I had a Sharp Aquos LC-60LE632U that developed A vertical Multi-colored Line on the right side of center. The Business owner that picked it up mumbled something about a panel. He took the T.V. To his shope. He Called Us about a week later and said the T.V. Worked Fine and there Wasn't any problems. We did not feel comfortable with that and asked for a new replacement. After much bantering around he agreed. About two weeks later we went to pick up the new t.v only to find it was the same one by checking the serial numbers. I asked for a refund. He gave it to me. Now he is suing us telling us that we damaged the T.V. by pluggin in HDMI Cables while it was on. Which we did not. However he said he has a letter from sharp saying that was what happened. So now he is suing us for twice the amount of the cost of the original T.V. He said we voided the warranty and he has to buy a new warranty. So I guess our question is can plugging an HDMI cable into a t.v. while it is on cause damage and can specific damaged be indentified?

SOURCE: HDMI module

acess the service menu (power off then press mute 1-8-2-power) you should have a service bookfor your setting you might have the hdmi off.

SOURCE: My Samsung LN-S4692D

before you give up..call samsung directly, they are very consumer oriented and if it is only a couple months out of warranty you might get them to repair it,, 1 800 samsung

SOURCE: Hitachi 43FDX15B color convergence problem

http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
Sony Convergence
http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/
http://www.techlore.com/article/19631/Sony-Convergence-Procedure/

SOURCE: Samsung HP-R4252, white vertical line

Unfortunately you probably have a bad lcd panel. This is caused by the heat of the panel releasing the solder that holds the ribbon cable that supplies the picture information to the panel. A lcd panel is more often than not, more expensive than getting a new tv, also the new tv will come with a warranty. Most of the unit I have had this problem with were uneconomical to repair. Sorry for the bad news, Hope this helps.

SOURCE: CRACK LCD TV SCREEN

I had one broken a few months ago. I got a couple quotes.. it was about $200 less then a brand new one. I'd just buy a new one.
For the new TV I'd pickup a screen protector for it. My son threw a toy at my TV the other day and I nearly had a heart attack from the flashbacks. Thank God I picked up one of these a few weeks earlier. It stopped it. LCD screens really break easily as you know. http://www.tv-armor.com
Mike