Over time, all digital equipment is worn. This may be due to technology obsolescence or mechanical damage. Many people wonder what to do if the TV shows the colored spots. But to solve this problem, you must first understand the reason for its occurrence.
There are several causes of spots on the television receiver screen LCD or plasma type.
Failure matrix production technology and assembly of the device itself may cause staining after a start time of the device.
To get the money back or replace the unit on the same should apply to sell the goods in the store within two weeks after purchase. If a defect is detected later, will have to deal with the manufacturer and order a warranty repair.
Damage
Stroke or a strong pressure on the LCD screen can also cause spots and streaks. They may even go beyond the damaged zone.
Air and moisture
Contact with wet air or fluid into the apparatus as a result of careless handling or during transportation also causes a disconnection of the display elements. These defects appear as a bright spot.
Dust
White spots often show hit the dust between the layers of the matrix. They appear in the case of bias layers or partial distortion.
Constant temperature differences increase the movement of the layers. Therefore between them gets more and more dust and debris particles or small insects crawl. In these spots become black for several months.
High temperatures
If the screen is located next to the constant heat source, such as a radiator, fireplace, kitchen stove, the delamination of the matrix and the dust from the debris accelerated.
A magnetic field
Strong direct or alternating magnetic field affects the system that controls the electronics in the obsolete CRT televisions.
Colored spots on their screens are due to:
- demagnetized beam deflection system;
- Neighborhood with electrical appliances, radiating a magnetic field, for example, with a microwave;
- damage to the appliance;
- burn coating of the picture tube.
In the first case will challenge the master, which will regulate the system. In the second technique, simply rearrange to another place. The third and fourth cases, the need to change the picture tube.
Decision
Part of the display problems can be solved on their own. On the other, it is better to contact the service center.
Service center
When running, the screen appears a bright flare - a characteristic sign of workmanship. If the warranty period has not yet expired, it is necessary to hurry to change the unit under warranty.
First, contact the manufacturer's representative, and only then, if the case is found to be a guarantee, and the repair is too expensive, you can try to remedy the defect yourself.
Get a replacement unit for the same work, only if it will not dent or other mechanical damage. The same applies to the integrity of the warranty seals.
Eliminating dust
Actions to remove large particles of dust and other contaminants from the matrix LCD or plasma following:
- Take a dry cloth.
- Putting it on the hand, easy to tap on the screen.
- If the particles are spilled down - stains should disappear.
do not wipe the display as if the matrix layers are separated, it will only worsen the situation. In addition, the output may remain difficult to divorce.
Dust can try to remove the layers of air blowing. Do it standing in the room where you just performed a wet cleaning, and the dust in the air is not left.
To do this, you first need to be very careful slightly dissolve in the side of the screen layers. And after that, a rubber bulb or tipped hose from the portable compressor to purge the space between the layers by blowing out the dust from the waste.
replacement matrix
If given the conclusion of the full output of the matrix of the system before replacing the need to weigh the pros and cons of the service center:
- the cost of such repairs can be up to half the cost of a new TV, or even more;
- Delivery of the new matrix can take up to three months;
- after replacing the old renovated TV will cost a little less than a new and serviceable.
In the case where there is no other option and the matrix yet decided to change, you can do it yourself. For this:
- The serial number is found the television and make a new part. This number can tell, and the service center.
- When an order is received, please contact him with extreme caution.
- Disassemble the receiver box, lay the monitor on a flat, soft surface. Suitable cardboard or heavy paper.
- After loosen the screws, disconnect the ribbon cable from the matrix.
- Turn the TV off and disconnect the front frame of the screen, which is attached snaps.
- Remove the old matrix and replace it with a new one.
- Connect the cable and turn on the TV to make sure the image quality.
- Assemble the unit in reverse order.
Work in rubber or vinyl gloves to avoid leaving fingerprints on the screen. Before replacing this part also need to clean the air of dust ventilation with wet cleaning.
washing
Stains can be removed from the liquid by rinsing all of the layers of the screen. To do this, use boiled water or alcohol medical purified room temperature. Rinsing with water from the tap only worsen the situation, adding to the new old pollution. Be sure to unplug the TV before.
After washing, the surface should dry cold air dryer or a lint-free cloth. Here, too, the room should be free of dust, and the work must be done wearing rubber gloves.
Replacing the LEDs
If the corners of the display appear dark oval spots - this indicates a problem with LEDs that light up the screen. Unit of LEDs is relatively inexpensive and changes without complete disassembly of the TV. And during the warranty period it will replace free of charge.
Suddenly appearing spot on the TV screen may occur for various reasons, such as spills, dust, mechanical damage.
When the equipment is still under warranty - immediately contact the service center. After this period, in some cases, the spots can be removed by hand. The main thing - do not neglect the rules of self-repair, so as not to exacerbate the problem.
