WHEN TV IS TURNED ON IT SHOWS WELL FOR ABOUT 10 MIN THEN THERE ARE LINE ON SCREEN BUT THE SOUND IS STILL THERE

Hello
in this case ld board is defective please replace ld board .
thanks
M Nasir

Cheaper to replace the TV than repair this problem.

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Line, faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.

Send your tv back for professional repairs as this is the first sign of failing LED's somewhere in your tv. I hope this helps

It most likely is coming (based on model number listed here) from the high voltage transformer---ways to silence that up to and including replacing that part.

I think that the pinconnecter needs to be replaced then.

call a technician to look for it. there must be loose components inside

I turned on the tv this morning it ran about 10 min.iheard a click the screen went black and will not come back on

It appears you may have had a line collapse caused by a poor connection in the line output stage, it would be a matter of resoldering around this area. Now that you say it will come on could indicate that a component has now failed as a result of the line collapsing, more than likely the line output transistor has now also failed & would need replacing.