Are monitors really that sensitive to magnetic fields? Is this normal?

F

fluppe85

New member
I've bought an used TV monitor but I keep getting these distortions of color shifting, mostly in the corners. Some places that need to be red are green, green are blue etc. These spots comes and go. One day is better than the other.

Is this due to the monitor or to my setup? Could it be of the transportation? I have a 30d warranty, so I could send hem back, but I need to know if the monitor is the problem. I have placed my monitor everywhere on my desk and I thought I finally had found the right place but now, a couple of days later, it starts again.
I've attached a picture of one of the previous days. For the moment, it's more in the lower right corner the distrotion comes.
http://picasaweb.google.be/lh/photo/z0ILJsAl_iPrLrElY2tgdg?feat=directlink
http://picasaweb.google.be/lh/photo/L6IgDt1i9JP54c8tS9T3kA?feat=directlink

Would this occur again if I would return this one and buy a new monitor (e.g. JVC TM-H150CG)
 
No speakers are in the surroundings. The closest one, a small computer speaker, is 5.5 feet away from the monitor. A bigger one is > 7 feet away. The only "electronics" nearby are a laptop and a portable telephone.
 
And you're quite sure you're not putting anything that may have a magnet in it within a foot or so of the monitor? Nothing much ever gets placed on top, when you're not there, perhaps?
 
Telephones have speakers, speakers have magnets, so it could be that. Same with the laptop.
Does the monitor have a degauss feature?
 
ProfessorU said:
Telephones have speakers, speakers have magnets, so it could be that. Same with the laptop.
Does the monitor have a degauss feature?
Click to expand...

Yes it does have a Degauss (it's a Sony PVM 14L4) but that doesn't make any difference. In fact, most of the time a manual degauss just makes it worse.

I don't think it could be due to the laptop, cause I have had already a nice picture, using the laptop nearby. But it really has it's ups and downs. One day it gets better and even perfect. The other day it's bad again.
 
The previous owner probably had some sort of speaker sitting on top of the monitor for a long time. As the professor mentioned the degauss feature would do the trick. If you don't have that you could try a TV repair shop (do they still have those?) they could degauss it for you.

... lol synchro post.

Sounds like a real issue with teh guns then.
 
I just walked around my house and this are my findings:

The distortion comes up everywhere: in rooms without speakers as well as in rooms with speakers, far/close (within 3 feet) to speakers, on the floor, on the table,... but there is always one direction where the picture comes clean. For how long? I can't say that by now.

What I also find weird, is that so many people are using those monitors and just very little information can be found about this particular problem. Does everybody has the perfect setup at home? I see many people who have monitor speakers within 5 feet of there editing suite and monitor...

Is this a particular problem of professional monitors? Are they a lot more sensitive than consumer CRT's? I've never had any problems with the picture of my old consumer TV.

If it is due to my setup, can this be fixed? And how? Can I ground it and where should I ground it then? Can I e.g. make a case where I can place the monitor in? Others?
 
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