Monitor Degaussing Problems

Carp1812

Member
Jul 16, 2003
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I use an aging ViewSonic G810 for CAD purposes at work. The monitor has a little bit of burn-in because the previous user was a moron and left it on all the time. My main issue is this: the monitor gets somewhat fuzzy and requires a degaussing every hour or so. The monitor sits near a fluorescent light on my desk. Can this cause interference that would cause the magnetic field to build up? Could a poor quality power strip have anything to do with it? Are there other factors I may be overlooking? Is the monitor just too old? Thanks in advance.
CARP ><>
 

Regs

Lifer
Aug 9, 2002
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If the "rainbow" of colors do not move or are centralized around one point on the screen, then there is a part in a monitor that has become permanently magnetized causing distortion of the colors. I would think the G810 would have it's own line of defenses against magnetization.


If the rainbow of colors disappear when you physically move the monitor, then there is interference.

 

LED

Diamond Member
Oct 12, 1999
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Originally posted by: Regs
If the "rainbow" of colors do not move or are centralized around one point on the screen, then there is a part in a monitor that has become permanently magnetized causing distortion of the colors. I would think the G810 would have it's own line of defenses against magnetization.


If the rainbow of colors disappear when you physically move the monitor, then there is interference.

LOL...and I wonder who Carp1812 would considered the Moron...The previous owner who had a right to do what he wanted with his Monitor or the Poster if what Regs posted fixes the problem by moving the Monitor ;)
 

Carp1812

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Jul 16, 2003
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Originally posted by: Regs
If the "rainbow" of colors do not move or are centralized around one point on the screen, then there is a part in a monitor that has become permanently magnetized causing distortion of the colors. I would think the G810 would have it's own line of defenses against magnetization.


If the rainbow of colors disappear when you physically move the monitor, then there is interference.

Let me be more specific. I have tried moving the monitor around (away from the fluorescent light) before I ever thought about posting here. It didn't fix the problem. My original question, more accurately stated, is - could the extended proximity of the monitor to the fluorescent light in the past have created a now-permanent problem? The rainbow is not localized to a single area on the screen and it doesn't get any better when moved.

I haven't tried swapping out the power strip yet as there aren't any extras at work. I'm willing to take my good surge protector in to try it if it will be worth my time. If it won't do any good, I'd rather not shut my systems down to try this.

Originally posted by: LED

LOL...and I wonder who Carp1812 would considered the Moron...The previous owner who had a right to do what he wanted with his Monitor or the Poster if what Regs posted fixes the problem by moving the Monitor

Thanks for the vote of confidence ;) That's what I get for not being more specific....

CARP ><>
 

VirtualLarry

No Lifer
Aug 25, 2001
56,587
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Originally posted by: Carp1812
Let me be more specific. I have tried moving the monitor around (away from the fluorescent light) before I ever thought about posting here. It didn't fix the problem. My original question, more accurately stated, is - could the extended proximity of the monitor to the fluorescent light in the past have created a now-permanent problem? The rainbow is not localized to a single area on the screen and it doesn't get any better when moved.
I've heard of, in rare cases, that the shadow-mask itself, can become magnetized over long periods of time. I'm not quite sure if that's what is going on here, or more likely, something in the focus/control circuitry is "going", and you're having focus/convergance problems.

Is that a shadow-mask or AG monitor, and is it three-beam or a single-gun design?
 

Carp1812

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Jul 16, 2003
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Originally posted by: VirtualLarry
I've heard of, in rare cases, that the shadow-mask itself, can become magnetized over long periods of time. I'm not quite sure if that's what is going on here, or more likely, something in the focus/control circuitry is "going", and you're having focus/convergance problems.

Is that a shadow-mask or AG monitor, and is it three-beam or a single-gun design?

I don't know. I'm not that well-versed in displays. Anyone smarter than me that can shed some light?
 

Carp1812

Member
Jul 16, 2003
184
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Originally posted by: VirtualLarry
I've heard of, in rare cases, that the shadow-mask itself, can become magnetized over long periods of time. I'm not quite sure if that's what is going on here, or more likely, something in the focus/control circuitry is "going", and you're having focus/convergance problems.

Is that a shadow-mask or AG monitor, and is it three-beam or a single-gun design?

Here's a link to Viewsonic's description of the monitor if that will answer these questions.