Sharp LC-70LE750U Horizontal Lines

[teebee65]

My Sharp LC-70LE750U TV is having an issue with Horizontal Lines. I have read several post regarding the side tabs. Not sure if this would be my issue or what. I understand the T Con board would be related to Vertical Lines only and since this is Horizontal lines the issue would either be a bad LCD Panel or the side tabs. I will include images to see if someone can identify the issue. One more thing to add, the dark shadowed lines flickers in different parts of the screen. The thin colored lines sort of flicker and changes colors but normally stays in the same location across the screen

[teebee65]

Re: Sharp LC-70LE750U Horizontal Lines

Additional info. Trying to figure out which side could be the problem if it is the side tabs. Pictures below indicate the sides I disconnected the bottom ribbon cables
Disconnected Bottom Left Side Cable (facing front), left picture is dark with lines across the whole screen. Also while video is playing, dark lines flickering randomly from top to bottom of screen. Right side of screen appears clear in background of the dark flickering lines.

Reconnected Left Cable and

Disconnected Bottom Right Side Cable (facing front), right picture is dark and lines does not go all the way to the left side of screen. No flickering of dark lines. Left side picture pretty much clean and bright image

[teebee65]

Re: Sharp LC-70LE750U Horizontal Lines

One more example of issue via youtube link I uploaded

https://www.youtube.com/watch?v=d9lrpnaNyrM

[neilc6]

Re: Sharp LC-70LE750U Horizontal Lines

Might want to go through this thread. Fix could be to remove the right side drivers.

https://www.badcaps.net/forum/showthread.php?t=49281

[teebee65]

Re: Sharp LC-70LE750U Horizontal Lines

Ok so it does seem to be the right side drivers and NOT the panel?

When you say right side, are we talking right side facing the front of the screen. Don't want to undo the wrong side

[neilc6]

Re: Sharp LC-70LE750U Horizontal Lines

Never have done this repair personally but have gone through that thread. Dont think there is much to lose even if it is a bad panel. The lines dont go all the way across so likely the side drivers. Remove the driver boards from the bad side. Your pictures look very similar to those posted on that thread.

[teebee65]

Re: Sharp LC-70LE750U Horizontal Lines

I am going to do it, I am just trying to confirm which side I need to do. It was mentioned right side. Not sure if they mean looking at front/right or looking at rear/right

[neilc6]

Re: Sharp LC-70LE750U Horizontal Lines

From your reference you said the left side facing the screen is good with the right side disconnected. That means the right side is bad and should be removed.

[teebee65]

Re: Sharp LC-70LE750U Horizontal Lines

Thanks to this board I was able to remove the side tabs on the right side and bring my TV back to life. Cleared all the horizontal flickering lines. Unbelievable how cutting wires on a TV makes it work.

Now to try and figure how to get a thin dotted vertical line right down the center removed. This vertical line was there before removing the side tabs. Had nothing to do with my other issue. Sometimes the vertical line is more noticeable than others depending on the darkness or lightness of the picture. Hopefully there is a fix for this

[neilc6]

Re: Sharp LC-70LE750U Horizontal Lines

Vertical lines are usually panel problems. You can try pressing down on the tab bond for that section.

[Davi.p]

Re: Sharp LC-70LE750U Horizontal Lines

If the line is unstable then check the boards especially mainboard for pieces of metal that touches under it on the solderings..
For the first fault there is a method not desctructive that works, is more complicate anyway.