Why should a computer monitor be demagnetized?

Display degaussing.

Many displays have a built-in degaussing function, which can be performed by selecting the degaussing option from the control menu. When degaussing is performed, the display screen will shake violently, accompanied by a loud current sound, and after about a few seconds, the shaking and current sound will stop at the same time, and the degaussing will be completed. The degaussing function of the display has a good effect on the relatively weak magnetization, and it is also very convenient to use, but it has little effect on the deep magnetization caused by strong magnetic field interference.

For deep magnetization, it is recommended to use specialized degaussing tools, such as degaussing rods and degaussing coils, etc. The degaussing rod is a short rod-shaped tool produced for the magnetization problem of displays, and is generally sold in the electronic market. When using, hold the degaussing rod in front of the monitor screen, and take the center point of the screen as the center of the circle to do a circular motion with a gradually expanding radius until the degaussing is completed.

The advantage of the degaussing rod is that it is easy to purchase and use, and the average consumer can operate it correctly. When using the degaussing coil for degaussing, the hand-held coil starts from a certain edge of the screen and slowly moves in a circular motion towards the center of the screen, and then turns over and rotates to the outer ring after reaching the center of the screen, and repeats many times until the end of the operation, place the coil in the center of the screen, and make it at an angle of 90° to the surface of the screen, keep it vertical and slowly retreat to 1 meter away from the display, and then turn off the power of the coil. This can be repeated several times until the display is completely eliminated due to magnetization.

The advantage of the degaussing coil is that the effect is more obvious, and the disadvantage is that the operation process is not as simple as the degaussing rod.

The above said that I will tell you the principle, because the imaging in the picture tube is a high-voltage electron gun bombardment of the RGB three-color phoscent powder on the picture tube to image, (the phoscent powder is a small particle, it is arranged in order) Because the electronic time to the phosphant powder to disrupt them,So there is a "spot screen" (the spot screen is the screen will be red and green), degaussing is through the "degaussing coil" to generate an S magnetic field to correct the phoscent powder, which is why our speakers do not and the display, The reason why the TV is placed too closely,Because the speaker of the speaker has a magnet that will also affect the picture tube,Now you know,It's a bit professional, if you want to know more deeply, ask me。

If the display is magnetized, there will be color spots when displaying, my friend once because the speaker was put too close, the display appeared color spots, I thought it was a problem with the display, but it was actually magnetized, and it would be good to degauss, so if there was no problem, I don't think it was necessary to use it.

Because, the magnetic field will affect the display effect!

Display degaussing method:

1. Large-screen color TV degaussing coil.

Remove the monitor from the main unit, bring the screen close to the color TV phosphor screen, turn on the color TV and turn it off, wait for a few minutes, let the color TV degaussing resistor cool, and then repeat. Connect the monitor to your computer and you'll see that the stains on the CRT are gone.

2. The current passes through the core resistance to generate the degaussing of the magnetic field.

First of all, the colloidal wire (or plastic insulated wire) is wound into multiple coils, connected in series on heavy-duty electrical appliances (such as electric furnaces, heaters, etc.), connected to the power supply, fixed the coil, and slowly move from one end to the center close to the screen, and finally ** circle and phosphor screen, keep it vertical, slowly retreat to 1 meter away from the display, and turn off the power.

Restart the machine to see the degaussing effect. If the effect is not good, you can repeat it 2 or 3 times until the pigmentation caused by magnetization on the computer screen is completely eliminated.

3. For the old display without degaussing function, it can be automatically demagnetized every time it is turned on.

Turn off the monitor before turning it off. The next time you turn on the machine normally, you will hear the "pop" sound of the display screen to achieve the effect of demagnetization when you turn it on.

4. The computer has a degaussing function.

The function of adjusting the brightness and size of the display is demagnetization.

5. Self-made degaussing coil.

Turn off the monitor, unplug the power plug of the monitor, plug in the 220 volt AC power supply with a homemade degausser, close to the opening in the upper left corner of the monitor, turn on the degausser, slide clockwise to the screen**, slowly move the degausser, about 1 5 meters away from the monitor, disconnect the degausser, and the degaussing is completed.

How to degauss the computer screen:

1. Use the degaussing coil of the large-screen color TV to degauss.

Remove the monitor from the main unit, make its screen and the color TV phosphor screen close together, turn on the color TV and then turn it off, wait a few minutes for the color TV degaussing resistor to cool down and repeat again. Connect the monitor to the computer and turn it on, and you can see that the color spot in the CRT has disappeared.

2. Degaussing the magnetic field generated by the current through a resistor with a magnetic core.

First, the rubber wire (or plastic insulated wire) is wound into a multi-strand coil and connected in series on a large-load electrical appliance (such as an electric stove, heater, etc.), connected to the power supply, holds the coil, and slowly moves in a circular motion from one end to the center from one end close to the screen, and finally puts the coil at right angles to the phosphor screen, keeps the vertical direction and slowly retreats to 1m away from the display, and turns off the power.

Reboot the computer to see the degaussing effect, if the effect is not good, you can repeat 2 or 3 times until the color stain caused by magnetization of the computer screen is completely eliminated.

4. For the old display that does not have the degaussing function, it can be automatically demagnetized every time it is turned on.

After powering off, turn off the monitor and then turn it off. The next time you turn on the machine normally, you will hear the display make a "pop" sound, so as to achieve the effect of demagnetization at startup.

5. There is a degaussing function on the computer function.

There is degaussing on the function of adjusting the brightness and size of the display.

6. Self-made degaussing coil degaussing.

Turn off the monitor, unplug the power plug of the monitor, plug in the 220V AC power supply with a homemade degausser, close the open end to the upper left corner of the monitor, turn on the power of the demagnetizer, and slide on the screen in a clockwise direction until the center of the screen, slowly move the degausserizer away from the monitor about a meter, disconnect the degausser, and the degaussing is completed.