Discussion about the Korg PolySix synthesizer

Hi Everybody!

I have a problem with my PolySix regarding saving patches.
There are already some presets in SRAM, but i'm unable to overwrite 
it. I checked KLM-367 board and it seems that WriteEnable signal, 
from IC22, Pin 10 never goes to 0, to enable writing to SRAM
i doble checked it with Mutimeter and Logic Analyzer.
Since SRAM acctualy holds presets, i doubt this chip (IC32) is bad.

When i press Write the LED blinks, and when i choose program to write 
to - LED stops blinking, as it should, but the program is not 
overwritten.

There was a battery leakage, but previous owner fixed it.
I also checked those fixed connections and everything seems to be ok.

It seems that everything else is working OK.

Any suggestions are welcome!

Thank you and best regards,
Peter