Discussion about the Korg PolySix synthesizer

Viewing ic 30.31, 21 can not be good

 

!!! to the card clone are bug

 

https://sites.google.com/site/jedjorgensen/klm367a/images/pcb-bugs-errors

 

Sheet resistance for 56k I retrieves small connectors

USB to an old pc case weld strength

 

 

 

http://audio.synth.vintage.free.fr/images/synthe/korg/polysix_2eme/outi_56k_
reglage.jpg

http://audio.synth.vintage.free.fr/modules.php?name=Forums&file=viewtopic&p=
328&sid=d26dcc3a67fb356186e8659daebdae89#328

http://audio.synth.vintage.free.fr/modules.php?name=Forums&file=viewtopic&t=
92#339

 

De : PolySix@yahoogroups.com [mailto:PolySix@yahoogroups.com] De la part de
tuk88@rocketmail.com
Envoyé : jeudi 21 juin 2012 00:31
À : PolySix@yahoogroups.com
Objet : [PolySix] Problems KLM-367 clone

 

  

Hi everybody !

First of all, I would like to thank's Jed and all the team for the good job
done !

I purchased the clone PCB some month ago and I assembled the board these
last weeks. I try it but, unfortunely, the P6 has some probs :

1) At the start, the MG LED blink slowly and goes faster until to stay up.

2) The programmer knobs don't respond.

3) I try to calibrate the P6, but without the 56k resistor plug on the power
supply board, the LED 5 and 8 are alight.

4) In test mode, the programmer knobs respond

5) I think, there is no sound change when I play with the different knobs
(sorry I'm just an electronician guitarist who like to fix up some hold
stuff =) )

My differents readings of these group let me think that the problems 2 and 3
come from the DAC08. Regarding the MG LED, I don't really know because I
fixed the 2 bugs on the PCB board.

So before trying to fix all these issues, I've just some questions :

- Is it really necessary to fill the metallized vias ?

- Is there a procedure to check the good functions of the board with the
different test points ?

Thank's a lot for the help

Lucas





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