Discussion about the Korg PolySix synthesizer

Right, check the voltages at CN10! If you have a logic problem or scope you
will need to see if you have pulse trains on pins 1 to 14. A very common
problem is that you really do need to solder the connections on the top of
this socket as it is a right angled one and needs to be as strong as
possible. If you are getting logic levels at CN10 but nothing at the other
end on the right-hand top panel board, check where the coloured wires
terminate. They have a habit of snapping off whilst the lid is opened!

Cheers,
Andy


On 13/01/2011 19:33, "ML" <f115@rocketmail.com> wrote:

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> No, not even then. No 1-8 LEDs at any time.
> 
> --- In PolySix@yahoogroups.com <mailto:PolySix%40yahoogroups.com> , Andrew
> Jury <andy@...> wrote:
>> >
>> > I¹ve just been re-reading your post and you say that none of the LEDs light
>> > at all? Does A1 light when the P6 is first switched on and not in Œtest¹
>> > mode? 
>> > 
>> > Cheers,
>> > A
>> > 
>> > 
>> > On 13/01/2011 17:07, "ML" <f115@...> wrote:
>>> > >    
>>> > > 
>>> > > Hi Andy et al!
>>> > > 
>>> > > Here's what I have so far:
>>> > > 
>>> > > R56 - 14.95K
>>> > > R57 - 10.09K
>>> > > R73 - 0.995K
>>> > > R74 - 250.4
>>> > > R75 - 19.93K
>>> > > R83 - 1.796K (1/4 Watt though)
>>> > > R84 - 0.995K
>>> > > R85 - 4.63K
>>> > > 
>>> > > VR6 - W201 
>>> > > [http://canada.newark.com/jsp/search/productdetail.jsp?sku=62J1285]
>>> > > VR7 - W501
>>> > > [http://canada.newark.com/jsp/search/productdetail.jsp?sku=62J1293]
>>> > > 
>>> > > Test switch is positioned this way:
>>> > > - Normal: Open
>>> > > - Test Mode: 1 & 2 selected
>>> > > 
>>> > > Synth is set to default mode
>>> > > Manual mode isn't functioning in either normal or test mode so
>>> > > 
>>> > > IC33 DAC is DAC08CPZ #1014
>>> > > [http://canada.newark.com/jsp/search/productdetail.jsp?sku=59K7898]
>>> > > 
>>> > > I can pull R83 from an original board and I could certainly try to
>>> de-solder
>>> > > an original DAC too. I've had mixed results de-soldering ICs in the past
so
>>> > > I'm apprehensive (but willing).
>>> > > 
>> > 
>> > 
>> > 
>> > [Non-text portions of this message have been removed]
>> >
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