Discussion about the Korg PolySix synthesizer

What IC is the memory?

Sent from my iPad

28 feb 2012 kl. 15:15 skrev "Bruno BzH" <kroutshev@hotmail.com>:

> 
> Hi,
> you have probably your memory ic which is out of order, follow the traces and try to test it.
> 
> Regards
> Bruno
> 
> To: PolySix@yahoogroups.com
> From: darijo@technogenic.se
> Date: Tue, 28 Feb 2012 13:13:04 +0000
> Subject: [PolySix] Battery leak problem.
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
>      Hi,
> 
> 
> 
> I have tried to fix my Polysix that had a battery leak.
> 
> Before i started to repar the problem was that no button was working (for memory and tape) and allmost all the LEDs was turned on.
> 
> 
> 
> After I removed the battery and IC30 and IC31 I cleaned the board and started to repair the traces with new wires. And then I started to messaure the traces and everything seems to be looking fing.
> 
> 
> 
> I then installed the card in the Polysix again and turned it on. All buttons works fine and the only LEDs that are turned on are 7 and 8 if the Tape switch is in Tape Disable. If I change Tape Disable to Enable only LED 8 is always on.
> 
> 
> 
> I can save sounds, but only 4.
> 
> memory 1 and 5 save same sound 
> 
> memory 2 and 6 save same sound 
> 
> memory 3 and 7 save same sound 
> 
> memory 4 and 8 save same sound
> 
> 
> 
> Does anyone know and can help me with what trace should I look at to get rid of this problem?
> 
> 
> 
> I have followed oldcorwn.nets guide alot in this case.
> 
> 
> 
> Here's two photos of the LEDs
> 
> 
> 
> Tape Enable:
> 
> http://www.flickr.com/photos/technogenic/6791701954/
> 
> 
> 
> Tape Disable:
> 
> http://www.flickr.com/photos/technogenic/6937820405
> 
> 
> 
> Reagards.
> 
> D
> 
> 
> 
> Sent from my iPad
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
>                            
> 
> [Non-text portions of this message have been removed]
> 
> 
> 
> ------------------------------------
> 
> Yahoo! Groups Links
> 
> 
>