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My Sony LCD model no CX52 There r white patches and background images are not visible Screen is full of pathes what to do

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The LCD television is a flat-panel television which utilizes a Liquid Crystal Display technology. It has two layers of glass which are polarized and stuck together. The liquid crystals are held in one of the layers. These liquid crystals pass, or block the light, to produce images on the screen when the electric current passes through it.

However, the crystals do not produce their own light. The light comes from the series of fluorescent lamps at the back of the screen. There are millions of shutters arranged in a grid, which open and close to release and trap some of the light that is not needed to create images. Then each shutter is paired with a colored filter which produces a sub-pixel. These are so small, that when they combine, they create a single pixel, which appears to be a single spot of color on the screen. With the help of the fluorescent lamps, the images created by the liquid crystals become visible to the viewer.

LCD television produces high image quality. They can be made very thin, which makes them less space-consuming, and the user can hang them anywhere. This makes them appealing to buyers.

LED TV's are actually very much like LCD TV's. They also have a flat-screen which utilizes Liquid Crystal Display technology. The only difference is their source of light, which is at the back of the screen. The LCD TV uses fluorescent lamps, and the LED TV uses LED (Light Emitting Diodes).

There are two types of LED backlighting. One is referred to as Edge lighting, and the other is called Full-Array lighting. With the Edge lighting, the series of diodes are arranged along the outside edges of the screen. When there is power, the light is distributed across the screen. Alternatively, in Full-Array lighting, there are several rows of diodes behind the entire surface of the screen. They provide more control over brightness and dimming, because the diodes can be turned on and off independently.



LED TV's are LCD TV's with a new backlight system. They are newly developed for LCD's, because Light Emitting Diodes are said to give more balance in color saturation, and use less power than the fluorescent lamps. LED TV's are the newest version, and that's why they are currently more expensive than the standard LCD TV's.

Summary:

LED TV's are still LCD TV's. They are just considered to be the newer LCD TV version because of the new backlight system used. The LED TV uses Light Emitting Diodes, while the standard LCD TV uses fluorescent lamps. Although they both still use Liquid Crystal Display technology. The main difference is the part behind their screen, which is the backlight.


Read more: Difference Between LCD and LED Televisions ' Difference Between ' LCD vs LED Televisions http://www.differencebetween.net/object/difference-between-lcd-and-led-televisions/#ixzz2Bb0rIue6

Posted on Nov 08, 2012

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Posted on Jan 02, 2017

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melnavz
  • 1226 Answers

SOURCE: Dark horizontal lines on Sony KLV-26HG2 LCD TV screen

Hello,

If you can fix it by yourself, there is a problem in horizontal circuit panel, you need to check that in series because the part appear visbly good but when tested by the exact tester you register busted. that should be replaced immediately. Check also the vertical panel parts of the circuit. but if hard you do the job you may consult the service center of your TV or the vendor of the TV.

ps. please don't rate me if you are not convince of my suggestion.

best regards, melnavz

Posted on Apr 08, 2008

SOURCE: hisense[gva] modelPDP421 plasma

You most likely have image burn in on the display if it is not in a straight line. If it is in a straight line than it can be dead pixels. It is most likely the first issue I saw this same issue at work with an HP plasma TV.

Posted on May 10, 2008

  • 192 Answers

SOURCE: Flickering dots

The symptom you described is called diffusion. A simple alignment, normally in the power supply takes care of this problem. For the nearest Authorized Service Center near you contact Toshiba online at: http://webmail.tacp.com/service/servcntr.nsf/$$Search?OpenForm Hope this helps

Posted on Jun 03, 2007

  • 225 Answers

SOURCE: Screen shows blue patches on white also red lines on dark colour

Replace the video board, if you can find one. Letting it cool down will not help any.

Posted on Nov 14, 2008

  • 175 Answers

SOURCE: Purple blotch on screen

hi..This patch can be a result of your TV 's Auto Degaussing
Coil problem. Metallic parts of a TV gets magnetized and the
ADG coil demagnetizes them. At power on you should hear a
sound,which is the ADG coil.please check the ADG coil connector
it might have been pulled out. The ADG coil is wrapped around securely
on your TV's Picture tube and power is tapped directly from the AC
Main via a plug in type connector to the TV main circuit board.
check it out..
thank u..
rate me..

Posted on May 04, 2009

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