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During the Covid-19 outbreak, we were cooling off at home and watching TV. In the middle of a great episode of “Say Yes to Clothes” on TLC, the screen suddenly faded to black. After a while, vertical stripes appeared.
My first reaction was “wtf, that must be a problem”, so changing channels and turning the TV on and off sure helps, right? It did not work. What I learned is that the TV always responds to the remote control and there is always sound! But yes.. let’s do the troubleshooting, the first step is to read the manual! Luckily we kept it, but that didn’t really help when playing, you get the normal soft/hard settings and that’s it. When I emailed Sony and the vendor where we got the TV from under warranty, I went to Google to find some helpful stuff. Some people with the same problem still talk about the T-con board. So I started looking for the T-con board. I realized that the TV is nothing but a screen and some chips that control the screen. The T-con board appears to display the pixels on the screen. Since the radio and TV still respond to the remote, it’s actually a chip that seems dead.
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During this time I received a response from Sony and the supplier. Sony just asked me to do more troubleshooting and the vendor said they couldn’t do anything since the warranty had expired. The purchase of this television will still turn around 500 Euros .. but there I got it … I am a computer engineer! I can do it myself! So I started removing the back cover of the TV.
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I have a screwdriver, gloves and good mental focus. I saw that the T-CON board should be below the main board. No problem, I just made myself this picture to know which cable goes where. In the end, it wasn’t even necessary because the maps aren’t complicated at all. I found the T-CON board and checked it out with my own eyes.. not a strange thing but good.. I will order a new one! Typed the code into interwebz and found a few sites that offer TV parts. Even located in the Netherlands…great!
After a few days I received my new T-CON card and put it in the TV. I was very happy to turn on my television to see if it was working. But nothing .. The LED on the TV constantly flashes only green and orange. I turned off the TV and signed back into Google, it seemed to mean the TV was updating and you shouldn’t turn off the TV! A few hours later and to no avail, he blinked. Finally, I read in a forum that you can download it from Sony’s site, update the OS, put it on a formatted USB and connect it to the TV. I did the same and fell asleep because updating can take a while. The next morning I went to the television and turned it on. The most beautiful light reflected in my eyes, it worked! I became so happy! The new T-CON card was €50 so we saved over €400!
The lesson here is that even if you know nothing about anything, you can achieve “everything” with a little sacrifice! Guys, in this article today, I am going to present some vital ideas for repairing LCD TVs. . This article will help you learn how to repair LCD LEDs and practice in this field. This knowledge can also be used as a technique to repair hidden LCD LEDs.
Although this is not a complete article on LCD TV repair, I hope it helps readers understand in some way the basic function of LCD TV vital boards. Let’s get the party started.
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In our daily lives, television is a very personal object. It not only entertains and informs us about what is happening in the world, but also helps us bring families from different homes together and allows us to watch movies and series. Boost your favorite TV shows. Despite the fact that we live in the era of mobile devices, there are still many people who prefer television to mobile. When your beloved TV screen cracks, it’s understandably scary.
In contrast, breaking a television screen is a rare event. However, if this happens, no random mechanic should be tasked with fixing it. Instead, only those who are fully familiar with the job should register.
Power board: Inside the LCD TV, the power board is usually the largest and heaviest board. Some repair technicians refer to the power board as a “power supply”, “power module”, or simply “PSU”. It converts the main AC power to DC voltages that the LCD TV circuit can use.
The power card and the inverter card are also called I/P cards. No power, low power, flickering, and intermittent power are all common issues.
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T-Con board: The T-Con board is the smallest board on an LCD TV and is usually only found on LCD TVs. The function of the T-con board is to regulate the gate and source logic signals that drive the TFT LCD. The T-Con board is also known by different names, including “Controller Board” and “Control Board”.
White screen, no display, double image and display distortion are all common issues (black and white vertical bars on the screen). Several vertical and horizontal lines can be seen on the page.
Inverter Board: Inverter boards are found exclusively on LCD screens and are usually located at the edges near the TV panel. The purpose of these boards is to convert the low DC voltage supplied by SMPS (12V or 24V) into high AC voltage (500 to 1500 Vrms) for the backlight power supply. These cards are available as a simple card or as an I/P card which is integrated into the power card.
Finding a circuit board with audio and video inputs and outputs is the easiest way to locate the main board. Motherboard, main unit, digital board, scalar board, A/V board, main module, logic board or A/D board are all terms used to describe the main board. The role is to receive visual and audio inputs and convert them into digital signals which can be transmitted to the T-con board via the LVDS (Low Voltage Differential Signaling) integrated circuit.
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Common faults include: no display, no color, page full of vertical lines after a while, no sound, horizontal lines and blocks. The LCD TV error (usually a display problem) can also be caused by a software problem, in which case you need to update the program.
Jackpack: An audio signal is sent to an audio processor, then sent to an amplifier which drives the left and right speakers.
Note: The audio/RF input/rear inputs section is sometimes referred to as the jackpot or signal board because it is detached from the home screen (as shown in the image above).
Poor sound, abnormal sound, loud moaning, no TV reception, inability to set specific channels, changing stations randomly are all common problems. The general-purpose motherboard (keyboard, audio, RF input, rear inputs, RAM and main MCU) is shown below.
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Liquid crystal display (LCD) is a small, flat electronic visual display that uses the light-tuning capabilities of liquid crystals (LC). Since LCs do not emit light directly, a backlight is needed to make the LCD screen visible.
Backlight: The backlight (CCFL or EEFL) is used to light up the LCD screen from the back of the screen. The screen turns off after a few seconds and screen flickering is a common problem.
This is the most common problem we see in LED LCD TVs. I have already written a number of articles on the topic of LED LCD TV repair panel and repair method. If you want to know more about all LED LCD panel problems, head over to this page and start reading. Also see my panel repair content below.
There are several types of TV screens, so providing as much information as possible to the repairman will help them get the job done quickly and successfully. The manufacturer of the television and all types of televisions – such as LED, LCD, 3D or flat screen – is very useful for the specialist who performs the repair.
How To: Fix A Cracked Or Damaged Lcd/led Tv
It’s usually easier for someone to come to you to fix or remove the page. Repair shops are few and the television is a cumbersome commodity to move.
To begin, let’s consider how television screens can break. There are several reasons for this. Most of the time, it is damaged by an accident. Your young man hits a ball that unfortunately falls in the middle of the TV! On the other hand, the TV, which is dangerously on the edge of a table, overturns and explodes! Therefore, it is also possible to drop it when moving or installing it. Therefore, it is best to keep your TV out of the reach of children and not let them play with it.
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