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Monitor what does degauss your screen mean? There are no electromagnetic devices near the monitor

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You also have an LCD which does not suffer the problem requiring it to be degaused. That is a CRT thing.

Posted on Apr 15, 2008


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My question on degaussing a Sharp lc 40c37u was answered yesterday by Larry who said I need to use a degaussing coil. I'vd read you only use those on CRT's and my TV is an LCD screen. Who's right?

Degaussing is the process of removing unwanted residual magnetism from the iron core of wire coils. The process maintains or improves the efficiency of such coils and on later crt tv and monitors the process was often done automatically on startup. It is a brief but noisy process. Degaussing was (is) also used on magnetic record/replay heads and suchlike.

CRT monitors and tv use strong electromagnets to make the spot scan into a picture. I don't know how scanning is carried out on a flat screen tv but Wikipedia remarks the flat screen display has displaced the magnetic scan systems...

Nov 12, 2017 | Sharp Televison & Video

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Monitor colour is ok in the middle circle and on right side it seems to loose the red colour and on the left it seems the green colour is missing.

The CRT has likely become magnetized. On the monitor's main menu there is a "degauss" option. It is the option depicting a horseshoe magnet. Select that option to degauss the CRT, and the color distortion should clear up. If it improves but does not clear up entirely, degauss the CRT again. Is the monitor situated near a magnet (such as a speaker, a subwoofer, or some other source of magnetic field)? If so, either move the monitor away from the magnetic field source or move the magnetic field source away from the monitor, then degauss the CRT by selecting that option from the main menu on the monitor. Was the monitor dropped? If so, a series of electromagnets at the back of the CRT (called the "blue lateral") may have come loose. This is somewhat challenging to align and is best handled by a technician.

Jul 02, 2011 | Daewoo 719BF 17 in.CRT Conventional...

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My brother placed a magnet on my moniter screen since then the screen shows different colours?

Have you displaced the magnet now? if not do it. Even after displacing the magnet retains the problem, you need to again keep the magnet as it was placed last time, this will discharge the electromagnetic process. Good luck

May 20, 2010 | LG Studioworks 700S 17" CRT Monitor

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Degauge monitor

If your using a CRT " older bulky monitor " your looking for a horseshoe magnet symbol, If your using an LCD or flat screen you do not degauss the screen, CRTs are driven by electromagnets steering a beam onto the front. The newer screens do not use an electromagnetic device and they do not have a use for degauss. You used the word degauge did you mean degauss? If your screen is a flat panel LCD/plasma and has color warping you may need to seek servicing.

Apr 26, 2010 | ASUS 22" LS221H Wide LCD Monitor

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Envision 19" Widescreen Flat-Panel LCD Monitor It just started I have lines that flicker across the screen.How do I stop that it is driving me crazy.

Is there any speaker sets near the monitor or electromagnetic devices near the monitor?

Generally the flicker is caused by some external devices.

Mar 14, 2010 | Envision 19" Widescreen Flat Panel LCD...

1 Answer

Dell XPS M1210 laptop was set next to a speaker and now the bottom half of the screen is grey

It's due to the magnetic field interferences from the speaker. At the first place, you shouldn't keep it near the speakers.

Always keep speakers far away from the Monitor.Now turn off the monitor and turn it on again,hope it solve the problem. You may even need to restart the system.

Moving magnetic fields (such as from an electric motor) can cause flickering when near a CRT screen. A static magnetic field, such as from your computer's speakers, can cause color shifts or incorrect colors in the area near the magnet. This color shift is caused by parts of the screen becoming magnetized. Occasionally the color shift will remain after you remove the source of magnetism. To help reduce or eliminate the color shift, you can use the degaussing option on most monitors. Most newer monitors automatically degauss when you turn them on, while older monitors might require you do to it manually. Most monitors have a button or menu option that enables you to degauss it manually. Degaussing a monitor will de-magnetize the inside of the monitor, removing the color shift. Unfortunately, if the monitor is exposed to the source of magnetism for too long, degaussing will not be able to clear it up, requiring you to repair or replace the monitor.

Feb 08, 2010 | Dell InspironTM XPS M1210 Notebook

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Dell inspiron 1525 screen is dull

Try to "DEGAUSS" -Degaussing a computer monitor clears electromagnetic buildup from the screen. How to do it this is the link


Feb 03, 2010 | Dell Computers & Internet

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I have purple heads on my tv

Maybe you have some kind of magnetic material on top of the TV. TV screens respond to magnetic field. If the problem is not caused by a magnetic material being near it, then it is the degauss (meaning demagnetize) circuit inside. You can also degauss a screen using electromagnet. If placed around the screen of the TV in the right way. I have never used a magnet to demagnetize a TV screen, but maybe orienting the magnet at just the proper angle may also demagnetize it by cancelling the magnetized area. You can also make a TV screen demagnetizer using a loop maybe made out of plastic tube and winding enamelled wire onto it. The loop has to be about the size of your TV screen. Make sure you put tape over the whole thing, and connect a plug so you can plug it to the ac outlet. Once plugged in, the ac current will produce magnetic field to cancell out the magnetized area, when you wave the loop around your screen. I once made this as one of my tools when I worked at a TV repairshop.

Jun 27, 2009 | Televison & Video

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Samsum samtron crt 56 v monitor ,got a green shade on picture,but looks good at times

That has been damaged by some magnetic device.

Solution: You need to degauze it. (Refer to manual for specific degauze instructions)

Jan 03, 2009 | SAMTRON 55V 15" CRT Monitor

1 Answer

Monitor problem

if u put any electro magnetic device nearly screen change its place.also degauss your screen.

Apr 03, 2008 | Mag Innovision LT776s 17" LCD Monitor

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