Discussion about the Korg PolySix synthesizer

Thanks Bob for your quick answer !

Seems that my patch looses "EG" from memory. I have no sound unless I put the VCA switch from EG back to "square" again to get some sound. 
Not sure to keep the bank memory even when polysix is still on.

I did the procedure and it passes directly. Here a quick summary:
*dummy 56 ohm => all leds on
*remove resistance => A1 leds
*SW1 in test mode and tape switch to enable => Only leds 1+8 on 
* SW1 back to normal => still leds 1+8
* "7 ) confirm that output DC click noise is within 6V p-p when power is switched off" => sorry I don't understand precisely what to do/ measure?
 * Power on again => A1 leds on.
 
Thanks for your support 
Phil

 
--------------------------------------------
En date de : Mer 28.5.14, Bob Grieb bobgrieb@yahoo.com [PolySix] <PolySix@yahoogroups.com> a écrit :

 Objet: Re: [PolySix] EG and VCF not working after battery leakage
 À: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com>
 Date: Mercredi 28 mai 2014, 2h09
 
 
 See if
 these functions can be controlled correctly when using
 patchesin
 memory.  If so, then the output from the CPU to the analog
 circuitsis
 OK.   Then you have a problem with reading the
 controls.But
 if the sound is always the same with all programs, then the
 
 output
 circuit is bad and maybe t is reading from the pots
 OK.Did
 you try the DAC calibration test in the manual?  It would
 be helpfulto
 know if that is working OK.  Just the part where you try to
 get the 
 two
 LEDs to light up.
  
 Bob
  
        
 From:
 "phil0065@yahoo.fr [PolySix]"
 <PolySix@yahoogroups.com>
  To:
 PolySix@yahoogroups.com 
  Sent: Tuesday, May 27,
 2014 6:02 PM
  Subject: [PolySix] EG
 and VCF not
  working after battery leakage
  
  
 
 
       
       Bonjour !I am
 French
 and happy to join this group of Polysix owner. My old
 Polysix bought back in
 1983 has been sleeping in the attic since 1990, until I have
 returned back now to
 my first love. Unfortunately I have discovered the battery
 leakage problem !
 So I did
 the standard procedure (like many)Spend a
 lot of time checking the lines on KLM-367 with plenty of leds on at start
 up.. Browse internet for hours (discover service
 manual, old crown, etc)…, change IC
 30 & 31 … recheck continuity, still few leds
 on..Recheck again, change all set of
 panel switches (vintage planet)..4 leds on... Bank B not
 working...Check
 lines again, to get finally only leds A1
 on start up. Great !
 Unfortunately sound
 is not OK.
 Tune seems
 OK,
 6 voices are OK, voltages from power board are OK (15V, 5V
 -5V and -15V) all pots
 and switches seem to work except the 4x EG and 4x VCF pots
 which are not
 active! I think at
 this stage it is useless to do the calibration procedure. Is
 there some indications,
 checking to start with to define if it is still a
 line/continuity problem or if electronic parts (IC, diode..)
 should be changed.
 Thanks in
 advance for your help
 
 
  Phil