MY TV KEEPS HAVING VERTICAL LINES OF DIFFERENT COLORS IF YOU TURN IT OFF AND BACK ON IT CLEARS UP BUT IT IS DOING IT MORE FREQUENTLY.

What causes vertical colored lines on a TV screen? When a TV is showing vertical colored lines, a loose wire cable in the TV might be the cause. If you knock on the back of the TV, the vertical colored lines MAY disappear temporarily. This is a sign that a cable is loose or the T-Con board is faulty.

https://removeandreplace.com/2018/05/01/tv-has-different-color-vertical-lines-on-screen-how-to-fix/

Try cooking the tcon board in the oven...there are some postings on youtube that tell how to do it, if that doesn't help replace the board...Good luck!!

Does the menu function display the same lines? What kind of cables are using ? (HDMI, Component vid, S-video, co-ax)
Were you as tenacious checking all cables/connections as you were the electronics? Lets rule out this all too often over-looked possibility.
Do you still get the lines with nothing connected to the TV? (no source connected)

LG plasma vertical line repair - YouTube

? 2:33
https://www.youtube.com/watch?v=24FkcQoeGPg
Feb 10, 2013 - Uploaded by Matt Mayer
I have an LG plasma, my vertical line is in the middle, as if one would have ... Panasonic Plasma TV TC-P50X5 Vertical GreenBar Line Fix ...

EASY HOW TO FIX LG plasma TV - color bars - YouTube

? 4:45
https://www.youtube.com/watch?v=QyaBiSkc1l8
Dec 16, 2010 - Uploaded by Tampatec
diy HDTV Plasma tv repair tv reparar the red green blue color stripe line vertical bars T- control t-con ..

T'Con board fault. 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.

mychaelmuch6
Go to menu.
press screen selection
just follow steps on how to clear or reset T.V.

replaced main board
Manufacturer Samsung Part Number BP94-02065A Description ASSY PCB MISC-DIGITA

Go to the last page of troubleshooting in the manual and perform the system reset procedure. Basically hold the Wega "arrow up" as you manually switch the TV off. It will automatically switch back on and reset. I had only vertical colored lines on the screen, with audio but no response to any remote control functions. The rest worked perfectly.

Happens with mine also usually happens when you change channels alot all you need to do is shut tv off and turn it back on.

if the tv is less than a year old , call 1-800-SAMSUNG for warranty repair, the lcd panel is bad