It's me again. I found a tiny little dot of acid on one of those points
in CN06 connector. This is the area where the upper boards of
controls&knobs are connected to the main cpu board as you know. Could
that be the culprit of my memory problem ? Maybe 'Write Enable' track
goes through one of these points ? See picture:
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http://img95.imageshack.us/my.php?image=poly6boardij0.jpg ]