In article
<
f02fa18e-857d-4920...@gi10g2000vbb.googlegroups.com>,
It looks like the signal from the "blue" sensor is intermittent --
except for that stripe halfway down, it's not getting through. This is
probably due to a loose connector, a broken wire or failed solder joint,
but possibly something else. In any case, the break is inside the
scanner, very possibly in or around the flexible cable that connects to
the traveling scan head.
If you can get the scanner apart, a close visual inspection might
indicate how it could be fixed.
Isaac