How to demagnetize the TV screen at home: the causes of magnetization of the screen.

Despite the presence of a huge selection of modern LSD and plasma screens, there are people who still use older TV sets and monitors with cathode-ray tube. And very often they are faced with various problems. One of them - is the appearance on the screen of different colored and dark spots. Such a problem is caused by magnetization of the screen. And many are beginning to think that the TV or monitor is completely worn out. However, this is quite easy to solve the problem. Only need to demagnetize the shadow mask CRT.

Causes of the screen magnetization

The shadow mask is a constructive element a cathode ray tube.

ATTENTION! Mask is responsible for the projection of the red, blue and green colors on electronic lyuminofon CRT.

To avoid magnetization CRT, televisions and monitors are equipped with a PTC thermistor and a demagnetization coil. They work only if the appliance is switched off. If there magnetization picture tube, it does not always mean that PTC or reel out of order.

The reasons for the occurrence of this problem can be several - both external and internal.

These include:

1. The failure of one or several elements mounted degaussing system. This reason is the most frequent.
2. Frequent switching on and off the TV with a minimum time interval.
3. Located a short distance electronic devices that create an electromagnetic field. It may be cell phones, speaker, radios and other appliances.

Established degaussing loop failure comes very rarely. PTC is usually the cause of a fault. Failure of this element is very often arises due to incorrect operation of the equipment. TV off not via a dedicated button on the remote, and the network Unplugging forks causes discontinuity momentary high current. Because of this shock PTC thermistors fail. It happens the opposite situation, where the devices are generally not disconnected from the network 220, which leads to their gradual magnetization and the appearance of color distortion on a CRT.

If this occurs, do not just apply to the studio, as you can cope with it yourself at home.

How to demagnetize the TV at home

There are two ways to deal with magnetized CRT:

1. If the distortion region is small, it can help manage the regular system. The instrument must be switched off about 30. If the distortion became smaller, the procedure is necessary to spend some time, until they disappear completely.
2. The second method - use special choke. Now it is quite difficult to find even in the shops. However, it is easy to make it your own.

How to make inductor demagnetization CRT? To do this, you need the following:

• mandrel;
• PEL cord - 2;
• insulating tape;
• any button;
• cord for 220V network

The mandrel is wound cord to do about 850 rpm. After which it must be insulated with tape. On the resulting structure is fixed off-off button and the power cord supplied.

demagnetization steps:

1. Heat the TV picture tube for a short time.
2. We serve meals on the device for demagnetization. From a distance of not less than two meters from the screen begin to make broad rotational movement.
3. Gradually come to the kinescope, gradually making the rotation radius is smaller.
4. After the reactor will be in the vicinity of the picture tube, the distortion increase. You do not need to be frightened.
5. Without stopping a circular motion, also need to slowly move back in and turn the unit off.
6. If the distortion is not immediately lost, the procedure should be repeated.

Do not hold the throttle in switched state for a long time. This leads to its heating. The whole procedure should be carried out quickly enough. It should occupy about 30 seconds.

IMPORTANT! It is strictly forbidden to use a magnet DC action!

It happens that both of these options do not help. This means that PTC came down to be replaced by the same.

To avoid re-magnetization, it should be remembered that the TV must be properly shut down and give it a rest for a while.