Discussion about the Korg PolySix synthesizer

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