Discussion about the Korg PolySix synthesizer

Hi,

 

There are a couple of things I have noticed which improves the longevity of
a Polysix key contacts repair, without going to the lengths of covering
everything in silver foil.

 

1.       Make sure the gold contacts on the base PCB are clean and free from
any of the lacquer which was used in the factory to treat the green side of
the board. I have found that sometimes after handling this can get onto the
contacts and cause problems.

2.       When you clean the black carbon contacts on the rubber pads make
sure the finish on them is mat black with no 'imprint' of the tracks which
they touch when depressed.

3.       I always use the following solvent which has very good electrical
properties creates a good anti-oxidizing seal: Mykal DSI5000CCP.
http://www.mykal.co.uk/pages/electrical_cleaning_contact_cleaner_protector.h
tm. I am assuming they sell this or something similar in the US.

 

Being meticulous when servicing the keyboard is the most important thing!

 

Cheers,
Andy

 

 

From: PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] On Behalf Of
wasteking1
Sent: 04 June 2009 12:05
To: PolySix@yahoogroups.com
Subject: [PolySix] key contacts

 






i have cleaned the key contacts on my polysix probably 4 or 5 times even
using diffrent solvents at times. I always get everything back and
everything is fine , then after some storage time some keys stop again ...i
can get them back by fast repeated pressing and then they work fine for the
playing session, but some of the contacts loose it over storage again. I
wonder id the problem is NOT in the cleaning , but something else. How can
they get so dirty so fast? Can they oxidize overnight? or is the problem one
of alignment of the disks or the stiffenning of the rubber contact holder?
this is frustrating and just doecnt make sense as a cleaning issue.. the
principle is very basic, 2 conductive pieces touch ---and they DO WORK, just
sluggish to respond. 





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