Stripes On Samsung Tv Screen Reasons
Horizontal bar on TV screen
Horizontal bar on TV screen
This type of TV malfunction is perhaps in third place after the line and power supply failures. A narrow horizontal white stripe on the TV screen indicates a malfunction of the vertical scan.
A malfunction such as a horizontal stripe on the TV screen can occur for several reasons:
Faulty personnel microcircuit;
It can manifest itself in different ways. It is a bright narrow horizontal strip on the screen or a strip 3-4 cm wide.It depends on which element and which cascade is faulty.
Perhaps you need to start with the simplest, check the microcircuit and its strapping for the presence of ring cracks in the soldering. For some, they appear even after a year of operation (for example, with Erisson), for others after many years, here it is enough to solder the leads to eliminate the malfunction.
Next, we check for the presence of supply voltages. Depending on the microcircuit used, the voltage can be one or two, for example 9 volts and 45 volts. The low voltage feeds the preliminary stage of the microcircuit, and the high voltage feeds the output stage.
The power supply of the KR is mainly carried out from the TDKS, however, there are TVs in which voltages are supplied from the power supply.
Let’s consider the CD of the Rolsen 72FS10T-5 TV on the TDA8356 chip
The power supply of the KR is carried out with a voltage of 16 V (pin 3) and 45 V (pin 6) through break resistors R405. 1 Ohm and R416 22 Ohm. When these resistors break, a horizontal strip will be observed on the TV screen. A break in these resistors may indicate a malfunction of the personnel microcircuit or some kind of load in the KR. If the resistors are intact, then the microcircuit is most likely alive and it is necessary to change the electrolytes in its strapping.
As I wrote above, a horizontal stripe on the TV screen may appear with faulty capacitors in the strapping of the personnel microcircuit. Here, the very first thing you should pay attention to is whether there are swollen capacitors on the power supply of the microcircuit and in the output stage (usually these are large capacitors 1000-2000 uF). For example, let’s look at the Rolsen C2135 TV set:
Here we change the main ones: C406. For power supply, C405. Voltage boost, C406. The best thing is to check the parts by replacing, but in some cases you can “throw in” an additional capacitance, that is, solder the capacitor and see the result.
When analyzing the performance of the microcircuit, see if there is any damage on the case, and if it is getting hot. You can also check it in this way, evaporate the microcircuit and check the resistance of the power leads (in this case, 3 and 6) to the negative terminal (case), there should not be a short circuit and too little resistance.
Of course, a malfunction with a horizontal stripe on the TV screen can also occur with the release of other elements, for example, the breakage of frame coils, but they are quite rare and I have never come across.
How to fix the problem with stripes on the TV screen
Stripes on the screen are a symptom of a malfunctioning TV or problems with the incoming signal. According to them, an experienced telemaster can identify and eliminate the breakdown. The stripes on the screen prevent the user from comfortably watching movies and TV shows.
The most common causes of streaking are:
Problems with the signal source from the repeater or antenna. In the second case, powerful devices next to your antenna, its incorrect installation or configuration are to blame.
You can try to fix the first two problems yourself, and it is better to entrust the repair of the device to professionals.
Possible causes of image integrity violation
First of all, carefully check all connectors. Avoid the possibility of a loose peripheral cable or clogged output. After that enter the TV menu and select automatic settings. If stripes appear on the screen of your LCD TV, then the problem lies inside.
You can observe both vertical and horizontal stripes, which have the same nature of occurrence and are eliminated using the same techniques. It is important to remember that no TV is immune from such problems. Even the top LCD TVs from Samsung, Sony, LG, Philips are just household appliances that are subject to both external and internal influences.
|External manifestations||Probable malfunction|
|Thin vertical line||Matrix error|
|One or more colored vertical lines||Matrix defect|
|Multicolored horizontal stripes, stains||Disconnecting the contact loop from the matrix|
|White horizontal line||Frame alignment defect|
|Black vertical or horizontal stripes||Decoder failure|
A narrow vertical line indicates an occasional single die error that could have been caused by an unexpected voltage drop. In this case, it is worth waiting for a while, the strip may disappear by itself.
One or more vertical stripes of a certain color is an indicator of matrix breakage. It is undesirable to waste time, because their number can increase and occupy the entire screen. In case of minor damage, repair is possible, in case of an extensive defect, a complete replacement of the matrix may be required.
Horizontal stripes of different colors, streaks, ripples and screen distortion are the result of the connection of the contact cable to the matrix being weakened or missing. To eliminate the malfunction, simply re-solder the contacts.
A thin white horizontal line indicates a frame defect. It can appear due to constant voltage surges, short circuits or a lightning discharge, after which the contacts melt, and cracks appear on the microcircuit. The necessary measures depend on the degree of damage.
Vertical or horizontal black stripes without a single pixel require the most expensive repairs. Usually they mean a breakdown of the decoder, so you have to change the entire matrix completely. Otherwise, these lines will get wider and wider until they finally fill the entire screen.
Preventing the appearance of stripes on the screen
Do not worry if streaking occurs on the LCD TV screen. Almost all breakdowns are subject to repair. Fortunately, today the official services of large TV manufacturers. Samsung, Phillips, Sony, Panasonic, LG. Are available in almost all cities of Russia. Over, if your device is still under warranty, the repair procedure will cost you completely free. Read also how to independently remove scratches from the screen and check the TV for dead pixels.
How to remove stripes on a TV screen
Screen. This is one of the most vulnerable spots on any TV. On it, you may notice broken pixels or streaks. There can be many reasons for such defects, so do not get depressed and criticize the manufacturer’s firm! 🙂 The Chief Television Matrix Specialist from TechnoExpert will answer frequently asked questions and share helpful tips. Where do the stripes come from on the TV screen and how to fix it? Let’s talk about everything in order.
When the image on the screen is distorted and various interference appears, the viewing no longer brings satisfaction, and sometimes it becomes completely impossible.
The first thing to do is check the cable connection and the connector itself. There are times when the jack is clogged or the cable is loose, which can cause interference. Second point: check your TV picture settings and reset them to default. If the manipulations did not bring results, then you have a serious breakdown that should be found and eliminated.
Vertical stripes on TV
If one or several vertical stripes appear on your LCD TV, then the main reasons for this defect are as follows:
Thin vertical stripes of the same color indicate a faulty sensor. Such artifacts can disappear as suddenly as they appeared. So watch for a couple of days. If nothing has changed, then immediately call us for an urgent free diagnostics!
If the stripes are of different widths and colors, small ripples appear and disappear on the screen, this indicates problems with the matrix loop. Insufficient contact of the loop with the panel or T-con board is most often the cause of failure. It is necessary to remove the back cover and gently move the cable going to the screen while the power is on. If the reason is in it, then you will immediately notice that the stripes on the screen are gone. If there are no improvements, then call the wizard. This requires professional intervention!
Horizontal stripes on the TV screen
Horizontal stripes occur in the same cases as vertical stripes, and are eliminated in similar ways. Remember that not in all cases the passage of the strip on the TV screen means an urgent replacement of the matrix! If the malfunction is detected in time, you can count on inexpensive repairs for your TV! Loose fit of the matrix loop, checking the loop wiring, replacing the matrix loop, repairing the T-con board, replacing the matrix itself. Far from the entire list of our services for eliminating vertical and horizontal stripes on the screen of Samsung, LG, Thomson and other TVs!
Contact the TechnoExpert Service Center by phone 7 (804) 333-04-31. Courier call in Kaliningrad and TV diagnostics. Free!
Can’t tune channels
If your TV automatically tunes channels, but does not store them, then the problem is serious enough, the TV’s memory chips may be faulty. Such a breakdown can only be corrected by an experienced master, diagnosed and replaced with faulty parts. It also happens that channels are tuned only manually, automatic tuning does not work, the reason for this is a malfunction of the microcontroller. In this case, you can continue to use the manual setting, if this is not critical for you.
One of the primary colors is missing from the image on the TV screen
The absence of any color in the image on the TV screen indicates a malfunction of the color module, but there may be other reasons, for example. Malfunction of the amplifier, elements on the module board, microcircuit. In CRT TVs, the absence of red indicates a malfunction of the CRT or color channel. If there is no green color, a possible cause may be a problem with the contacts on the board. Colored spots on the TV picture tube indicate a malfunction of the system of its demagnetization, if there are no objects nearby that provoked this phenomenon (they can be removed and everything will return to normal), then the picture tube must be replaced.
Stripes on the TV screen
Streaks on the TV screen indicate a serious problem. The simplest malfunction in this case. These are problems with the contact of the loop. The line or frame scan unit may be faulty. Also, stripes on the TV screen can be an indicator of a malfunction of the matrix. For an accurate diagnosis, it is recommended to invite an experienced specialist who, after inspection, will say what exactly causes this malfunction.
Lcd TV malfunctions
The LCD TV display consists of an LCD matrix with backlight, the backlight is lamp or LCD. The LCD matrix, in turn, consists of pixels. Even a new TV set has dead pixels is an acceptable defect. The international standard allows 4 classes of quality for LCD displays and only the highest class does not allow for dead pixels.
A malfunction of an LCD TV such as screen flickering can be caused by a breakdown of the backlight or a malfunction of its cooling system. Stripes on the LCD TV screen or lack of color indicates a malfunction in: the processor, transformer or amplifier.
An important part of the LCD TV is the power supply; many TV malfunctions occur due to its breakdowns. Unstable voltage in the mains is very harmful for the power supply, in order to avoid and prevent many malfunctions of the LCD TV, it is recommended to install a voltage stabilizer.
A narrow vertical strip on the LCD TV screen signals a malfunction of the line scan transformer, only a specialist with special skills and knowledge can repair this breakdown.
No signal and snow on the screen are symptoms of a malfunctioning antenna or antenna cable, and the tuner may also be faulty with such symptoms. The same symptoms can be detected in the absence of a radio channel or contact at the signal reception input.
Tv does not turn on
In the event that your TV stops turning on, the wire and the outlet are working properly, then this malfunction may be involved. Inverter power supply unit or horizontal and vertical scan units. Consistent diagnostics will allow you to identify the malfunction and make repairs.
Malfunctions of TVs. Causes and remedies
You can call an experienced technician to repair your TV at home by calling 7 (812) 327-69-23
For a complete diagnosis of a faulty TV, a visual inspection is required, both outside and inside the device. If the malfunction is not complex, there is an opportunity for self-repair. For example, a faulty TV remote control can be easily disassembled and cleaned, as well as replaced with dead batteries. It is also not difficult to replace the faulty wire, if, of course, it was possible to understand for sure that the problem is in it. In modern TV, internal parts and assemblies are most often completely replaced.
Internal components and parts of the TV are subject to breakdowns, most often a malfunction can be detected:
- In the electrical control unit;
- The power supply may burn out;
- Malfunction of the intermediate and low frequency amplifier;
- Breakdown of the radio channel selector;
- Faulty color module or sync selector;
- Failure of the color module;
- Malfunction of blocks of frame and line scan;
- Breakdown of the TV matrix.
Possible reasons for the appearance
Horizontal and vertical stripes may appear on the screen of the TV receiver, sometimes various defects may indicate one breakdown. Therefore it is very important to understand as much as possible which bands may occur and which breakdown indicate.
There is no such technique that would be insured against failure of any system modules. Even TVs from world famous manufacturers like LG, Samsung and Sony break down from time to time. The probable cause of a breakdown can be determined by the nature of the stripes.
A vertically positioned black bar often indicates a malfunction of the matrix. The reason for such an unpleasant phenomenon is most often a sudden power surge. However, there is no need to rush to the service center, and even more so to disassemble the TV yourself. It is likely that after a couple of days the malfunction will disappear by itself. You need to disconnect the device from the power supply, and after a while reconnect it.
The appearance of one or several dark or light lines appear. The reason for the failure of the matrix. In this case, it is not worth tightening with the repair, since after a short period of time the number of strips will only increase, and their width will increase. If the matrix is not completely broken, then a large-scale repair will still be required. The damage is usually eliminated by a complete replacement of the block.
If distortions appear on the image transmitting device and horizontal colored LED strips appear, then this indicates the incorrect operation of the matrix contact loop.
A thin, snow-white horizontal stripe that runs at the top of the screen, in the middle or bottom, usually occurs due to problems with vertical scanning. The cause of such a malfunction is usually a short circuit associated with sudden voltage fluctuations. Due to too high a voltage, the contacts begin to melt, and the microcircuit becomes cracked.
The most difficult malfunction is represented by black stripes, regardless of whether they are located horizontally or vertically. Eliminating such a strip requires significant financial investments. Most often, such a defect indicates a malfunction of the decoder, therefore the craftsmen are forced to change the entire matrix. If this is not done, then gradually the number of black bars will grow, and in addition, they will become wider, making it impossible to comfortably watch TV programs and movies.
Stripes from top to bottom in combination with spots of various sizes often appear due to moisture getting inside the TV. In this case, the plasma matrix is destroyed.
Colored lines of a similar direction appear due to corrosion processes that began in the matrix.
In fairness, we note that the appearance of stripes does not always indicate a serious malfunction and does not mean that the TV must be carried to a professional craftsman as soon as possible. Sometimes they arise due to the user’s negligence, this may be due to dust getting into the device or incorrectly set image settings. Both problems can be solved independently.
To do this, go through the menu to the TV settings. After that select the “Support” option. In it, click on the “Self-diagnosis” block. Then it remains only to start testing the image.
If the reason why stripes appeared on the TV screen is of software origin, then the system should be flashed, for this a number of sequential manipulations are performed:
- Connect the TV receiver via cable or Wi-Fi to the Internet;
- In the opened settings find the “Support” block;
- Select “Software Update”.
After that, the system will automatically start checking for correct updates. It is imperative to wait until it finishes downloading, as a rule, the time directly depends on the speed of the Internet connection.
Stripes on the TV screen: causes and elimination of breakdowns
Possible reasons for the appearance
The appearance of stripes on the TV screen is one of the most common defects, while stripes can have very different directions (horizontal and vertical), as well as differ in color (most often black and white, blue, red, gray, almost transparent or multi-colored). In any case, their appearance directly indicates a hardware malfunction of the TV receiver, this may be the result of mechanical shock, short circuit or system failure.
In our review, we will dwell in more detail on clarifying the causes of such breakdowns and give recommendations on what to do to the owner of the equipment if he is faced with such an unpleasant situation.
Replacing the loop
Another common reason for the appearance of stripes on the TV display is the breakdown of the matrix loop. Such a defect is very easy to determine; for this you need to slightly move the train or slightly press on it. If at the moment of contact the defects disappear, therefore, the cause of the malfunction is diagnosed correctly.
In order to correct the situation, you should take a magnifying glass, and then use it to find the area of damage to the loop wiring. Keep in mind that it will not be easy to do this. Such a repair is a very painstaking and almost jewelry work. The restoration of the coating takes place by heating the contacts to a certain temperature or using a conductive varnish. It is best to entrust this work to professionals, because even the slightest overheating often leads to an aggravation of the problem.
The matrix cable (from the point of view of the TV design) is a hardware connecting block. In order to remove it, you need to untwist the television panel and remove some of the parts. Almost all manufacturers install standard fasteners, for this reason, the bolts must be unscrewed strictly against the natural direction of movement of the clockwise. In some models, the connecting cable and related wiring are fixed directly to the cover, in this situation, during the parsing of the TV, remove the parts very smoothly so that nothing in them is damaged.
If the matrix and its components are damaged
Lines that appear unexpectedly also indicate this problem. Such a nuisance, as a rule, appears due to a short circuit or mechanical damage. It so happens that after a couple of days, the stripes pass by themselves, but if 5-7 days have passed, and the defects remain, then this indicates a serious problem with the equipment. It is very difficult to replace the matrix on your own, therefore such repair work should be carried out exclusively in service workshops. However, the cost of such services usually reaches 70-80% of the price of a new TV. That is why, to begin with, be sure to find out how much the restoration will cost you, and only after that make a decision whether to agree to repair or refuse it. It is possible that service maintenance will be simply unprofitable for you.
If you notice thin lines of dark color on the screen of a television device, it means that the matrix decoder is out of order. Their width will only increase over time, so there is no need to delay the repair. It is better to immediately contact the craftsmen, and to do this the sooner the better.
In some cases, all conductors are compact and lightweight, so it is likely that during work you will damage one of the existing conductors by careless handling. For work, you will need not only professional skills, but also the appropriate tools: magnifying magnifiers, IR soldering station and some others.
Stripes and other defects on the screen surface can be the result of both minor and serious breakdowns, so users often face the question of whether it is worth doing repairs on their own. Yes, when it comes to stripping, for example, a cable from the current. But you do not need to replace any important system modules at home. The risk that you will permanently disable the equipment is very high.
How to remove stripes?
The presence of any stripes on the screen interferes with the comfortable viewing of films and programs. Corrective actions directly depend on the origin of the problem. So, if the stripes appeared after the TV fell, or as a result of an impact, then in this case, damage to the LCD crystals and their joints, as well as the transparent inner glass, usually occurs. In this case, replacing the internal elements of the matrix will not work. The panel must be completely replaced.
There are other reasons too.
It is easy to guess that the cause of this malfunction is the user, namely his violation of the operating conditions of the equipment. A single-color vertical stripe on the TV screen is a sign of matrix mechanical damage. This is a very narrow line, its width does not exceed two pixels.
In some situations, this defect appears, but later disappears. If more than 7 days have passed since the strip appeared, then this is a sign of serious hardware damage to the TV.
Replacing the matrix is an extremely time consuming and costly process. Therefore, if the fears were confirmed, and the strip appeared on the Samsung TV due to damage to the matrix, it makes sense to think about purchasing new technology. If the warranty period has not expired, then contact the service center representatives.
You absolutely will not be able to replace the damaged matrix yourself. Since this requires special equipment. The use of improvised means will provoke an aggravation of the malfunction. It is more rational to contact the service center.
In addition to the breakdown of the matrix itself, there are also violations in the operation of its components. For example, the appearance of black lines on the screen is a sign of failure of the column decoder, which is located directly on the matrix. Over time, the line thickness will increase. Therefore, it is not worth delaying the repair.
If you want to repair the TV yourself, then you need to take into account several important points:
Mostly all cables, loops and conductors are very thin. They can be easily damaged. Therefore, you need to be as careful as possible.
Other mechanical damage
Black horizontal stripes on the TV screen may occur due to cable connection problems. To fix the problem, it is enough to disassemble the TV, and then connect the cables correctly. It is possible that some conductors are damaged as a result of mechanical damage. In this case, they need to be replaced.
A white narrow horizontal stripe on the TV screen may also appear due to the broken matrix wires. It is extremely easy to determine this breakdown, slightly press on the cable or move it to the side: if all defects disappear, then the malfunction is diagnosed correctly. Eliminating such a malfunction is an extremely difficult process. Use a magnifying glass or other magnifying tool to locate where the wires are broken. The restoration is carried out using conductive varnish or by heating the contacts to an appropriate temperature. If you overheat the contacts, the malfunction will be aggravated.
In some situations, stripes on the screen appear due to damage to the matrix loop. Broken conductors are not always amenable to restoration. Sometimes you have to replace them with new components. You can order a new cable at the service center, inform the managers of your TV model in advance.
It is better to entrust the elimination of hardware breakdowns to the masters, but if you want to do everything yourself, then you need to prepare the following tools: screwdrivers or bits PH, PZ, TORX, HEX, SL. The matrix connecting cable is located inside the TV, so work begins with removing the back cover. Unscrew all screws and gradually open access to the broken component.
All connections are fastened with special connectors. There is no need to solder the wires. It is enough to slightly press on the latch. The connection principle can be compared to an Ethernet cable.
The arrangement system of the base modules is different for all manufacturers. Therefore, you need to carefully study the detail of the assembly. You can find it on the Internet on the official website of the manufacturer.
Reasons for malfunction
Vertical and horizontal stripes on a TV screen are not always an indicator of serious technical malfunctions. Such defects can appear for easily explainable reasons:
Stripes on the Samsung TV screen may also appear intermittently. This defect is mainly accompanied by flickering of the picture, “sticking” of the frame or other distortions. All these nuances are of tremendous importance. Since they allow you to determine the nature of the breakdown.
Thin vertical line
Mechanical damage to the matrix
Vertical multicolored stripes
Malfunctions of matrix components
Colored horizontal lines, spots
Bad contact of the matrix loop
Horizontal stripe white
Frame scan defect
Conventionally, all the reasons for the incorrect operation of the TV can be divided into several groups: mechanical damage, short circuits, incorrect settings. The last category does not need further study. Consider the subtleties of determining the failure of hardware components, as well as the features of their recovery.
Why are there vertical stripes on my Samsung TV
During operation, the TV is exposed to mechanical damage. Because of this, there are malfunctions in the operation of hardware modules, which manifest themselves in the form of various defects. Vertical stripes on a Samsung TV screen may indicate the failure of several modules at once.
Now let’s take a closer look at how to quickly diagnose a TV failure. We will analyze the troubleshooting methods, as well as compile a list of useful recommendations to prevent all kinds of defects from appearing on the TV screen.
Ingress of moisture
Due to the ingress of moisture inside the LCD TV, oxidation of the contacts occurs. You can determine this breakdown by the characteristic green coating on the loops and contacts. If the scale of the malfunction is insignificant, then you can remove plaque from the surface of the conductor yourself. Cleaning with a knife or blade.
When, due to moisture, large stripes or spots appear at the bottom or in the middle of the screen, then the problem has reached a serious scale. The situation cannot be solved simply by removing plaque. First, you need to check the voltage of the contact circuit with a multimeter. In this case, contact the service center.
Moisture will break the LED backlight. Therefore, blackouts may appear in certain areas of the screen. It is possible that the problem arose due to improper care. Under no circumstances should you spray copious amounts of cleaning agents onto the screen surface. Special liquids need to be sprayed onto a microfiber or dry cloth, and only then wipe the display.