There are many types of TVs and each TV requires different type of repair. TV repair service centres faces different Types of problem in daily life. Service centers have experienced TV technician who know how to fix the problem. Here we are going to discuss some common TV repair problems come in TV Repair Service Center.
1. Back light is shown in LCD TVs but no picture is shown.
2. LCD TVs turn off but led lights continuously blinking.
3. TV do not show any image. It could be due to damaged IC's on buffer board or bad y-sustain board.
4. Horizontal and verticals lines shown in TV.
6. Some Times TV parts have some burn holes, smell like burning, cracks on outside parts. This could be a major issue but sometimes it is only due to burning of flux, When device heats, flux melts.
7. Damaged or Broken TV Screens.
When TV Screen is damaged or broken then first question arise in our mind is that broken TV screen could be repaired or not.
Precautions: If you are trying to repair your TV at home always remember to wear gloves that decreases the risk of Electric shock. But mainly you have to go to TV repair service centre for repairing your TV. Because they know what is the exact problem and how to fix it. And second thing is they have all the necessary part available. You can call your TV technician at your home for their advise.
Problems that really ask for TV Repair:
In today’s market, LCD’s and LED’s are the most common available Television segment. Thus in this topic we will consider LCD & LED. Where we will discuss about problem’s which need TV Repair service. And their estimated solutions. Here, we will provide information based on surveys and research. Actual solution may vary much.
Back-light Issue: The most common and happening
problem of LED’s these days. In this issue, the back-lighting operation
of LED TV doesn’t work properly. It tends to make several screen and
display issue. Its quite common in every LED screens these days. And
usual to repair as well. But the reasons are not that common, the
problem may occur for many reasons. Sometimes due to mishandling, due to
electric fluctuation, rebooting frequently and many more like led overdriving to obtain high light levels, bad hardware design and poor engieering and manufacturing......... But the
symptoms stay same.
PCB MAINBOARD (Printed Circuit Board): PCB is basically known as
Main Board of Television. In other words, it is Mother board of any
Television set. It controls complete functionality of Television. It is
programmed in order to control total supply of input & output. It is
of video, audio, VGA, graphics, color, multimedia, processing, cooling,
connectivity, power, software operation, networking & core memory.
Hence, it is main system operator of any Television. Thus any problem
related to input & output of above mentioned operations. Directly
relate of PCB failure. Which implies it is either dead or irrationally
got shot by circuit media.
SMPS ( Switch Mode Power Supply):Commonly known as power supply and Inverter board. SMPS is an electronic power
supply that incorporates a switching regulator, In order to convert
electrical power efficiently & effectively. Like other power
supplies, an SMPS transfers power from a DC or AC source (often mains
power) to DC loads. Much like as in a personal computer, while
converting voltage and current structure. Unlike a linear power supply.
The pass transistor of a switching-mode supply continually switches
between low-dissipation. Full-on and full-off states. And wastes very
little time in the high dissipation transitions. Which reduce wasted
energy. SMPS failure directly turns the Television into dead mode. No
power supply, hence it doesn’t even turn on.
T-Con Board :- T-Con board refers to timing control
board. It basically does all video controlling operations. This board
controls whole functionality of display screen. It converts video
electric signal from lvds Mainboard PCB to display module language. Which display
back-lit system understands & behaves as directed. Back-lit
operations are directly supported & coordinated by T-Con Board
itself. Hence, if anything goes wrong with display picture portion.
Backlight area & screening portion. It points that there might be
any T-Con board failure !
The LCD Display Panel :Flat-panel displays are electronic screening system. Used to enable people to see contents with still images, moving images, text, or other visual material. With quality in a range of varieties of shapes and sizes. They are far lighter and thinner than traditional cathode ray tube (CRT) television sets. And video displays and are usually less than 10 centimetres (3.9 in) thick. They came up in order from Ordinary, HD Ready, Full HD, Ultra HD (4K), Curve OLED and 3D. Any problem related to display screen misbehavior. Is directly associated with display panel. But may or may not be associated with T-Con board.
Sensors Issue : Sensor is basically known as the infrared adapter. Which controls wireless connectivity with remote. It functions as a controlling body. Which receives digital wireless signals from remote & performs as directed. It actually controls all basic features. Which are present in remote. Thus, any malfunction in sensor board, makes TV go crazy. Audio, input, channel router, buttons, video and everything starts misbehaving.
Button Faults :Button’s are usually a included control segment of Television. It have some basic units of control, like power,volume,channel,input & enter. It usually works with a small circuit board. Connected via sensor board. But sometimes buttons got pressed or damaged. Its a common fault caused by mishandling.
LCD Panel Broken :Flat panels are the most vital part of Television & most sensitive too. They are the display screens which allows you to view motion pictures into it. It costs 80% of total value of Television.
Software / Firmare Issue :Software represents operating system of Television. Like, Windows or LINUX in Computers. There are several software developed by manufacturing companies. Which is stored in Master IC of PCB Board. It allows you to operate complete Television function. Sometimes due to external bleach or virus, it got damage. At that point, software issue comes. It start misbehaving, flickering and stand-by, by default.Many if not all Tv are using a LINUX Kernel !
Solutions for TV Repair:
Back-light issue : Backlight issue can be repaired by replacing the back-lit LED strip set. When an back-lit issue encounter’s, it direct tend to fuse back-lit LED bulbs. Thus the first and foremost step is to replace back-lit strips connected with LED bulbs. After that, we need to inspect what is the reason behind this back-lit failure. The most happening reason used to be, T-Con Board malfunction or rapid wear of leds due to poor engineering and manufacturing or even misuse of hi bright. If its a T-Con board problem, then companies recommends to change T-Con board. Otherwise, it may effect Display panel. Thus, basically complete back-light issue solution is to replace T-Con board and LED strips at the same time.
PCB / MAINBOARD Issue (Printed Circuit Board):PCB refers to Main Controller Board or Motherboard technically. Thus any problem occurred in PCB can turn a complete Television into disaster. PCB’s comprises of many micro components. And every component is designed & programmed to do different job’s. If any one component from PCB becomes isolated, it may effect the complete functionality. And as per company directions, PCB always recommended to replace. As and when encountered any issue. Otherwise, it can generate opposite power supply. Which can damage whole Television. Hence, its preferred to replace PCB every-time.
SMPS POWER SUPPLY Issue ( Switch Mode Power Supply):SMPS regulates main power supply system in a programmed way. But sometimes, due to electric fluctuation. High voltage supply & home electric supply malfunction. SMPS used to break down. And there are three ways of breaking down. The first one is, due to limited high power supply, fuse become detached. Here, changing of fuse can recover SMPS easily. Second way is where, due to abnormal power supply. Some SMPS components get shot. Here, changing of those components can recover SMPS again. The most worst case is when, due to high un-grounded lighting direct power supply. SMPS get burned. In this case, complete SMPS board need to be changed. And at the same time it might have harmed PCB / MAIN too. Its complete unpredictable.
T-Con Board Issue : T-Con board operates complete back-lighting system in order to quality screening performance. It used to be connected with panel X-Boards. T-Con Board issue basically happens along with back-lit breakdowns or from X-board failure. T-Con board is also a printed circuit board. Thus it is not recommended to be repaired. Hence, it’s need to be replaced for safety of display panel. And continuity of viewing quality.
Display Panel Issue :Panel is the screening system. Thus it is the most dedicated part of any Television set. Display panel acquires 80% value of the total TV. And honestly saying, no company repair display panels. According to recommended directions by LED TV Panel Repair. Display panels should not be repaired. Hence it hikes up television sale, once it is in need of repairs. Even we were not into display panel repairs before. But we started doing this after heavy request from customers. Display panels may damaged from many ways, but only few of them are repairable. Anyway it can be repaired. But it need to pass from bonding process then X-boards need to be replaced. By doing this, display panels can be repaired. But excluding water damage.
Sensors Issue : We have discussed before, sensor plays a very vital role in Television functionality. But in case of sensor malfunction. It can be repaired easily. By simply changing some defective components in sensor board. But recommended, TV remote should also be changed with sensor board.
Button Faults :Buttons have the key role in operation of any Television. Thus it need to be in working condition anytime. Thus, in case buttons are damaged & need repairs. Yes, it is possible and in very simple way. Just by replacing button panel which is connected with sensor board. In case due to button faults sensor board is damaged. Then it can also be replaced along with that.
LCD Panel Broken : Display panel is the most vital & dedicated part of any Television. As we have discussed before. Its quite difficult to repair display panels. And even not recommended by manufacturers. But as it holds 80% of total value. Thus fix some possible display repair requirements. But in case display panel is broken. Trust me there is no other option of fixing it up. You can better go for new TV instead. As suggested by TV Panel Repair.
