Degauss a Monitor?

[mendhak]

There's a purple patch in the bottom left corner of my screen (I believe it's because the monitor's old). To remove it, I need that Degauss button, as some of you may be aware of.

I don't have one. Any other method to get rid of that purple patch?

[nemaroller]

Try waving a magnet over the area when the monitor is off... also be sure no other magnets are next to that area of the monitor... (big speakers or anything like that)...

[parksie]

Turn the monitor off (having moved all the magnetic sources away, like nemaroller said) for about an hour.

Then turn it back on and it should auto-degauss.

[JPicasso]

Actually, a magnet may make it worse.

The problem is that some of the Screen "stuff" has become magnetized.

What you need is alternating current.
Try moving a running hair dryer near the screen (the back part where the fan is) with the monitor off. (or on I suppose).


This is a neat trick the TV repair man did when I mucked up my parents TV back in the day.

[EDIT]

Depending on how old the monitor is, you may have to get a job,
earn some money, and purchase a new monitor with your new money

[/EDIT]

[msimmons]

Can't you just pick it up and shake it like an Etch-a-sketch?

[mendhak]

Thanks, I'll try that.

Oh and the screen "stuff" is called phosphor, I believe.

[JPicasso]

AAHHH!

Medhak said the word of the day!!!


AAAAAAHHHH!

AAAAAAHHHH!

AAAAAAHHHH!

[poopyman67]

I dont think its the alternating current from the hair dryer that does the trick. Its prbably the magnets in the fan that do the trick, just so you know.

[JPicasso]

No.

It is the alternating current that will "Fix" the monitor.

A magnet will cause the phosphors to become aligned and therefore
not respond correctly to the signal emitted at the back of the CRT.
An alternating current will disalign the phosphors back into their previous,
"normal" patterns.



Here is a link that explains the exact phenomenon.
I searched for Degaussing on google and this was the first link.
page down to What is degaussing - The Process
which explains what degaussing is, and what good the alternating current does.

Link Here


This example is on electronic media, but the principle is the same.


However, I"m inclined to belive that mendhaks problem is a bad moanitor.
Modern monitors are build with wires placed around the screen,
which is some of the reason a 19" monitor needs a 21" case.
These wire get an alternating current on start up, and when you press
that little button. This will cause the process of degaussing.

Just so you know

[msimmons]

When I was an accountant one of the things I thought was funny was going to one of the gals and telling them to push the degauss button (they would not know what it did beforehand).
Michael

[poopyman67]

I'm sorry JP, I stand corrected.

[JPicasso]

Hehe,

You have to understand,

I"m an electrical engineer. At least that's what the paper says.

And although I use nothing whatsoever that I learned in college
except the part about acceptable quantity of pickled eggs to be
consumed in one evening...

I have to make those years of hell of putting up with electrical engineering
professors pay off.