the RATE pot doesnt throw from roughly 0hz-10hz. it now goes from 0 to about
> 3 or 4hz midway and then back to 0hz at the end of the throw.
> 
> -the 3-way destination switch only works at VCF
> 
> -these malfunctions affect the presets. so any of the patches i had written
> that had VCO modulated by the MG are now rendered moot.
> 
> any ideas? i have had CMOS chips fail in other Korg instruments of this era;
> possibility? thanks alot for the help-rj
> 
>  
>    
> 
> 



[Non-text portions of this message have been removed]

hi-thanks alot for this. sorry, just to clarify, are we talking IC13 on which board? thanks, rj

--- In PolySix@yahoogroups.com, Andrew Jury <andy@...> wrote:

>
> Hi,
> 
> First of all check that you have -5vc at IC13 pin 7 with the MG speed pot
> fully counter clockwise. Fully clockwise you should have +5v at the same
> point. Any deviation means you should be looking at the mux bus or, dare I
> say it, the pot itself!  Buzz back and let us know...
> 
> Cheers,
> Andy
> 
> 
> On 23/01/2010 21:38, "r_j_d_2.phila" <r_j_d_2.phila@...> wrote:
> 
> >  
> >  
> >  
> >    
> > 
> > hey folks, first of all thanks to all of you who helped me with my SRAM chip
> > issue. i got a 5514, and the current draw is proper, it now holds the memory,
> > no battery draining issues.
> > 
> > so i took this on the road, and the MG (LFO) section starting malfunctioning.
> > issues:
> > 
> > -the RATE pot doesnt throw from roughly 0hz-10hz. it now goes from 0 to about
> > 3 or 4hz midway and then back to 0hz at the end of the throw.
> > 
> > -the 3-way destination switch only works at VCF
> > 
> > -these malfunctions affect the presets. so any of the patches i had written
> > that had VCO modulated by the MG are now rendered moot.
> > 
> > any ideas? i have had CMOS chips fail in other Korg instruments of this era;
> > possibility? thanks alot for the help-rj
> > 
> >  
> >    
> > 
> > 
> 
> 
> 
> [Non-text portions of this message have been removed]
>

Sorry, yes, the KLM367...

A


On 24/01/2010 03:10, "r_j_d_2.phila" <r_j_d_2.phila@yahoo.com> wrote:

>  
>  
>  
>    
> 
> hi-thanks alot for this. sorry, just to clarify, are we talking IC13 on which
> board? thanks, rj
> 
> --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , Andrew
> Jury <andy@...> wrote:
>> >
>> > Hi,
>> > 
>> > First of all check that you have -5vc at IC13 pin 7 with the MG speed pot
>> > fully counter clockwise. Fully clockwise you should have +5v at the same
>> > point. Any deviation means you should be looking at the mux bus or, dare I
>> > say it, the pot itself!  Buzz back and let us know...
>> > 
>> > Cheers,
>> > Andy
>> > 
>> > 
>> > On 23/01/2010 21:38, "r_j_d_2.phila" <r_j_d_2.phila@...> wrote:
>> > 
>>> > >  
>>> > >  
>>> > >  
>>> > >    
>>> > > 
>>> > > hey folks, first of all thanks to all of you who helped me with my SRAM
>>> chip
>>> > > issue. i got a 5514, and the current draw is proper, it now holds the
>>> memory,
>>> > > no battery draining issues.
>>> > > 
>>> > > so i took this on the road, and the MG (LFO) section starting
>>> malfunctioning.
>>> > > issues:
>>> > > 
>>> > > -the RATE pot doesnt throw from roughly 0hz-10hz. it now goes from 0 to
>>> about
>>> > > 3 or 4hz midway and then back to 0hz at the end of the throw.
>>> > > 
>>> > > -the 3-way destination switch only works at VCF
>>> > > 
>>> > > -these malfunctions affect the presets. so any of the patches i had
>>> written
>>> > > that had VCO modulated by the MG are now rendered moot.
>>> > > 
>>> > > any ideas? i have had CMOS chips fail in other Korg instruments of this
>>> era;
>>> > > possibility? thanks alot for the help-rj
>>> > > 
>>> > >  
>>> > >    
>>> > > 
>>> > > 
>> > 
>> > 
>> > 
>> > [Non-text portions of this message have been removed]
>> >
> 
>  
>    
> 
> 



[Non-text portions of this message have been removed]