When disassembling the device from the front, you should start by releasing the latches that hold the panel lining.
There are models of LCD devices, including plasma, which have a protective glass in front of the matrix. If the screen has been broken, then the protective glass will have to be changed.
After the latches are detached, you will see the matrix of the LCD TV, screwed to the body of the TV with screws that need to be removed. Please note that some screws may be duplicated by a latch ... After that, unscrew all fasteners on the back of the device, which covers the entire electronic filling of the device.
To replace the matrix in an LG, Samsung or any other TV, including a plasma TV, you will need to unscrew all the fasteners holding the rear panel of the unit and remove the stand if it is a desktop model of the device. Since screws of different lengths can be screwed in in different places on the back cover, you need to remember their location.
Next, follow these steps.
Replacing the screen in an LCD or LED TV is not a difficult task, but it requires the utmost care, since you can damage not only very thin cables on the new matrix, but also the matrix itself, as it is very sensitive to kinks. Some other TV malfunctions can also be repaired by hand.
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Replacing the matrix on the TV: LG and Samsung, repairing the Samsung screen, shaking the cable, how to change it yourself
Replacing the matrix on the TV: 5 main signs of breakdown
The replacement of the TV matrix is mainly due to careless handling of it or the rules of its operation were not followed correctly. Without a matrix, the TV, as a rule, will not work. The repair process itself depends on the complexity of its breakdown.
If water gets on the monitor, then such a repair will be delayed, as it requires a careful approach. It will not be possible to make repairs on your own, because this is a very painstaking work and only a specially trained master will be able to cope with it.
Replacing the screen with a new one can be done if the matrix flew by mechanical damage. That is, if the damage occurs upon impact, and it bursts or scratches appear on the monitor. Then you can cope with such a task with your own hands, you just have to choose the right type of matrix. Since each TV display requires its individual type, with its own main features.
The main signs indicating matrix breakage:
The usual image was replaced by vertical stripes of different colors;
Streaks and horizontal streaks have formed;
Dark circles appear on the monitor;
There are small spots on the screen of different colors;
The picture began to disappear partially or completely.
If you notice at least one sign, then you definitely need to make repairs. Restore the matrix if it has leaked or replace it with a new one. A broken matrix does not look aesthetically pleasing on a plasma TV, so it must be changed, without it the device simply will not work.
Today ice TVs and plasma TVs are not a gimmick. One of them can be found in almost every home, office or on the corner of a large supermarket. Such devices have specific breakdowns that require special repair. All well-known manufacturers: Samsung, Philips, Sony, Toshiba provide their warranty period, so the service center should provide its free services.
LCD TVs should be repaired when a microcircuit, loop, screen fails or problems arise with its backlight. All this indicates a breakdown of the matrix. It can be repaired manually or by contacting a service center.
It is sometimes impossible to fix the matrix, as the screen is cracked or completely broken. A broken matrix cannot be repaired, its restoration does not make sense. Therefore, it just needs to be replaced. But if the matrix cable is out of order above, then you can fix it yourself, using the master class lessons.
Loop repair instructions:
Disassemble the TV case;
Identify the damaged plume that needs to be repaired;
Carefully you need to disconnect the cable from the matrix, do not shake it, but pull it straight out;
Clean damaged contacts, degrease them;
Solder the contact;
Install the loop in place;
Assemble the device.
This process requires the utmost clarity and care so as not to damage the rest of the thin plumes. At the end of the work, the TV must be checked and made sure of the correctness of its actions. In order not to do such a responsible job, it will be easier to replace the damaged loop with a new one.
Each manufacturer uses an individual type of matrix for their TVs. There are three types of matrices: TN, IPS and VA. Most firms use VA and IPS matrices, as they are advanced models. They have excellent image quality, an excellent color palette and a good viewing angle.
However, these models are prone to breakdowns. Damage to the matrix occurs due to improper and careless handling of equipment. The screen should be regularly looked after, its surface should be cleaned with a soft cloth, do not use detergents and disinfectants.
The well-known company Samsung uses most of the matrix types in its production. One of them is the ltf320ap08 type. If, nevertheless, it breaks down, then it must be tried to be restored or replaced. First, we purchase the correct matrix that is suitable for your model, and then proceed with the repair.
Matrix replacement step by step:
Disassemble the TV. You need to disconnect the front of the TV from the back. The body is connected with self-tapping screws, which must be unscrewed with a screwdriver.
Place the die on a soft surface.
Disable all loops. This must be done very carefully so as not to damage the special fasteners of the loop. In this case, adhesive tape is applied to the surface of the joints.
Remove the matrix.
Connect a new element.
Assemble the device case in reverse order.
After all the work done, it is imperative to coordinate the matrix with the TV using the control panel. If this does not happen, you need to make certain settings by entering the TV menu.
Before replacing the screen in TVs from well-known manufacturers Samsung, Philips and LG, first, let's find out what a matrix is. It is a glass surface that contains a large number of pixels. They, in turn, can change the color and brightness of the image, depending on the impact of various signals from the external environment.
The matrix is the main element of TV. Each TV manufacturer uses a different type of matrix. For example, LG TVs use IPS matrices. This type does an excellent job of image clarity and contrast.
Today, LG TVs are hugely popular and are the top-selling model. However, improper handling of the TV leads to its breakdown.
Major malfunctions:
Cracked screen;
The microcircuit is out of order;
Loop problem;
Pixels have lost their functionality;
LED backlight is off.
Some malfunctions can be eliminated on your own, but more complex breakdowns (broken screen) require the help of a specialist. LG TV repair is practically no different from other devices. There are minor differences that can only be found in the design of the model itself.
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Without a matrix, the TV will not work, since it is its basic component. Replacing the matrix is not an easy task. If you are not confident in your abilities, then it is better to seek help from specialists or to a service center. They will help to identify a breakdown, replace the failed parts.
And the main reason for the failure of the matrix is the blows on it or the fall of the TV. In our practice, there has even been a case of failure of the matrix as a result of hitting the head of a parrot flying off the cabinet. The parrot is alive, the matrix is irreplaceable. This is not to mention soft toys with glass eyes flying around the room. These are the real enemies of LCD TV. We will modestly keep silent about football or champagne corks. ... With this malfunction, restoration of the matrix is impossible and we can offer you a replacement.
The next reason for the malfunction of the matrix is usually a factory defect. The manifestations of this breakdown are so varied, and have a large number of matrix-to-matrix variations, that it will be difficult to describe them in this article. The main ones are vertical stripes or columns in the image, the disappearance of an image or part of it, specific effects such as “deceleration”, “freezing” of the image, the appearance of overexposed sides in the image, smoothly turning into a normal image, and others. This is caused by faulty chips integrated into the matrix glass by means of flexible cables (flexible printed circuit boards). This malfunction can be rectified by our service laboratory. In this case, it is necessary to replace one or more flexible cables integrated into the matrix glass. This is done using special equipment and materials.
Another malfunction of the LCD matrix of the TV is color spots of completely different shapes, round, irregular shapes. This is usually caused by a defect or breakage of the glass or polarizing film. This happens both as a result of violations of operating conditions, or storage of the matrix, and due to violations of the technological process during production. In these cases, only the replacement of the matrix is possible, its repair is impossible.
In extremely rare cases, you still have to deal with cases of unsuccessful attempts to repair the matrix "after gaining" experience on the forums of handymen, or would-be masters. Here we see torn flexible cables, a cracked edge of the matrix glass. All these attempts, if successful, are very unstable, brief, and, very often, fatal to the matrix itself. The fact is that the repair of the LCD matrix - in addition to the recovery itself, also includes correct assembly and disassembly and many other operations, and even if you managed to fix something, it will not always be possible to assemble it correctly. One wrong move and the matrix is split! She is extremely fragile. Especially matrix sizes over 32 inches.
The liquid crystal matrix of a TV is an extremely vulnerable element. Especially considering that its design is 2 half-millimeter thick, glued together glass, with a size of more than 82 cm in the diagonal - this is probably the most fragile glass creation. And matrix elements, in addition to glass, are also extremely easily damaged. This clearly requires a qualified approach to the repair of dies, as well as the availability of the necessary equipment and devices for the repair. We have at our disposal everything you need for repair, testing of liquid crystal or LCD matrices. And the most important thing is the great experience accumulated over the years of matrix repair. We strongly advise against trying to repair the matrix yourself, as this may lead to the loss of its recreational properties.If the matrix of your device cannot be restored, we will replace the LCD matrix of the TV.
The most common cause of a TV or monitor malfunction is the data loop. The main signs that indicate damage to this part are:
The first method is more complicated, but there is no need to purchase a new part. It is much easier to replace, but some models of TVs and monitors have long been discontinued, and it is rather difficult to purchase parts for them.
The process of replacing a loop must be performed with extreme caution. A tool is required to perform this operation. A number of items are required, such as:
For small parts, screws and bolts, you should definitely purchase a separate container. Losing them is extremely undesirable; in the absence of important parts, assembly and normal operation of the device will simply become impossible.
To get to the monitor cable, you need to disassemble its case. This operation is performed in the following order:
the back plastic cover is snapped off with a knife or slotted screwdriver - under it there are four screws for a Phillips screwdriver;
using the opening tool, pry off the front frame of the monitor and carefully move it aside, while you must be as careful as possible, since there are buttons on the front panel (the data cable is soldered to the board, there is no connector);
using tweezers or just using your fingers, you need to disconnect the connector of the button block;
the shielding gasket of the monitor unit is dismantled - it is necessary to do this as carefully as possible in order to avoid damage (if there is damage to this part, a large amount of interference may occur);
under the cover are the backlight connectors - you need to carefully pry each one with a screwdriver and push it towards you.
After completing all the above actions, you can proceed directly to disconnecting the loop of the screen matrix itself. To do this, you need to use the special latches on the sides. One end of this part is connected directly to the matrix, the other to the electronic board.
it is important to preserve the original shape of the loop - do not bend it, as this can lead to breakage of the conductors;
when disconnecting from the board, it is important to do everything very carefully, without making unnecessary efforts - by pressing hard on the circuit, you can easily damage it.
When the old cable is disconnected, you need to install a new one in its place. This operation also has some peculiarities:
when connecting the connector, it is necessary to perform the “male-female” connection as carefully as possible - by pressing hard when a skew occurs, the contacts can be damaged (this will lead to the need for complex repairs);
you should make sure that the new cable will not interfere with the subsequent assembly - it is advisable to give it a shape similar to the one being replaced.
the thin conductors of the loop were subjected to mechanical stress, as a result of which they broke.
Repairing the matrix loop using a soldering station or a special hair dryer is quite complicated. That is why, if it breaks down or breaks, you can proceed as follows:
the resulting adhesive surface will serve as the basis for a special seal, on which foam rubber or similar material is glued (it will help create a strong contact in the conductors of the loop);
on top of the loop itself, double-sided tape is also glued, foam rubber is again placed on it.
The glued foam acts as a sealing cushion. This method is relatively reliable: if the monitor is not moved, then in this state it can serve for a very long time.
You can restore the matrix loop by soldering. To perform this operation, you will need the following items:
If thin conductors are damaged, you can simply solder them, it is enough just to heat the metal to a sufficiently high temperature.To get a tight connection, you should simply cut out the damaged area with scissors and ensure a sufficiently tight contact between the tracks. After that, putting the parts of the train on a special lining, you should simply heat them up, aligning the individual tracks with each other as accurately as possible.
The thickness of the conductors in some places is quite small, so you should use a magnifying glass. This item will minimize the likelihood of defects: adhesions of individual cores to each other, or, conversely, the appearance of unsoldered places.
You can also use other equipment to accomplish a similar task. It is only important that it can solder the tracks with a mother-in-law of approximately 0.06 mm as accurately as possible - this is the size of the conductors located inside the loop.
If there is oxide or carbon deposits on the plume, its individual parts, it is necessary to remove them with distilled water or pure alcohol. After performing this operation, be sure to check the voltage at the contacts with the device turned on. Or simply ring the loop with a multimeter. If there are damages in the conductors, it is necessary to determine the location of the defect as accurately as possible, and then carefully examine it under a magnifying glass.
If the conductors are long enough to solder, you can simply connect them and heat them well with an infrared soldering iron. Or heat it up with a hair dryer. After completing this operation, you must again check the presence of voltage on the contacts.
When soldering, it is necessary to observe the temperature regime as accurately as possible. To do this, determine what metal is used in a particular loop and set the desired temperature on the soldering equipment. If the melting temperature is significantly exceeded, then the metal will simply spread over the surface. This will make the repair impossible. It is important to avoid delamination of the PCB from which the board is made.
Thanks for the detailed information. But I just need to change the train. I have a question .... how much does it cost and what is the guarantee.
Hey! Everywhere a different price and guarantee, too.
Good afternoon. Can you please tell me, the LEDs in the backlight burned out on my LG 55LB650V TV (there was a power surge), I replaced them myself, but after assembling the TV, a black vertical strip appeared on the left of 1.5 cm. Maybe I damaged something? Thank you.
Hey! Perhaps I inserted the loops on the t-con board badly, or this board might be out of order. also can be damaged matrix cables.
Could it have happened from a power surge ...? And how long can a TV work like this with a strip, or should it be eliminated?
It could have been ... how long? maybe a day, maybe 5 years ...
Hello.
Hey! Well ... I would look at the loops, for starters, and the t-con board.
Got it, thank you very much - we will look ...
Hello! Tell us in general terms the procedure for my situation. There is a Samsung 8 series TV with a broken matrix, and there is a simpler Samsung TV, how best to connect them until I find a suitable matrix?
Hello. I have a samsung UE40d500 TV when turned on, it shows in stripes and after half an hour it shows a blurry picture like in 3d. What can be faulty and is it worth giving for repairs, or will it be better to buy a new TV?
This may be a malfunction of the matrix, loops. If a matrix, then a new one is better.
Samsung UE32F6400AK
Why, there may well be malfunctions in the matrix loops.But maybe the Khan's matrix.
I changed the capacitor of the LG Flatron L1530s monitor and during assembly I damaged the connector of the cable on the matrix, at first it bent and began to correct the broken wire. What can I do?
Recovery of loops requires a lot of experience and knowledge, so it is better to contact a specialist.
Hello Victor, after the bending of the antenna socket and opening for inspection and pressing with a finger for the initial position on the Samsung LED TV, two dark gray, very thin as a thread, horizontal lines appeared exactly in the middle at a distance of 5 mm from each other, which at the end disappear completely, their visibility is different in area, at first it is not at all visible at all at the end, flooding with water, poor contact, etc., I opened, moved the trains did not notice anything, kinks, dirt, etc. infoy only about vertical - bad contact or kink in the loop, which in my case is not, tell me your thoughts please!
Modern TVs, possessing many previously unseen functions, nevertheless, have some design flaws that, under certain conditions, can cause breakdown. In some TV models, manufacturers have placed the electronics of the matrix device at the very bottom of the screen. This decision seemed to be quite justified, since it provided conditions for full cooling of all matrix elements. But in practice, this has led to a number of problems.
If earlier TVs were resistant to the ingress of a small amount of liquid on the screen, now moisture flowing down the plume , goes directly to the board and causes oxidation of trace elements ... Of course, TV viewers are unlikely to deliberately pour water on TV screens - most often moisture gets on the screen during cleaning or because of children's pranks. Such negligence leads to very serious consequences, for the eradication of which it is required to carry out a procedure for the complete restoration of the TV matrix after flooding.
The malfunction of the matrix becomes noticeable immediately. The channels are switched, the sound remains the same, but the image disappears, and the matrix signals a breakdown with a blue screen glow. These signs are enough for an experienced technician to determine the cause of the TV malfunction, and additional diagnostics serve to confirm the initial diagnosis and to clarify the scale of the disaster. Refurbishment work carried out by ITKomp will help restore the full functionality of the device.
It should be understood that the matrix is the most expensive element of the TV , therefore, its replacement is not at all cost-effective. It is carried out only if it is completely impossible to restore the operation of the TV with the help of ordinary repair actions, moreover, in Belarus can't find matrices to most models. For the same reason, you should not try to repair it yourself. Lack of skills in such delicate and responsible work will become an insurmountable obstacle to the restoration of the matrix. In other words, you will not be able to repair it, but subsequent repairs due to your unskilled intervention may be difficult.
In the worst case, the matrix will be unsuitable for restoration, and your costs for buying a new TV set will many times exceed the estimated cost of timely repair. Even if you succeed in getting the picture to appear, the chances of the TV's prolonged use will be greatly reduced. The matrix is a very fragile device, and one awkward movement can cause the plume to break or crack the glass.
Another reason to entrust the restoration of the matrix after pouring to the experienced craftsmen of ITKomp is the complexity of disassembly and subsequent assembly of the device. Incorrect performance of these operations also carries an additional risk of complete loss of matrix performance. At the same time, ITkomp specialists have the opportunity to use special equipment and necessary spare parts to repair a faulty device.
But the main thing is that they have invaluable experience in repairing numerous electronic equipment, which helps them to cope with the most difficult breakdowns and at the same time perform it with high quality.
Post-repair testing allows you to check the quality of the restoration work, which gives us the opportunity to guarantee the full operation of your TV for a long time. So, if liquid gets on the screen and it stops broadcasting the image, contact us, and ITKomp engineers will be able to quickly and efficiently return a perfectly working TV to your home.
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