[sdiy] Polysix keys

[Gil W.]

Yep ! IC31 and IC30 are critical to many functions,
and are the first to get defected once the acid is
spreading over....

--- Tom Wiltshire <tom at electricdruid.net> wrote:

> The other likely faults on a sick polysix beyond the
> already- 
> mentioned battery leakage are:
> 
> 1) The bank and program switches. These tend to lose
> their caps and  
> often the switches themselves pack up too.
> 2) The keyboard contacts. These suffer like many
> cheap rubber-contact  
> keyboards, and repairs are done the same way -
> careful cleaning and  
> perhaps treatment with one of the products designed
> for the purpose.
> 
> It's amazing how many other weird faults on a
> polysix can actually be  
> due to battery leakage though - I've seen the sub
> oscillator  
> disappear, and the PWM only act as PW, for example.
> 
> The voice and effects boards actually seem to be
> pretty reliable, and  
> the power supplies aren't bad either.
> 
> Can anyone else think of anything else that I've
> forgotten?
> 
> T.
> 
> 
> On 15 Jan 2008, at 20:23, Bob Weigel wrote:
> 
> > The low C is the same as all other C's.  The HIGH
> C is full width  
> > and unique.  I only have one in stock and thought
> it was spoken  
> > for. -Bob
> >
> > Sean Ellis wrote:
> >
> >> Thanks for all the replies guys! Got quite a few
> offers but I need  
> >> the
> >> lowest C key, it appears the end keys are
> different to the rest.
> >>
> >> -----Original Message-----
> >> From: synth-diy-bounces at dropmix.xs4all.nl
> >> [mailto:synth-diy-bounces at dropmix.xs4all.nl] On
> Behalf Of Martin  
> >> Pavlas
> >> Sent: Monday, January 14, 2008 9:00 PM
> >> To: synth-diy at dropmix.xs4all.nl
> >> Subject: Re: [sdiy] Polysix keys
> >>
> >> Hi,
> >>
> >> Senso from www.vintageplanet.nl seems to have
> them. Check that out.
> >>
> >> --
> >> martin
> >>
> >>
> >>
> >> Sean Ellis wrote:
> >>
> >>> I am picking up a sick polysix that is missing a
> key and has some  
> >>> other unknown problems, probably due to battery
> leakage. Does  
> >>> anyone know a source for a replacement key?
> >>>
> >>> It's great to have Scott Rider's excellent
> polysix repair page  
> >>> (here:
> http://www.oldcrows.net/~oldcrow/synth/korg/polysix/
> 
> >>> index.html ), looks like I'll be needing it very
> soon :) Not sure  
> >>> if Scott is on this list but I'm curious about
> the missing page  
> >>> labeled "Give your Polysix a Korg PS3100-Style
> Triple resonant  
> >>> filter". Sounds very interesting but the
> schematics for the  
> >>> Polysix are a nightmare to read.
> >>>
> >>>
> >>> _______________________________________________
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> >>>
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> >>>
> >>
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> >>
> >>
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> 
> 
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