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What can cause the backlights of my LED TV to fade?

My display is fading in horizontal chunks that line up with where the LED strips of the TV should be. I've noticed the top left rectangle which was well lit has also faded within 24hours of first noticing the problem. Is it safe to assume replacing the LED strips will fix this or could it be a problem with some other part?

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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techman
  • 3130 Answers

SOURCE: Kenwood VR-605 display fading out

There is a cold solder connection on the display device, on the display driver board, or on or in the power supply that supplys the display voltage to the driver board. The only way you can repair it is if you have some soldering experience and or some electronic troubleshooting skills. If you go in and start poking around, and you poke at the wrong thing, It will smoke on you, as solid state electronics are very unforgiving when it comes to shorting out something, even if its for a blink of an eye!!! If you really like the unit, take it into a repair shop, as it should'nt cost to much to repair. If the units 3 to 6 years old, Maybe its time to think about upgrading to a newer unit??. Good Luck

Posted on Jul 30, 2006

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  • 1 Answer

SOURCE: Faded Black Strip on Side of Projection

I had a similar problem with my InFocus LP600 although my black stripe was straight up and down. I am guessing this is caused when the unit is bumped or dropped. This is not an easy fix unless you have a lot of experience with small tools and parts and you may need an extra set of hands. I found some tiny alignment screws under the lamp cover and hidden beneath a peel-off 0.5" x 2" black plastic strip. The screws are located between the bulb assembly and the main projection lens and are oriented 90 degrees apart around the light projection path. The trick is in getting the projector to temporarily function with the lamp cover off -- it has an interlock tab on one edge that pushes on a microswitch when closed. We turned the projector upside down but raised on some slats for heat dissipation, gently held the interlock switch in with a small screw driver, and plugged in the power cord. After pushing the power switch to get the image, I adjusted the tiny screw that is angled towards the front of the projector and the stripe dissapeared! Since your stripe is angled, you may need to adjust both alignment screws. The screw heads are very tiny torx bit types but I was able to use a 3/64" (.05") allen (hex) wrench that came in a set of cheap jewelers type tools that are widely available. Be very careful while operating the unit with the lamp cover off as there are very hot surfaces and exposed wiring.

Posted on Dec 05, 2007

  • 1 Answer

SOURCE: My Sharp Aquos

Why does my sharp Aquos TV go out of resolution everytime I turn off the Wii game that is hooked up to it? Then I can reload Optimum cablevision- all I get is the program guide. Help

Posted on Nov 21, 2008

  • 1 Answer

SOURCE: Samsung color fading-light on lft side to dark on rt side

i want to download the driver softwere of samsung clp-300 series vista ultimate supported

Posted on Jan 05, 2009

Medinajavier
  • 2 Answers

SOURCE: TI-85 Calculator's LCD Display if faded

I did a little research on the Texas Instruments Website  and here is the answer. 
Adjust the contrast by pressing and releasing the [2nd] key followed by pressing and releasing the up arrow; repeat as necessary. To adjust or lighten the display, use the down arrow. 
http://epsstore.ti.com/OA_HTML/csksxvm.jsp?nSetId=85103&nUsePub=NO&jttst0=6_23871,23871,-1,0,&jtfm0=&etfm1=&jfn=ZG57C2FA762C0BEC303F5B74A9018844AE124A5516274A019AFE22BA90B20

Posted on Jan 14, 2009

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Vizio tv power button will not stay lit fades and shuts down in about 10 seconds. No backlights no backlit screen. Vizio mod # e420i-ao. any ideas. trying to check voltages but don't know If I can.


In most of the case, the problem is defective LED back lights strips, the other problem could be a defective main board.

If you have a LED strip tester, check out the LED strip first, if you don't, try a new main board first, if the symptoms are the same, for sure, the problem is LED strip(s).

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Horizontal lines and black spot in corner of led tv


If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.

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Powers on, backlight comes on then power LED and backlight slowly fade and turns off after about 45 seconds.


Fault to its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

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Hi Isobel,

Not much information there...

iMacs tend to start displaying vertical lines, lie white faded strips as they age.. unfortunately, it's like iMac Alzheimers.. nothing to be done under $600

May 09, 2013 | Apple iMac Computers & Internet

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I have these faded lines running across the top one quarter of my insignia hdtv horizontally. under that the rest of tv is clear picture.it is a insignia 27 inch hdtv model number ( is-tv040927)


Horizontal lines like you describe can be caused by interference from another device. Ensure that you don't have other electronic equipment near the TV. It can also be indicative of trouble with the display itself for which repairs might be required. If needed, service can be obtained by carrying the unit in to the place of purchase.

Jan 10, 2010 | Insignia LCDTV26 26 in. Television

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LCD fades can be caused by many issues HOWEVER none of them are user serviceable. Contact the customer support team for a RMA request!

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