Can drywall affect a CRT monitor?

[JonnyStarks]

Ok, so I have a Samsung 17" CRT monitor on my desk that is backed right up against my wall. To the right of the desk is the head of my bed and I like to watch DVD's and sometimes just IM on my bed so I turn the monitor to face it so that the left side of it is right up against the wall.

It doesn't seem to make a big difference like that but when I turn it back to where it is normally the colours seem to be faded along the side that was along the wall. (ie the start bar by the clock which is normally windows blue turns almost purple)

This usually only lasts for a little while and sometimes I even see it while its still turned.

Is this causing any lasting damage to the monitor? Should I stop doing this?

Thanks in advance.

Edit: Actually just turned it on and off, that seemed to fix it, but I'm still curious.

 

[TStep]

Not exactly sure of your setup, but maybe the wiring inside the wall affecting your monitor?

 

[fuzzynavel]

what is on the other side of the wall????

TStep sounds like he is on the right lines....electromagnetic interference of some kind seems possible......try putting an unshielded speaker next to the monitor and see if you get the same effect!!!

 

[dullard]

It is very common that the wiring in the house (or powerlines nearby the house) will create similar symptoms. CRTs have a lead shield around them to prevent most of this problem, but obviously, there cannot be any shield on the screen side. Thus the angle of the monitor to those electric/magnetic fields matters. Thus turning your CRT makes things better/worse.

 

[JonnyStarks]

Originally posted by: dullard
It is very common that the wiring in the house (or powerlines nearby the house) will create similar symptoms. CRTs have a lead shield around them to prevent most of this problem, but obviously, there cannot be any shield on the screen side. Thus the angle of the monitor to those electric/magnetic fields matters. Thus turning your CRT makes things better/worse.

That actually fits pretty well, as I said it doesn't happen every time so it must only happen when its at a certain angle...

But is there any real problem with this? Should I be worried about lasting damage?

 

[dullard]

Originally posted by: JonnyStarks
But is there any real problem with this? Should I be worried about lasting damage?

I've seen a few TVs that were permanently discolored by very strong electromagnetic fields. But the majority of times, when the field is removed, the TV goes back to normal. CRTs are basically the same technology, so I assume CRTs act the same. I just don't really know. So, my answer is there is the potential for permanent damage but I guess the chance is small. That probably doesn't help. Maybe someone else is more knowledgeable here.

I distinctly recall several old threads on this very subject (maybe one thread a year or so). I forget if there were any conclusions.

 

[biostud]

Degauss the monitor to make it go away