Hi-
you don't mention if you've checked the front panel "write enable" switch --
if the switch is physically bad (or needs to be cleaned), or if the signals
from that switch (P12 & D07?) are being shorted or otherwise compromised
(possibly by the battery-leak damage), it could result in what you've observed.
~G
At 11:07 PM 9/15/03 +0000, you wrote:
>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
>
>
>
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