When tv is turned on you get poicture and sound but there are broken horizontal lines from top to bottom of screen. this occurs on all hdmi inputsincluding roku and dvd player.

You can spend $300 to $500 fixing this or just do the best thing most cost effective thing and replace the TV.

Black square on the screen Vizio Gallevia 47" 1080p - Fixya

www.fixya.com/support/t355299-black_square_screen_vizio_gallevia_47

Jan 16, 2008 - Black square sized app. 10"x10" pops up on the bottom right corner of the screen and won't go away. .... Model 42LG70. Why is nothing on screen except for horizontal green and pink pixel line? I am looking at replacing the ...

bad screens display vertical lines with a white background ...

https://www.ifixit.com/.../bad+screens+display+vertical+lines+with+...

iFixitJun 17, 2014 - I am now replacing a screen on a different G2 and I am on the secondscreen. ... A touchscreen smartphone made by LG Released: 09/2013 Model: VS980..... on the rigth side, from the top to the botton has 6/7 black lines.Missing: 42lg70 ‎pixel

Broken LG LCD TV Capacitor Black Screen My Wont Turn ...

? 6:27
https://www.youtube.com/watch?v=EbGiXqBAvvo
Aug 25, 2010 - Uploaded by FixItUrselfDummy
Broken LG LCD TV Capacitor Black Screen My Wont Turn On ...How I fixed my LG TV, Won't turn on or show picture Model: LG42LC7D ...Missing: horizontal ‎pink ‎pixel ‎line

Not good. You may have a tab failure. A repair shop may be able to diagnose and repair this, but most likely the lcd panel is broken. The panel is the most expensive part of flat tv's. A new panel will cost more than a used tv.

Hi Mandy

Think you have a problem with the cabel or if you could adjust the channel for the correct signal. Maybe the tv-chip on the consol are broken, and you live to far from me for me to help :)
you have any friend who could take a look ?

Best regards
Joakim

It sounds like the panel is defective

it sounds like one of your buffer boards are going bad. these are the boards that help put the picture on the screen. there are 2 boards an upper and a lower board. if you remove one and turn the tv on you will get half a screen. see then if you get the lines. please leave rating after you check.

Get into the TV menu and locate the H (Horizontal) and V (Vertical) picture options. . .increase the V until line at the top is gone.

i have same problem it happens with my hdmi and component port.
did you ever find out what the problem was?

Sounds like a bad component on the video board. These days, TV techs just swap out boards for whole new ones.

Sounds like you have AC leakage somewhere. If you have cable TV, disconnect it from the TV and see if the line dissapears. If it does then most likely it is a faulty cable box or a bad ground on the cable system.