White line down side of screen

Something is changing inside the TV. Most likely a voltage from the power supply since that would affect the different circuits that are causing multiple visual symptoms on the screen, and as the voltage returns to normal; all of the symptoms go away. Suspect the main power supply board in the TV, Most likely there are faulty filter capacitors that control supply voltages by filtering out AC interference.. When they start to go bad they begin to run warm and it takes them longer and longer to start working correctly. Probably (probably) when you first noticed the problem, it went away in a few minutes and it is taking longer and longer for it to clear up.. Sounds like they are close to quitting completely !

TV needs servicing.

There are some semiconductors or capacitors that are leaky. Might need thorough check up inside the TV.

Hi that can be two things. First your LCD screen might be bad the second thing is your T-con board might be bad. The only way to find out is to actually replace the T-con board. If the line goes away that was your problem if it does not then it's your screen. You can find parts for that TV at www.interliquidparts.com

Is your tv a plasma tv or an lcd tv? When you say shadow, do yo mean a band across or down the screen, or is it a patchy shadow?

Ur backlight video board is dying,must replaced to solved this problem.Part and labors about $500.

Try another resolution for the display and see if it goes away first.

its a LCD connectors. re-connect it properly. some loose connection.

All I can say is when you watch T.V. the plasmas run off of plasma gas and when you leave something on for so long it burns in the screen. I have the same T.V. and when watching like the weather channel it leaves lines but they go away. If yours are permanent then you can't do anything, but it may help if you go on your remote and go to "menu" then look for "setup" and scroll down with the arrows on your remote. Look for "screen burn protection" and select "white screen". This will make your whole screen white and it may take out the lines. If you let it sit white it won't hurt it. All one color won't hurt, the only thing that hurts is like bright white lines in front of a dark background. Just give your T.V. a break from time to time ESPECIALLY ON VIDEO GAMES. T.V. shows that are HD usually have their channel icons that move or are very dim and they won't hurt. Just go to what I told you and let it sit about 20 minutes, if that doesn't help, then the T.V. you have i believe comes with a 2-year standard warranty and if it's under warranty take it back if you have the reciept. If no reciept then call 1-800-SAMSUNG.