The problem of the appearance of stripes on the screen often occurs with modern TVs with a liquid crystal display. As a result, they appear, is there a connection between the cause of the breakdown and the type of strips, how serious the consequences can be if the malfunction is not fixed in time – these and other issues are discussed in this article.
- Types of bands on the TV screen
- Popular goods
- Reasons for the appearance of stripes, depending on the type
- Narrow horizontal stripes on the TV screen
- Multicolored horizontal
- Black vertical and horizontal stripes on the TV screen
- Thin vertical stripes on the monitor
- vertical pink
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- Vertical white (light) stripe on the TV screen
- Vertical blue
- Vertical green bar on TV monitor
- vertical red
- yellow vertical
- Troubleshooting
- Stripping the contact of the matrix cable
- Elimination of a break in the matrix loop
- Cable replacement
Types of bands on the TV screen
The defect of the television screen in the form of stripes that appear negatively affects not only the image quality, but also the operation of the hardware modules, due to the failure of which such problems arise. As a result, their service life is significantly reduced.
The most common types of stripes on the TV screen:
- thin horizontal;
- thin vertical;
- multi-colored horizontal;
- pink vertical;
- white vertical;
- blue vertical;
- green vertical;
- red vertical;
- black vertical and horizontal;
- yellow vertical;
- white horizontal.
This list does not represent all the variety of such defects on the screen. Stripes on the TV screen can be single and multiple, short and long, but are mainly divided into vertical, horizontal and multi-colored.
The problem may periodically appear and disappear, but in no case should such a defect be left unattended – in the end it threatens with even more serious damage.
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Reasons for the appearance of stripes, depending on the type
Even the most modern TVs cannot be completely insured against any premature failure of hardware modules. Most often this happens due to improper care, less often due to the fault of the manufacturer. Sometimes different stripes on the TV screen can be caused by one damage or, conversely, the same defects occur as a result of different reasons. To find out what are the main reasons for the appearance of one or another type of bands, we will consider them in more detail.
Narrow horizontal stripes on the TV screen
Usually the cause of their occurrence is a violation of the frame scan that occurs due to power surges in the network. As a result, this may result in chip cracks. Here is an example of such a malfunction and a method for fixing it: https://youtu.be/sviY3BZlAuY
Multicolored horizontal
When horizontal stripes of different shades appear on the TV screen, as well as streaks or ripples, it is highly likely that the contact cable has disconnected from the matrix. In this case, it should be soldered. Often the problem is caused by a broken motherboard. This usually happens when the performance of the image control unit deteriorates.
Black vertical and horizontal stripes on the TV screen
Such stripes are often located on different sides of the screen, sometimes in its center. This is one of the most problematic breakdowns, requiring serious expenses, since the cause in most cases is damage to the decoder. In this case, a complete replacement of the matrix will be required. If urgent measures are not taken, the lines will expand, the screen will stop glowing. We will have to invest even more funds to restore its performance. Many problems with the appearance of stripes on TV screens can be solved by a modern media player, for example, such as
TANIX TX6 4/64GB .
Thin vertical stripes on the monitor
The cause of the appearance of vertical stripes on the TV screen, which do not light up at all, may be a breakdown of the decoder or matrix columns. This happens, for example, as a result of a lightning strike or sudden power surges. If timely measures are not taken, the strip will expand and eventually completely cover the screen.
Recovery of the LED TV matrix (break in the matrix):
https://youtu.be/lJqbio3SYPc
vertical pink
Most often, color stripes on the screen appear as a result of damage to the monitor matrix. Breakdown can occur due to a failure of the power supply system, shock and other similar influences. The reason may be the usual wear and tear of the elements: if a vertical stripe of pink color (less often purple) appears on the monitor, the reason for this is most often a breakdown of the scaler. Sometimes a similar defect is present even in new TVs, but here the reason, as a rule, is a factory defect – in this case, the TV should immediately be returned to the store under warranty.
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Vertical white (light) stripe on the TV screen
It can be barely noticeable and flickering, or, conversely, clearly expressed. The appearance of such bands – however, as well as bands of any other shades – primarily indicates a malfunction of the matrix. You can check the correctness of this assumption as follows: press, move (without much effort) or somehow gently act on this element. If the bar disappears and reappears on the screen, the part is damaged and needs to be replaced. Another example of a breakdown with vertical white stripes, and how to solve it, see the video below: https://youtu.be/CA5J5v6PYxg?t=34
Vertical blue
Most often, such strips occur when the video card is overheated or worn out. If the warranty period has not expired, the best option is to replace the element. Another reason for the appearance of vertical blue (cyan) stripes may be a breakdown in the contact of the matrix loop. Another reason is that as a result of overheating, the solder balls of the video processor peeled off from the BGA substrate.
Vertical green bar on TV monitor
Most often, the cause of its occurrence is damage to the structure of the cable that connects the image-forming board and the LCD matrix of the TV. The width of the strip can be quite large and be several centimeters, or, on the contrary, be very narrow – one pixel. Often, it appears unexpectedly on the screen, and after sufficient warming up of the TV, it disappears, and the picture is displayed without interference. In some cases, the strip remains, but looks lighter than the main background.
vertical red
Its appearance most often lies in the downed contact of the matrix cable. Sometimes burnt parts are the cause. It can also signal a breakdown of the cable connectors or their dustiness. Such stripes can also appear due to the fact that the track on the board has peeled off or the VGA wire has been damaged.
yellow vertical
When it appears on the LCD monitor, the first thing to do is try to connect it to the network by disconnecting it from the system unit. If the strip disappears, then the problem is most likely in the video card. The capacitors may have swollen and need to be replaced. Otherwise, the problem must be sought in the display. The video below discusses several examples of TV matrix malfunctions and describes the causes of their occurrence, gives contacts for complex repairs: https://youtu.be/Jtj3ID3ZMOg?t=111
Troubleshooting
The appearance of stripes on a television screen is not yet a reason to immediately begin a global disassembly of the device. Before looking for a cause in a malfunction of circuits and boards, you must first check:
- connecting the cable that outputs the image – is the connector dirty;
- settings on the TV itself using the automatic picture settings mode.
If you keep the strips on the screen after the manipulations, you should think about a serious repair. As we found out earlier, the reasons for the appearance of various bands are mainly due to a malfunction:
- matrix loop contact;
- the matrix itself;
- elements of boards and microcircuits.
These issues can be fixed, but sometimes buying a new TV is better than refurbishing it. Some spare parts are very expensive, besides, there is no guarantee that when changing parts and circuits, the TV will work correctly.
We will analyze possible ways to eliminate these and other malfunctions.
Stripping the contact of the matrix cable
Contact problems may occur due to improper use of the device or poor assembly quality, care for it, for example, cleaning the screen. A simple inspection without the use of a magnifying glass is sometimes sufficient to determine poor contact. It is not difficult to fix the problem with oxidized contacts, especially with a small area of damage. You will need a regular blade or knife to clean up plaque. After removing the plaque, be sure to check the voltage by ringing with a multimeter. An example of home cleaning of the contacts of the LCD TV cable is shown in the video below: https://youtu.be/3hb0Iao0An8?t=101 The reason for poor contact may also be an incorrect connection of the cables. In this case, you need to disconnect all loops, and then connect them correctly.
Elimination of a break in the matrix loop
First, you should verify the accuracy of the alleged breakdown by moving or pressing the cable. If the streaks have disappeared, then the damage is set correctly. Then you need to arm yourself with a soldering microscope and find damaged wiring. The work requires endurance and jewelry precision, as well as skill and the necessary equipment. Defective areas are restored with conductive varnish. You can also heat the contacts to an acceptable temperature, but in no case should overheating be allowed, otherwise, instead of repair, additional problems can be acquired.
This procedure is complicated, often masters do not undertake it.
Cable replacement
If it is found that the cable has failed, you will have to replace it with a new one, and be sure to use the one that is suitable for this TV model.
The design feature of various brands of TVs is that each manufacturer has its own, individual one, so read the instructions before proceeding with the repair.
The cable is located in the TV case, so you have to unscrew the fasteners connecting the back. If they give in with difficulty, do not try to unscrew them clockwise: as a rule, all the bolts are unscrewed against it. It is necessary to be extremely careful when disassembling, since in most cases the cable is located on the cover itself – this will prevent damage and breakage of the elements. It is not necessary to solder the wires – the connecting elements have connectors. To remove the cable, you need to press on a special latch. A broken cable, of course, can be replaced without a workshop, it’s not difficult.
How to remove cables of various designs for their further replacement is shown in the video below: https://youtu.be/_o-lQ-FA3dM If you intend to independently replace the components or the matrix itself, you must consider the following:
- for the most part, the conductors have a fairly small diameter, therefore, in order to avoid damage, they must be handled very carefully;
- to restore parts, you need to have not only experience in this matter, but also stock up on good equipment: a microscope, an infrared soldering station, a set of tools for fine work with boards, etc.
How to eliminate stripes on the Samsung TV screen: https://youtu.be/kJNOy0k5_CM
Replacing the film flexible matrix cable – the process is complicated. Usually, the masters offer to replace the entire matrix so as not to bother with soldering the cable. Before embarking on such a serious repair, it is advisable to learn from mock-ups or unusable TVs. Nevertheless, such repairs are recommended to be carried out in a service center. Unfortunately, it can cost almost two-thirds of the cost of the TV, so you must first find out the price of the service, and only then make the final decision. https://youtu.be/speMUzLe3rs Stripes of various colors and sizes, ripples, streaks and other similar defects can appear on the TV screen not only due to minor damage, but also due to serious damage. They are not always amenable to self-elimination: sometimes you need to contact a service center, pay for expensive repairs and replace parts.
Я даже не думала, что цвет полосок напрямую может указывать на причину. Мы часто подключаем телевизор к ноутбуку через кабель HDMI, и вот однажды столкнулись с такой проблемой, на экране телевизора появились разноцветные полосы, когда вытянули кабель, на ноутбуке их нет, и если включить телевизор отдельно, полосок так же нет. В чем могла быть тогда проблема? Мы начали грешить на видеокарту и на ноутбук в целом. Не помню как эту проблему решил муж, но могло это быть что-то с разъемом HDMI? Плохой сигнал или какая-то поломка?
Здравствуйте. Вполне вероятно, что причиной мог быть сам разъем. Вряд ли это поломка. Разные фирмы производителей ноутбуков и разные производители телевизоров. Естественно, если пробовать настроить между ними связь, то могут возникать такие вот неполадки. Конечно, если вы уже будете замечать на самом телевизоре разноцветные полоски, без подключения ноутбука и других аксессуаров, то это уже скорее всего будет внутренняя поломка. В такой ситуации лучше обратиться в сервис для устранения неполадок.
Très cool l’explication , j’ai un soucis avec mon écran 43″ model du panel T43HVN01.3 XR ,apparition des lignes verticales complètement jaune et qui ce déplace, comment faire pour le résoudre ?
Вполне полосы могут появляться из-за экрана или раз`ёма.
Добрый день. Телевизор у нас конечно лет 10 точно, фирма Samsung. Не так давно появилась полоса горизонтальная черная. Сначала тонкая, потом стала увеличиваться. Я сначала подумала, что это выгоревшие пиксели. Имея двух детей, не удивлюсь, что они могли чего и кинуть в него. Но прочитав вашу статью, может быть и не так. Надо будет обратится к сервисную и узнать по цене. Спасибо за полезную статью.
Важно! Не стоит искать причины поломки нового телевизора. Появление полосок на экране – заводской брак, которые должны устранять по гарантии. Для этого достаточно обратиться в магазин, где покупалась техника или сервисный центр от производителя.
Merci beaucoup