Discussion about the Korg PolySix synthesizer

Andy,

Here are links to pics of the Polysix boards in question:

369 : Loose Blue wire and cut trace:
http://www.asurarecords.com/pics/polysix/IMG_1776.JPG


367 :  Here is the build I have been working on, do note that Mouser sent some of the Metal-oxide resistors that are 1/2 watt vs 1/4 watt. There are 4 installed. I may go find 1/4 watt to replace but did not think this factor would affect the board. If I am wrong please let me know ;) If you see anything else send me a note.

http://www.asurarecords.com/pics/polysix/IMG_1779.JPG
http://www.asurarecords.com/pics/polysix/IMG_1794.JPG
http://www.asurarecords.com/pics/polysix/IMG_1795.JPG
http://www.asurarecords.com/pics/polysix/IMG_1796.JPG

Thanks!
Daniel

--- In PolySix@yahoogroups.com, Andrew Jury <andy@...> wrote:
>
> Daniel,
> 
> Do you mean R2? This is in the MG routing circuit! Suffice to say you
> description of the reset adjustment sound correct. If the top panel controls
> are set to default and you switched the Œ367 to test, but you can¹t get the
> LEDs to positions 1 and 8 then have a very carefully examination of the
> circuitry around IC33. If you have a logic probe confirm you have a pulse
> train on data bus DO0-7 (pins 5 to 12). Also carefully verify all the
> resistive values of the components around IC27 and make sure C28 is
> correctly polarised. Also test the continuity of the test switch! If you
> want a second eye on the board take a shot close up and post it for us to
> see. Someone eagled eyed might see the problem.
> 
> If you still can¹t spot the problem. Let me know and I will measure some
> voltages from a working board for you to compare with.
> 
> On my P6 the blue wire is tacked onto the left-hand side of J2. D1 is part
> of a current limiting circuit before final 5v rail output. Therefore, D1
> should not be directly connected to the blue wire! The best place is either
> as I have described or sometime there is a pad on the output 5v rail in the
> top left-hand corner of the PSU.
> 
> Hope this helps,
> Andy