Discussion about the Korg PolySix synthesizer

Please check the both IC's too. If one of these are damaged, you get the
same strange effects. As I started with repairing my polysix I had the same
strange problems.

Some knobs aren't working and the patch led and lighted up in a wrong order
and something like that.

I replaced the battery, ic31 and repaired the traces. Now all was working
very well.

I think its definitely the battery problem. 

 

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Von: meathooke [mailto:meathooke@aol.com] 
Gesendet: Donnerstag, 1. Juli 2004 00:19
An: PolySix@yahoogroups.com
Betreff: [PolySix] Another Polysix with problems...What a surprise!!

 

Here's the run down.  There is no manually controllable pulse wave.  
The saw works as does the PWM, but when I select the normal Pulse 
wave the width, somehow, is still modulated by the PWM's LFO.  Next, 
the VCA attenuator has absolutely no effect on the amplitude what-so-
ever.  The LED's for Bank D and Patch 4 are constantly lit.  
Occationally, when I turn on the power all of the LED's stay on.  As 
for the Effects, when turned off it still sounds as if the Ensemble 
is on.  The Speed/Intensity knob only works in certain possitions and 
with certain effects.  That about sums up the problems that I am 
having with it.  I know that most problems seem to occur on account 
of battery leakage and I have not gotten to inspect that area fully 
yet.  I do know, however, that the battery has been replaced and for 
some reason the large black ground wire was not resoldered to the 
board. It was just taped off...seems rather odd to me. This has a 
midi retrofit (from Korg)and I didn't know if that was the reason for 
not resoldering the ground wire.  By the way, does anyone know where 
I might find an owner's manual for the retrofit? Anyway, I figure, 
aside from double checking for trace damage, that replacing the pots 
and switches is a good place to start, but I thought I would get some 
other opinions before dismantling the synth.  Any ideas?
Thanks,
Meathooke   




PolySix "Digiest" Page: http://www.acc.umu.se/~amber/Poly6 






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