Discussion about the Korg PolySix synthesizer

Hm I cleaned up all the trimpots....

I rather would like to know which IC could be wrong

thanks a lot for reply....

Gregor

> Are you refering to the trimpot on the computer board ?
> 
> I don't know very much about it but on my Trident it did the same 
> when I set it to a cetrain position. This is how it was when I first 
> got it - powered it up and all banks/presets lite up. By ritating the 
> trimmer a bit it booted up correctly finally (bank 1 / preset 1)
> 
> 
> --- In PolySix@yahoogroups.com, "u3dreal" <u3dreal@y...> wrote:
> >
> > Hello all;
> > 
> > I bought a polysix in rather bad condition...
> > 
> > I did the batteryreplacements and checked to circuits...they seem to
> > be OK for both sides of teh PCB 
> > ...many things were still wrong then I replaced the IC31...and the 
> octave 
> > knob and the sub osc were working again.
> > 
> > The Controls are better now but still don't work correctly..
> > 
> > the MG....Delay doesn't work at all and Level gets controlled by the
> > VCO PW/PWM knob...? the EG doesn't seem to work either..
> > only the sustain can be controlled via the LFO resonance knob..
> > 
> > all the other things like the preset section / loading saving 
> progamms
> > or even sending and receiving banks form external casset recorder
> > works....!!!!!
> > 
> > when i try to do the testing procedure with the 56k resistor...the 
> > following happens.....when i turn the trim clockwise there is a 
> point 
> > where is jumps from bankA prog1 to all eight proglights.....this 
> doesn't 
> > happen 
> > for me the two first ( prog 1+2) don' light...sometimes 
> > its only the first one which doesn't light...
> > when i remove the resistor it switches back to prog1 bankA
> > 
> > I have no idea what could be wrong...could it be IC30 or even the 
> > processor ?? Did you have something simlar ? 
> > 
> > How much would a new proc cost?
> > 
> > I really would aprichiate it a lot if you could give me some 
> advice...
> > 
> > 
> > thanks in advance
> > 
> > Gregor
> >
> 
> 
> 
> 
> 
> 
> 
> PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6 
> Yahoo! Groups Links
> 
> 
> 
>  
> 
> 



	

	
		
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