Lompat ke konten Lompat ke sidebar Lompat ke footer

7 Causes of Abnormal TV Color and How to Correct it

Having an old TV is certainly different from a new TV. TVs that are still new usually display brighter, more accurate colors and can be adjusted according to the features available on the TV according to the brand. As long as you do the tips on choosing a TV when buying, you can get the appropriate TV results. So try to see the results of the colors and images on the TV that are on display at the store.

But of course when the TV is old, damage can occur. There are many types of damage to a TV but the most common is loss of displayed color. So that sometimes television has a predominance of special colors such as green, blue, black and even red. If it's like this it must be fixed immediately. But before that, take a look at the causes of abnormal TV color and how to fix them.

Causes of Abnormal TV Color and How to Correct it

1. If Any Color Does Not Appear

There is basically some color damage to the TV. Generally, the main colors that appear on the TV are red, blue and green. If one of the colors does not appear, this damage can attack the tv matrix series. You should also check if any of the color sequences on the RGB are loose, damaged or missing. If this damage occurs, adjust the RGB settings to remove the dominant color and bring up colors that did not appear before. This reset process can make TV colors more stable and dynamic.

2. Solder on the Color System is Damaged or Broken

If it turns out that the solder on the component legs that processes the color on the TV is damaged, either broken or cracked, it can remove one of the TV colors. This damage usually occurs due to the quality of the soldering iron from the tv manufacturer and also the continuous heat factor. The use of low-quality tin also causes the solder to break or break easily.

Then if it is affected by heat, it can happen because the RGB located on the FCB is actually attached to the cathode of the tube, where this area is indeed very hot. Then because it is exposed to continuous heat, the solder on the component legs can be damaged. If this damage occurs then immediately re-solder it with a better material. Of course, the method is different according to the type of TV, so first look at the differences between LCD and LED TVs.

3. Faulty Color Transistors

Damage that often causes the color of the TV not like new can also occur in the transistor that controls the color. This transistor attaches to the FCB behind the TV tube. If there is damage to this section then there are several signs such as one or two TV colors missing.

The way out of this problem is to replace the damaged transistor. The trick must know the levels of microfarad and ampere used. Then also have to know the color output of the transistor, namely red, green and blue. But checking all of the transistors can also cause more damage. So it is better to immediately confirm which transistor is damaged.

Sometimes this damage also occurs due to weak transistors. The sign is that one of the tv colors is missing and sometimes it can appear again. If it is replaced then it will not change so check the solder status of the transistor. Therefore, in order not to be damaged, do how to care for the led tv and LCD properly.

4. Resistor Damage Due to Short

The TV is also equipped with a limiting resistor which functions to regulate the incoming current and works for the TV system. When the damage occurs, the TV color becomes unstable and sometimes only one color is the most dominant. This damage can cause impacts for green, blue and red colors. The most common failures include extended resistors, exposed to higher voltages and broken resistors. If so, immediately replace the limiting resistor according to the specifications. This step is one of the most common ways to repair a TV.

5. Damage to the socket tube

Another cause is damage to the tube socket which is easily corroded and damaged. This condition is very common for televisions that are old and too hot. This damage can even occur to a TV that is not turned on. This socket is designed to keep the TV color stable so that when it is damaged, the color will become unclear, blurry, and sometimes the main color such as red, blue or green disappears on its own. An important step in dealing with this damage is to replace the socket.

6. Voltage Drop Problems

When there is a drop in the voltage at the cathode it can cause damage to the color reflection. This will cause the color to be darker or the color that is actually covered in a light shadow of black. This damage is actually not only caused by the voltage drop but also damage to the wires connecting the diode and cathode solder.

7. Damage to the Croma IC

The damage that occurs to the Croma IC can cause the most frequent color damage on the tv. This damage must be checked by looking at the croma IC output from the very front to the back. But sometimes this damage is also very common, causing damage to other components. If so, checks on the other components must also be carried out.

General Inspection for TV Color Blemishes

As explained above, color damage is a general damage that can attack one or more components. So that to find out the damage that has occurred, do general examinations such as:

  • Check the CRT socket for mold, rust or breakage.
  • Check and repair the solder on the vertical IC.
  • Check and repair solder on the Croma IC.
  • Re-solder on the RGB attached to the RCT.
  • Check the voltage and voltage for the Croma IC must be normal.

Those are all causes of abnormal TV color and how to fix it. Because sometimes the damage can attack many components, it's best if you can't repair it yourself, you can take it to a service center so that the damage doesn't get worse.

Posting Komentar untuk "7 Causes of Abnormal TV Color and How to Correct it"