If you have a large modern TV and it suddenly breaks down, the worst thing that can happen to it is a faulty display. The TV may stop showing an image, or stripes or cracks may appear on the screen. And, of course, you have a legitimate question: which is easier—call a specialist or buy a new TV?
Let me say right away: if your TV screen is broken and it doesn’t have a warranty or protection plan, then repairing such a TV is impractical, as repairs are expensive and time-consuming. The display accounts for 80% of the cost of the TV. It will be easier for you to dispose of the TV. To save money, you can sell the internal components, power supply, and motherboard to recoup some of the cost of the TV. But there are cases when you can request a replacement TV display.
What types of televisions are there?
CRT (Cathode Ray Tube) is the true pioneer of television technology. Anyone born before 2000 is familiar with these sets. CRT TVs were large, heavy, and bulky due to the picture tube inside. Today, this technology is completely obsolete and no longer manufactured.
Plasma TVs replaced CRT models by offering larger screen sizes and improved picture quality. Their operation is based on applying an electrical charge to tiny cells filled with a mixture of inert gases. When energized, these gases emit ultraviolet light, which excites phosphors to produce an image on the screen. However, plasma technology has also become obsolete, and production officially ended in 2014.
LCD (Liquid Crystal Display) technology emerged as a more compact and energy-efficient alternative to plasma. Unlike plasma panels, LCD screens are thin and lightweight, making them easy to mount on walls or place on stands. In an LCD TV, liquid crystals are positioned between two layers of glass and regulate the passage of light to create an image.
LED TVs are essentially a variation of LCD TVs but use a different type of backlighting. Instead of fluorescent lamps, they rely on light-emitting diodes, which improve brightness, contrast, and energy efficiency.
OLED (Organic Light Emitting Diodes) technology works differently, as each pixel emits its own light and can be switched on or off independently. This allows for highly accurate color reproduction and deep blacks. OLED screens are extremely thin and lightweight, though they remain relatively fragile because they are built on a thin layer of glass.
What causes damage to the TV screen?
Physical impact on the TV screen: One of the most common causes of TV screen damage is physical impact. Whether it’s a flying video game controller, a child’s toy, or even accidental contact while moving the TV, the display can crack.
Burn-in: This primarily affects OLED and older plasma TVs. Burn-in occurs when a static image is left on the screen for an extended period, resulting in a ghostly mark on the display forever. This can be anything from logos and TV channel tickers to paused video game graphics.
Overheating: All electronic devices generate heat, and TVs are no exception. If a TV is not properly ventilated or is located near a heat source such as a radiator, it can overheat. High temperatures can damage the glass, which is the backbone of LED and OLED screens, and it can crack.
Electrical problems: Any LED or OLED screen has a control board that controls the screen; it can break. Also, LED TVs have a backlight, which can break, especially in cheap TVs.
Humidity and dampness: Exposure to moisture can also damage the TV screen; TV displays are not designed to operate in high humidity. Of course, there are TVs designed to work outdoors; they have extra protection.
Improper cleaning of the screen: Despite seemingly harmless, using the wrong cleaning products for your TV screen can lead to problems. Alcohol or ammonia-based cleaners can destroy the protective coating on many screens, leading to clouding or discoloration over time.
How do I know if my TV screen is broken?
In order to determine whether it is worth repairing your TV, you need to diagnose it and find out what exactly is not working. In fact, there can be about a hundred variants of malfunctions. Some malfunctions may be typical and appear on many TVs, such as a backlight malfunction. Other faults can be very individual and difficult to fix.
The most obvious sign of a broken TV screen is that there is sound but no picture. This means that the TV’s main board and power supply are working, but the screen, alas, is faulty. Next, check the TV screen for visible damage. Cracks, glass shards, or spider web-like patterns indicate physical damage. If you notice any of these signs, the screen is undoubtedly broken and unusable.
If you have an LED TV and lines, appear on it: If unusual colors or lines appear on your TV screen that won’t disappear, this could be another sign of screen damage. Vertical or horizontal lines indicate a display malfunction, usually when the pixel control circuitry is broken. Such a malfunction is not curable; such a TV can be watched, but the lines will be annoying.
In an LED TV, part of the screen is darkened or has bright spots: This is a defect of the backlight; if part of the TV screen is dark, then one of the backlight lines is defective. And if you see bright spots on the screen, it is usually in TVs with direct backlight, dried up and fell off the scattering lens on the LED. If, in such a TV, the LED stops shining, the screen will appear in places with weak illumination dark spots. This TV has a very cheap screen; cheap is a synonym for poor quality. Even Samsung, in the budget series, has this problem. So I think that if the TV belongs to the budget series, the probability that the display is of low quality is very high.
The TV screen is dark: Black screen, everything is straightforward; check if the screen backlight works (LED TVs). Turn on the TV in the dark and look at the screen; if the screen is glowing, then the backlight is working. So there is a malfunction in the display control circuitry.
LED TV screen flickering: Screen flickering may indicate a power supply failure or display malfunction. Further diagnostics are required. It is usually a power supply board malfunction.
LED, OLED TVs, Dead pixels: Dead or stuck pixels can look like tiny dots on the screen, usually red, green, or blue, that do not change color. This is extremely rare in modern TVs, and yes, it is a screen malfunction and cannot be repaired.
Distorted, floating, wavy, blurred image: If a distorted image appears on the TV screen, there are usually two possibilities:
Display malfunction, most likely related to overheating. Try letting the TV cool down first and see if the problem appears immediately after turning it on or after some time.
A problem with the digital stream processing algorithm could be the second cause: updating the TV software. This does not happen in Sony, Samsung, and LG TVs.
Lack of picture and sound: The TV is defective and most likely it is a problem with the power supply unit or the main board. To diagnose the TV, you need to invite a specialist to diagnose the problem. When diagnosing, check whether the power supply unit is supplied with the necessary voltage. And whether the power supply is working.
What Causes TV Screen Damage and Is It Worth Repairing?
Statistically, most TV screen failures are caused by mechanical damage — in other words, a cracked or shattered panel. Screens are fragile, especially in large-format TVs, and even a minor impact during transportation, installation, or everyday use can lead to irreversible damage. There are also cases where a screen stops working due to manufacturing defects, but proving this can be difficult, particularly with budget models. In general, however, modern large TV panels are quite reliable. That said, there have been exceptions. For example, Samsung experienced backlight failures and overheating issues in some Crystal series models around 2016–2017. Similarly, according to consumer feedback at the time, certain older Hisense TVs were known for having particularly fragile screens, with some customers discovering cracks immediately after unpacking.
If your LED or OLED TV screen is broken, it is important to understand that the panel itself cannot be repaired. Any claims that cracks can be fixed are misleading. A shattered screen can only be fully replaced — and in most cases, this is not economically practical. Replacing a TV panel presents several serious challenges.
The primary issue is that manufacturers generally do not sell TV panels as retail spare parts. Service centers receive a limited number of replacement screens through official regional warehouses, mainly for warranty cases. If your TV is still under warranty and the damage qualifies for coverage, the service center may replace the screen. Outside of warranty, however, the situation becomes far more complicated and expensive.
Let’s consider a practical example. Suppose you own a 75-inch Samsung Q70B and need to replace the screen without warranty coverage. First, you would likely spend around $50 to transport the large TV to a service center. Proper packaging is required; if you no longer have the original box, you may need to purchase or create suitable packaging, which could cost about $20. The replacement screen itself may cost approximately $700. Labor for the replacement could add another $350. After repairs, delivery back to your home might cost an additional $50.
In total, the repair could amount to roughly $1,150. Meanwhile, a brand-new comparable 2025 TV may cost around $1,200. On top of that, you may also pay $50–$70 for diagnostic services before the repair even begins, and the entire process could take up to a month. When all factors are considered, replacing a broken TV screen outside of warranty coverage is usually not financially reasonable compared to purchasing a new television.
Can You Fix a TV Screen with Lines?
Lines on a TV screen are a relatively common issue with both LED and OLED televisions. They may appear vertically or horizontally and usually indicate a problem with pixel scanning. When the vertical or horizontal control of the pixels fails, the image is displayed incorrectly. In LED TVs, this often causes pixels to freeze or fail to open properly. In OLED TVs, the effect is similar, but since each pixel emits its own light, the affected pixels may remain constantly lit or completely off.
In most cases, the cause is a malfunction of the display control board (T-Con or similar board responsible for panel control). When this happens, the lines are typically white or colored. Less frequently, the issue lies within the panel itself — for example, a break in the internal control circuit. In such situations, the lines are usually black because the pixels in that area are no longer functioning at all.
There are a few possible approaches to addressing this issue. One option is to disassemble the TV and inspect the ribbon cables connecting the control board to the display. In some cases, carefully cleaning the contacts with isopropyl alcohol may restore proper connection. Another solution is to replace the display control board entirely.
There is also a more technical workaround that may reduce the visibility of the problem, though it rarely eliminates it completely. This method only applies if multiple lines appear clustered in one specific area. Sometimes a single faulty scanning line can interfere with neighboring lines. By carefully isolating and disconnecting individual contacts within the ribbon cable — often using small pieces of tape — it may be possible to disable the defective line. If successful, only one narrow line will remain on the screen while the surrounding area functions normally. However, this is a delicate and temporary solution rather than a true repair.
As for repairing the panel itself, the possibilities depend on the type of TV. An LED panel can only be repaired if the issue is related to the backlight. In such cases, it is technically possible to disassemble the display and replace the LED strips (for Direct LED models) or backlight strips (for Edge-lit models). However, this is a complex process that requires professional skills, proper tools, and a very large, clean workspace. For example, servicing a 75-inch screen requires a table large enough to support the entire panel without bending it. The display must be disassembled carefully to avoid damaging fragile ribbon cables or the panel layers. This is not a job for one person — large screens typically require at least two people to handle safely.
OLED panels, on the other hand, are not repairable. They do not use a backlight and consist of an extremely thin, delicate structure. If an OLED TV develops display lines, the first step is to determine whether the problem lies in the control board or in the panel itself. If the control board is defective, replacing it may solve the issue. However, if the OLED panel is damaged, it cannot be repaired, and replacing the entire TV is usually the only practical solution.
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