I have a Samsung HLN4365W that has scrolling dark lines moving accross the screen. They use to go away after about 10min. now they do not go away no matter how long the tv is on. ?????

Hello,

This is most probably a faulty DMD chip, because of the snowy effect, if it only happens for some seconds then it might need replacing. Normally this does not go away, have you had any repairs done to this TV recently?

it's very possible that the computer part is damaged. I don't think it's a power problem or it wouldn't be on. I really believe it's a computer part that has gone out. it needs to be checked by a sewing machine repair tech

i'm sorry to say It's most likely broken. I think the LCD screen is going. Try calling up Samsung to see if they can fix it or repair it for cheap. Good Luck.

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.

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.

We have aKDF-E42A10 for a bout 2 yearsnow and we now have 13 horizonal lines across the screen, they look like small square dotted lines across the entire screen from top to bottom. It be gan acouple of months ago as 2 of these lines that seemed to move up the screen. I called technical support and he made it sound like he never heard of the problem. I am very upset with sony right now. Anybody know how to fix the problem?ricedog

nice to have model number.
tap on crt board with a plastic handle see if it goes away.
otherwise it sounds like the tube is bad, you could also try to adjust the red brightness screen

sound if u might have what is called a crt burn

try to put away any electric device which is near your tv set

I habve seen this issue with this sets and if the vertical lines are in the menu as well and there are more than one line the panel would need to be replace. Contact a tech in your area to see if then can put the set in white screen mode and leave it there for a couple of hours and see if the lines go away. If not then the set would need a panel.