Guys, today in this article, I’m going to provide you some vital ideas for fixing LCD LED TV Repairing. This material will assist you as you learn how to fix LCD LEDs and as you practice in the field. This knowledge can also be used as a concealed LCD LED repair technique.
Although this is not a comprehensive essay on LCD TV repair, I hope it will assist readers in understanding the primary functions of the crucial boards present in LCD TVs in some respects. Let’s get this party started.
In our everyday lives, television is a very personal item. It not only entertains and informs us about what is going on in the world, but it also helps bring families from different houses together by allowing us to binge on our favorite movies and TV series. Despite the fact that we live in the age of mobile devices, there are still enough individuals who prefer television over mobile. When your cherished TV screen cracks, it’s understandably scary.
A cracked TV screen, on the other hand, is a rare occurrence. However, if this occurs, no random mechanic should be tasked with mending it. Instead, only those who are completely familiar with the work should be enlisted.
- Power Board
- T-con Board
- EMI Filter board (In other designs this board is built into the Power Board)
- Inverter Board (In some designs this board is built into the Power board and is called as I/P board)
- Side Key Panel/Power Control/Remote Receiver Unit (IR/LED control)
- Left Speaker
- Right Speaker
- LCD panel
- LVDS cable
The LCD TV section’s function
Power Board: Inside the LCD TV, the Power Supply Board is generally the largest and heaviest board. Some repair technicians refer to the power supply board as a “Power Supply Unit,” “Power Supply Module,” or simply “PSU.” It transforms the main AC supply into DC voltages that the LCD TV’s circuit may utilize.
The power board and the inverter board are also referred to as the I/P board. No power, low power, power flicker, and intermittent no power are all common problems.
Timing Controller Board (T-Con Board): The T-Con Board is the tiniest board within an LCD TV, and it’s generally found solely in LCD TVs. The T-con board’s job is to regulate the gate and source logic signals that drive the TFT LCD. The T-Con Board is also known by various names, including the “Controller Board” and “Control Board.”
White display, no display, double image, and display distortion are all common issues (black and white vertical bars on the screen). Several vertical and horizontal lines may be seen throughout the screen.
Inverter Board: Inverter boards are exclusively present in LCDs and are generally located around the edges closest to the TV panel. The purpose of these boards is to convert the low voltage DC supplied by the SMPS (12V or 24 V) into a high AC voltage (500 to 1500 Vrms) to power the backlights. These boards are available as a single board or as an I/P board that is integrated with the power board.
The display shuts off after a few seconds, and the display is dim.
Looking for the circuit board with the audio and video inputs and outputs is the simplest method to locate the Main Board. Motherboard, Main Unit, Digital board, Scaler board, A/V board, Main Module, Logic board, or even A/D board are all terms used to describe the mainboard. The role is to take in visual and audio inputs and convert them to digital signals that may be transmitted to the T-con board through the LVDS IC (low voltage differential signaling).
Note: The audio section/RF Input/Rear Inputs may be detached from the mainboard on occasion.
Common defects include no display, no color, a screen full of vertical lines after a while, no sound, horizontal lines, and block. The LCD TV fault (typically a display problem) can also be caused by a software issue, in which case you must update the program.
Jackpack: The audio signal is sent to an audio processor, which then sends it to an audio amplifier, which drives the left and right speakers.
Note: The audio section/RF Input/Rear Inputs is sometimes termed a Jackpack or Signals Receiving Board since it is isolated from the mainboard (as seen in the above photo).
Poor sound, distorted sound, high-pitched whining, no TV reception, inability to adjust to particular blocks of channels, stations changing at random are all common problems. The all-in-one mainboard (Key Panel, Audio, RF input, Rear Inputs, Ram, and the main MCU) is shown below.
Liquid crystal display (LCD) is a tiny, flat electronic visual display that takes advantage of liquid crystals’ light modulating capabilities (LCs). Because LCs do not emit light directly, backlighting is required to make LCD screens visible.
Vertical/horizontal narrow line/s or bar, white display, trash display are all common faults.
BackLights: Backlights (CCFL or EEFL) are used to illuminate the LCD from behind the display panel. Display shut down after a few seconds and display flickering is a common problem.
This is the most common issue we see with LCD LED TVs. I’ve previously written a number of articles regarding the LCD LED TV Repairing Panel issue and the repair method. If you want to understand more about All LCD LED Panel Issues, go to this page and start studying. Also, see my panel-repair content below.
What To Do If Your TV Screen Is Broken?
There are many different varieties of TV screens, so providing as much information as possible to your repair provider will help them perform the work quickly and successfully. The TV manufacturer and kinds of TV — such as LED, LCD, 3D, or flat-screen — are quite useful to the specialist performing the repair.
It’s usually easier to have someone come to you to fix or remove the screen. Repair shops are few, and television is a bulky item to move.
To begin, let’s consider how TV screens can break. There are a plethora of causes for this. The majority of the time, it is harmed by accident. Your youngster kicks or hits a ball that, regrettably, falls in the middle of the television! Alternatively, the television, perched dangerously on the edge of a table, topples over and cracks! Therefore, It’s also possible that you’ll drop it when moving or installing it. As a result, it’s best to keep your TV out of reach of children, and you shouldn’t let them play with balls in that room. Its installation and transportation (from one location to another) should also be flawless, preferably with the assistance of skilled specialists.
What Should You Do If You’ve Been Injured?
The next question is, what happens if your TV screen cracks? Is it the end of the tale (as some internet sites appear to suggest) or can it still be properly repaired? When a TV screen cracks, the severity of the damage varies, and you may be dealing with anything from a fully dead screen to tiny lines in the picture, as well as no picture, no sound, and poor picture quality.
Before you give up hope, take a deep breath and assess the damage, as well as the choices available to you.
Check Your TV Warranty
One thing you might do here is getting out the paperwork and see whether the TV is still under warranty. If this is the case, all you have to do now is take the television to an approved service center (Please, make sure to contact the guys only at an authorized service center to get genuine services). Most likely, you will receive a free repair, a compensated repair, or a replacement (depending on the cause of the damage and the sub-clauses in your TV manufacturer’s/warranty supplier’s contract).
Get a Professional, Authorized Repair
The best way to bring your TV back to life is to take it to a professional, authorized service shop. If you notice a problem with your Synix TV screen, go to your local Carlcare service facility right once. Our qualified TV experts will inspect it thoroughly and provide a detailed description of the damage, as well as a cost-effective repair. We are experts in repairing damaged TV screens from a variety of manufacturers. If your TV was not purchased recently and the warranty term has expired, we will provide you with the best repair at the best price, as well as genuine and competent advice from our specialists.
What To Do If Your 3D TV Screen Is Broken?
A damaged 3D TV screen generally costs approximately $100 to repair, although certain professionals may charge more or less. The TV set’s manufacturer has a significant impact on the cost of screen repair. Repair expenses for 3D and 4K TVs are likely to be the most expensive, while a plain LED screen would cost a bit less.
What To Do If Your LED TV Screen Is Broken?
Because LCD LED TV Repairing screens are so delicate, they are the most popular form of TV repair. Cracks and damaged TV screen pranks are most common in busy households with small children, but they may happen to anybody. Although most manufacturers make the models so that they don’t shatter, it’s still critical that you have it serviced as soon as possible because it might still be a safety concern.
You’ll be disappointed if you’re wondering how to mend a broken TV screen at home. It’s a large task that needs specialized knowledge. You can do certain basic repairs on your own, but fixing a broken flat-screen TV screen is not one of them.
How to Repair a Flat-Screen TV’s Screen?
Although repairing a flat-screen TV is generally less expensive than repairing a curved screen, it is still a big undertaking. If the fracture or chip is little, the expert may be able to fix the TV at your home that day. But if the damage is more serious, they may need to transport it to a repair shop.
Calling or emailing a professional and getting an estimate for the service is the best method to get your flat screen TV fixed. Because it necessitates a high degree of electrical expertise. It’s not a job that most individuals can tackle on their own. Keep in mind that if you have a smaller flat-screen TV. A new model may cost the same as or even less than your old one. Flat-screen TV repair, on the other hand, is definitely the most cost-effective option if your TV is larger than 50 inches.
How to Replace a Bulb in a Flat-Screen Television?
It might be inconvenient to have a bulb on your LCD LED TV Repairing blow out, but anyone who is experienced with DIY should be able to fix it. The light may need to be ordered from the manufacturer or located online, but other than that, all you’ll need is a screwdriver. If you need to replace a bulb in your flat-screen TV, follow these steps:
- Remove the TV from its stand and place it flat on the table with the back facing up. Make sure you’re especially cautious when it comes to
- Remove the panel from the rear with a screwdriver and set it aside. Make a safe place for the screws so they don’t get lost.
- Remove the burned-out light from the fixture by lifting the tiny metal handle.
- Place the replacement light gently into the fixture, making sure the little metal handle is visible. Replace the panel and gently put the TV in its original location.
How to Repair Lines on a Flat Screen TV?
If you can see the dreaded flat-screen TV lines across the front of your favorite show. Your screen is probably damaged. Even though the fractures are little and difficult to detect once. You see colorful vertical lines in front of you, there’s no going back.
What Is The Best Way To Replace A Samsung LCD TV Screen?
A 55-inch Samsung TV screen replacement costs around $160. Although this varies depending on the contractor. The most reasonable approach is to hire an engineer. Who has specific expertise in Samsung LCD panels, but this will likely cost a bit more than a generic professional.
Given that purchasing a new big TV is much more expensive than having the screen replaced. There’s no incentive to purchase a new set if the problem is only a cracked screen.
Get in contact with a local specialist that can complete the task. If you need a TV repair contractor to mend a cracked or damaged screen!
Tips for dead LCD LED TV Repairing or LED television
If your LCD LED TV develops a dead TV fault, follow the instructions below to resolve the issue.
The first step is to inspect the power cord for any signs of leaking. Simply replace the power cable. If there is any leakage or damage to the cable, and your TV will be repaired.
The Power Supply Unit must then be checked in the second step. Because 90 percent of the time when we fix a dead LCD LED TV Repairing. The problem is caused by a power supply failure. If you want to learn how to fix an LCD LED TV power supply, go here and learn the method. If you obtain a good and functional power supply after inspecting the PSU, go to the next step.
The third and last step is to inspect the main motherboard after checking the power supply unit. You must provide external power according to the motherboard voltage for primary motherboard testing. If your motherboard requires 12 volts to operate, simply provide it with 12 volts. If your motherboard is in good working order, it will switch on; otherwise, there will be no reaction.
Golden Tips for LCD LED TV Repair: In my three years of fixing expertise, power supply failure was the cause of 90% of dead TV problems. So make sure the power supply is in good working order, or replace it with a new one.
The Procedure for Installing Software
This isn’t a problem with the hardware. It’s a bug in the program. We will face several issues as a result of software failure. Stuck in the boot, hanging issue, slow issue, picture matching issue, and so on.