TV Repair Service

TV Repair Service in Bangalore:

TV Repair Service : We will first talk about LCD TV Specification:

TV Repair Service : Liquid-crystal-display televisions (LCD TV) are televisions that use LCD to produce images. LCD televisions use to be thinner and lighter than cathode ray tube (CRTs) of similar display size, and are available in much larger sizes. When manufacturing costs fell, this combination of features made LCD’s practical for television receivers.

First Thin LCD Panel TV by Sony Bravia:

In 2007, LCD televisions surpassed sales of CRT televisions worldwide for the very first time, and their sales relative to other technologies are increasing. LCD TV’s are rapidly displacing the only major competitors in the large-screen market, the plasma display panel and rear-projection television. LCD’s are, by far, the most widely produced and sold television display type.

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TV Repair Service

LCD Mechanism basically used for TV Repair Service:

TV Repair Service : A typical shutter assembly consists of a sandwich of several layers deposited on two thin layer of glass sheets forming the front and rear of display. For smaller display sizes (under 30 inches (760 mm)), the glass sheets can be replaced with plastic, in order to TV Repair’s.

The rear sheet starts with a polarizing film, the glass sheet, the active matrix components and addressing electrodes, and then the director. The front sheet is similar, but lacks the active matrix components, replacing those with the patterned color filters. Using a multi-step construction process, both plates can be produced on the same assembly line. The liquid crystal is placed between the two sheets in a patterned plastic sheet that divides the liquid into individual shutters and keeps the sheets at a precise distance from each other.

The vital step in the manufacturing process is to deposition of the active matrix components. These have a relatively high failure rate, which renders those pixels on the screen “always on”. If there are enough broken pixels, the screen has to be trashed. The number of discarded panels has a strong effect on the price of the resulting television sets, and the major downward fall in pricing between 2006 and 2008 was due mostly to improved processes.

To produce a complete television, the shutter assembly is combined with control electronics and backlight. The backlight for small sets can be provided by a single lamp using a diffuser or frosted mirror to spread out the light, but for larger displays a single lamp is not bright enough and the rear surface is instead covered with a number of separate lamps. Achieving even lighting over the front of an entire display remains a challenge, and bright and dark spots are not uncommon.

TV Repair Service

TV Repair Service: LCD TV Power Efficiency

TV Repair Service : LCD’s are relatively not efficient in terms of power use per screen size, because the basic majority of light that is being produced at the rear of the display got hided before it reaches the viewer. To start with, the rear polarizer filters out over half of the original un-polarized light. Testing the image above, you can see that a well area of the display area is covered by the cell structure around the shutters, which removes the other portion. After that, each sub-pixel’s color filter removes the maximum of what is left to leave only the desired color. Finally, to control the color and luminance of a pixel of the complete, some light is reduced when passing the front polarizer in the on-state by the imperfect operation of the shutters.

For these reasons the back-lit operation has to be extremely powerful. In spite of using highly efficient CCFLs, most sets use several hundred watts of power, more than would be required to light an whole house with the same function. As a result, LCD TV’s using CCFLs end up with overall power usage similar to a CRT of the same size. Using the same examples, the KV-40XBR800 dissipates 245 W, while the LC-42D65 dissipates 235 W. Plasma screen’s are worse; the best are on par with LCDs, but typical makes draw much more.

Modern LCD’s sets have attempted to portion the power use through a system known as “dynamic lighting” (originally known for other reasons, see below). This process examines the image to find portions that are darker, and reduces the back-lighting in those portions. CCFLs are long cylinders that run the height of the screen, so this change can only be used to control the brightness of the display in complete, or at least long horizontal bands of it. This makes the system suitable only for several types of images, like the credits at the end of a movie. In 2009 some industries made several TVs using HCFL (more power efficient than CCFL). Sets using distributed LEDs behind the display, with each LED lighting only a little figure of pixels, typically a 16 by 16 patch, allow for better local dimming by dynamically focusing the brightness of much smaller areas, which is suitable for a much wider set of images.

Other ongoing portion of research is to use objects that optically route light in order to re-use as much of the signal as needed. One area improvement is to use microprisms or dichromic mirrors to separate the light into R, G and B, instead of absorbing the unnecessary colors in a capacitor. A successful technique would improve efficiency by three times. Another would be to direct the light that would basically fall on opaque elements back into the transparent area of the shutters.

Several newer systems, OLED, FED and SED, have less power use as one of their primary pro’s. All of these technologies directly produce light on a sub-pixel basis, and use only reduced power as that light level requires. Sony has demonstrated 36″ FED units screening very bright images drawing only 14 W, less than 1/10 as much as a similarly sized LCD. OLED’s and SED’s are similar to FEDs in power terms. The reduced power allocation make these technologies particularly similar in low-power uses like laptop computers and mobile phones. These sorts of devices were the market that originally replaced LCD technology, due to its light weight and thinness.

TV Repair Service : Making a booking with us

Simply fill the booking form in order to avail TV Repair Service, appearing in your sidebar of desktop or in bottom of your mobile. Once you fill it, you will get a call back from our technical team. Confirm your booking timings with them. After that, our service executive will be there at your doorstep, at your suggested time & date.

They will inspect your TV completely. And educate you about its problem. Once you avail the service, our executives will repair it there itself. If in case it’s a major issue & need parts replacement, our executives will carry your TV at our nearest service center & deliver it back with complete repair’s within 48 hours.

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That is how, RepairTv works for TV Repair Service

 

 

LED TV Repair

LED TV REPAIR

LED Television is a flat panel display which use LED backlighting instead of the cold cathode fluorescent (CCFL) back-lighting. LED television use the same TFT LCD (thin-film-transistor liquid-crystal display) technologies as CCFL-back-lit displays, but offer reduced energy consumption, better contrast and brightness, greater color range (using more expensive RGB LED’s, blue LED’s with RG phosphors, or quantum dot enhancement film (QDEF), more rapid response to changes in scene (with dynamic backlight dimming), and photorefractive effects. Led tv repair is most likely easy because of availability of components. As it is a new technology, so most manufacturer’s supply spare parts quickly & easily. 

A television using such a combination of an LED back-light with an LCD panel is called an LED Tv.

Led Tv Repair

 

 

 

 

 

 

Led Television Technology

TV Repair Service : LED-back-lit LCD’s are not self-illuminating . There are several ways of back-lighting an LCD panel using LED’s, including the use of either white or RGB (Red, Green, and Blue) LED arrays behind the panel and edge-LED lighting. Variations in LED back-lighting offer different benefits. This was possible because red, green and blue LED’s have sharp spectral peaks which (combined with the LCD panel filters) result in significantly less bleed-through to adjacent color channels. Unwanted bleed-through channels do not “whiten” the desired color as much, resulting in a larger gamut. RGB LED technology continues to be used on Sony BRAVIA LCD models. LED back-lighting using white LED’s produces a broader spectrum source feeding the individual LCD panel filters (similar to CCFL sources), resulting in a more limited display gamut than RGB LED’s at lower cost.

Other technology is as same as LCD-Televisions which includes several PCB’s (Printed Circuit Board), SMPS (Power Supply Board), Back-lit Board (Controls Back-lit Function) and few more.

 LED Television Repair’s

TV Repair Service : It completely depends upon the damage & reason behind it. It need to be diagnosed properly with multi-meter. And after diagnosis, actual problem will be discovered. Once the problem is detected, then it can be repaired easily. In case of any parts replacement, availability of parts need to be checked. If available, our team will provide parts to customer on demand.

Our certified technicians diagnose television on service thoroughly & reveal the actual problem on it. In case of minor repair’s, our technicians repair it there itself. In case of major repair’s, our technician carry television to our nearest service center & redeliver it within 48 hour’s. That is how RepairTv works.

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