Re: temp loss of monitor calibration

[Loren Sauer <sauer@plains.NoDak.edu>]

>Was showing some photographs I in Photoshop on my monitor screen. In
>order for the group to see them I swiveled the 21" Nokia monitor about
>180 degrees. Halfway through the turn colors started changing on the
>screen. By the time the turn was completed, all greens had changed to
>violet and everything generally looked washed out -- pale blue/greens. I
>turned the monitor back and colors returned to normal. Thinking I was
>picking up some kind of magnetic field I removed everything from the
>table shared by the monitor: speakers, antenna for an fm receiver that
>hooks into the computer, Jaz drive. The problem reocurred when I turned
>it again.
>
>Two questions: any idea what is causing this color shift, such as
>picking up some kind of magnetic field, and would it cause any permanent
>damage to the tube if I kept it in the "skewed" position?  I checked for
>loose connections everywhere and a bad cable. None was found.


Magnetic field.  Locally, or...

I had a Sony XBR TV and the directions cautioned against rotating the
monitor while it was on.  The earth's magnetic field will affect the color
guns in large monitors.  Fortunately, auto degaussing circuits in monitors
will restore everything when they are turned back on.

Loren Sauer


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