Why do purple vertical lines appear on the right side, then just a blue glow?

SOURCE: 40 inch lcd blue line vertical

The display screen is made of a matrix of elements connected to cables along the side and top. On your unit, some of these many, tiny connections are making contact intermittantly thus losing the elements in that area. These contacts are held in place with just pressure and if that is disturbed, you lose that line of elements. Try squeezing the cabinet of the TV on the outside at the top in the area of the loss and see if that makes a difference. May have to go inside and see if the contact assembly is disturbed or warped or something.
Hope ya fix it!

SOURCE: tcon board location

There are 2 hinged black retainers. Gently pry them up and the ribbons slide away from the board.

SOURCE: Vertical lines in LCD tv screen

Need to check the two things.

1st -- need to exchange T-con Board.
2nd -- need to exchange the cables between T-con & LCD panel or
between T-con & Main(LVDS cable)

SOURCE: got a blue vertical line on me plasma

I had the same problem, a vertical blue line from top to bottom on my samsung TV.

Try this download this http://www.jscreenfix.com/video.php i burned it to a dvd and it fixed it within a minute.

SOURCE: We have the Samsung LN46B650 - vertical lines just

The problems u discribing could be either boards the Tuner board or the T-con board.The Tuner board is the board,take in the incomming signal cable.The T-con board is the board sit right in the middle botton of the LCD screen.To regulate and control the ditgital signal go into the LCD screen.If there no trauma to the LCD screen panel.Try change the T-con board first,because it small miner board and it cheaper $50-$75.The Tuner board it a major board and it big and it control all the incomming signal to the tv.This board,will cost u $150-175.Tries websites like Shopjimmy.com,Ebay.com to buy either T-con or Tuner boards.Change either of those boards or both.Same problems after this the LCD screen is short in useage and it dead.Not worth repairing,if LCD screen panel is dead,because it limited production and 90% important to the tv.It will,cost the same to replaced as to buy a new tv.If tv require a new LCD screen panel.