TV screen has 2 different shades horizontally

This sounds like a heat build up in the TV set if not ventilated properly it causes the shading effect on the screen coating causing the dark area eventually it takes over the whole screen

You may try a new T-CON, but most of the problem could be a display panel.

Thin vertical lines cover screen on Samsung LCD - AVS Forum ' Home ...

www.avsforum.com/.../1127410-thin-vertical-lines-cover-screen-samsun...

Mar 7, 2009 - 30 posts - ‎25 authors
Hi guys, Ive had this TV for about a year now - all of a sudden thin vertical lines havecovered my screen (show in link below) No matter what ...Missing: 40bx421

TV Repair Help for Vertical & Horizontal Lines on Your TV ...

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https://www.youtube.com/watch?v=b0sI7LB4cZE
Apr 25, 2014 - Uploaded by ShopJimmy.com
TV Repair help with troubleshooting lines on your TV Screen. ... hi i have a sony bravia mdel # KDL46EX523. i have horizontal multi colored lines ... My TV has the following symptoms: - Horizontal lines from top to bottom of .... thick(like 1-1/12 inch) and a couple of green vertical lines next to the black one.Missing: kdl ‎40bx421

Flat Screen TV Has Lines Going Through Screen - Possible ...

If you wish to get some details; check the sites linked here.
https://elektrotricks.blogspot.com/
https://electronicshelponline.blogspot.com/
Faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault. Search the site by type in the Brand Name of your set, in its search bar at the right side column, and press enter. See it in by Webview with mobile or by desktop. Mobile View has no search box. Screen-shots to defective LCD panels are given. You can see and compare to that to your TVs', and can make sure about the fault to an extent.

Check and replace its back light CCFL lamps. If these are faulty, this kind of fault can occur. When replace it, replace all. None one or two. If you wish to get more details about the back light CCFL lamps and its working, check this link. Pull up older posts there.http://electronicshelponline.blogspot.com/

Where did you buy it? Possibly you can return it, if you bought it at a big retailer like Target or Walmart, they'll give you dirty looks but let you return it. Buying foundation is very very difficult... a few guidelines - (1) you need different shades for different seasons because your skins (all types) tans; (2) throw it away as soon as it gets old, that adds to the cakey look and the shade different - best tell tale sign that it's too old is it will look orangey (yuck!); (3) I know this is so gross... but you've gotta do it, it's why they have testers out... take some of the foundation and put it on the interior of your wrist, best bet to go to a very clean store - we know not all locations of Target/Walmart/Walgreens are the same... don't buy yet, you've got to go outside in sunlight and look at the color ... how should it look? good, but slightly darker than your wrist.. why use your wrist? 'Cause you don't know who else has been touching that stuff! Good luck, please let us know how it goes!

no u cannot do anything on ur own u need to call an expert,

Look carefully at your images taken with flash... on the horizontal image is the lower part of the image slighty darker and have a rounded fall off at the edges? Is the vertical image dark side a straight hard line or is there a rounding to the top and bottom?

What we are looking at is if you have a very wide angle lens with the lens shade attached to the lens, then the built-in flash catches part of the lens shade and make a shadow on your subject... take the lens shade off and try the same shot and see if that makes a difference...

Have a great day...

Ed

CHECK THE OPTICAL ENGINE. THEN AGAIN THE LG BRANDS BELONG TO GARBAGE TIP

hi, sounds like the screen has a bad connection. Are the horiz lines the same shade all the way across?