Horizontal lines have appeared on the screen what has caused this and can I get rid of the lines.

The horizontal lines that are showing up on your TV's screen is caused by either a bad cable or a cable that is not correctly fastened to the input and the output ports for the TV and it can cause interference then and the signal and cause horizontal or vertical lines to appear. It could also be the TV"s screen is no longer working and needs to be replaced.

The picture shouldbe free of vertical or horizontal lines.

1. If the lines are present on the TV screen, press the SMARTbutton. on the remote control and select Settings> SUPPORT > Picture Test.
2. This menu will appear on the test picture. Select whichoption best describes the result you have.

https://www.lg.com/us/support/help-library/horizontal-or-vertical-lines-tv-CT10000020-1387209695776
A single set of horizontal lines could indicate damage, a graphics system failure, or loose internal video cables. Broken signals from cables or graphics hardware creates impurities in reproducing an image on an LCD screen, conditions that often manifest in the form of vertical or horizontal lines of color. https://itstillworks.com/causes-horizontal-lines-lcd-panel-37988.html

The picture should be free of horizontal lines. If the lines are present on the TV screen, press the SMART button on the remote control and select Settings > SUPPORT > Picture Test. This menu will appear on the test picture. Select which option best describes the result you have.

Fix Panasonic Plasma TV Vertical or Horizontal Bars ...

? 10:21
https://www.youtube.com/watch?v=CpWZTnAXbLg
Dec 30, 2013 - Uploaded by Pet Rock's Garage
This video covers how to fix a Panasonic 42" Plasma TV model TH-42PX600U that has vertical distorted ...

Horizontal black lines on Samsung 50" plasma tv - Forums - CNET ...

www.cnet.com > Forums > Samsung

CNETJun 11, 2015 - This past spring, a thin black horizontal line appeared across the screen, everything else is working fine. Next day ... In reply to: Horizontal black lineson Samsung 50" plasma tv .... I tried a white wash on the TV, but that didn't removethe line. Plasma TV has 3 thin black lines
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Black Line across Samsung 50" Plasma has appeared?
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Vertical black line on Sony PFM-50C1 Plasma Display
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whether the line-shaped vertical or horizontal? if it appears a horizontal line on your side, it signifies the vertical rays do not exit the screen or your TV vertical part is not working. damage can be caused by IC Vertical, or in the vertical deflection coil yoke.dan if a line that appears is from top to bottom that indicates the horizontal section is not working, usually there is a problem of the deflection yoke is not connected or defective.

I am sorry but, usually, that is the start of the screen's LCD failing, it will most likely get worse over time... This is caused by the "Driver" transistors failing....

the only thing i can think of is the sensor being misconnected or kaput. are you viewing them on the camera screen or a pc? it could also be camara screen...

Gray horizontal lines appears when video heads in camera got dirty / clogged.
Use good quality video cleaner cassette to clean video heads, problem will resolve.

i have a whie line going horizontal all the way across the sceen. how do i get rid of it?