Bright line on Nikon 4000 scans

  • Thread starter Thread starter Guillaume Dargaud
  • Start date Start date
Guillaume Dargaud said:
Since today I've been getting a wide bright line on all channels
(including IR) on my Super Coolscan 4000ED.

Here's an image: http://www.gdargaud.net/BugFest/ScannerLine.jpg


Anybody can give me a quick diagnose / solution ? It's too wide to be a
single hot pixel.
Click to expand...

Difficult, on that sample image, to see just how wide it actually is and
therefore decide if it is a single hot pixel but, taking your word for
it that it is too wide, the most likely explanation would be dirt/dust
actually on the CCD window. That can be a real pain to get access to in
that scanner, so unless you are comfortable with optical components and
clean environments then it is time for a Nikon service. One alternative
might be to leave it off for a day or two, to let any static charge
dissipate and then whack it (seriously!) firmly on the side to dislodge
any dust. Not hard enough to damage it, of course, but enough to induce
some sharp motion through the scanner. With the scanner in its normal
position, the sensor sits vertical, so dust should just fall off -
unlike the optics that it fall on! :-(
 
Difficult, on that sample image, to see just how wide it actually is and
Here's a full 4000dpi extract:
http://www.gdargaud.net/BugFest/ScannerLine2.jpg
The band is about 10~15 pixels large. And I'm right in the process of
scanning 150 boxes of slides... If it's just dust I'll try to take it apart
and clean it (I usually repair my own photo lenses). It's been in disuse for
15 months and then it got flooded. I'm surprised it actually still works !
 
Guillaume said:
Here's a full 4000dpi extract:
http://www.gdargaud.net/BugFest/ScannerLine2.jpg
The band is about 10~15 pixels large. And I'm right in the process of
scanning 150 boxes of slides... If it's just dust I'll try to take it
apart and clean it (I usually repair my own photo lenses). It's been in
disuse for 15 months and then it got flooded. I'm surprised it actually
still works !
Click to expand...

With some Epsons you can put the scanner at its side (say at
80 degrees not 90, the skid of the traction unit gets in the
air then) and let it do a scan. Dirt then could fall sideways
from the mirrors, sensors, optics. It seems to help sometimes.
Do not know whether the Nikons allow that.

Ernst

--

--
Ernst Dinkla


www.pigment-print.com
( unvollendet )
 
With some Epsons you can put the scanner at its side (say at
80 degrees not 90, the skid of the traction unit gets in the
air then) and let it do a scan. Dirt then could fall sideways
from the mirrors, sensors, optics. It seems to help sometimes.
Do not know whether the Nikons allow that.
Click to expand...


I put the scanner 90deg on its side and it solved the problem !
Thanks a lot for such a simple fix !
 
The band is about 10~15 pixels large. And I'm right in the process of
scanning 150 boxes of slides... If it's just dust I'll try to take it
apart and clean it (I usually repair my own photo lenses). It's been in
disuse for 15 months and then it got flooded. I'm surprised it actually
still works !
Click to expand...

A minor omission. Flooded!? Do you mean as in biblical? Astounded might
be a better word. :-)

Dane
 
A minor omission. Flooded!? Do you mean as in biblical? Astounded might
be a better word. :-)
Click to expand...

The laptop took the water dripping from the ceiling dead on and is
subsequently quite dead, but the scanner was under the desk and seems
unharmed, even after taking a few weeks of high humidity that molded the
walls, picture frames and wallpapers.
--
Guillaume Dargaud
http://www.gdargaud.net/
"No printing is permitted on this book.
This book cannot be given to someone else.
This book cannot be read aloud." — License terms for beta version of
Adobe ebooks.
 
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