I'm currently having this issue with my samsung ks8000 55"TV
I Hope this extra specs help out and what I was doing when my screen messed up as shown on the image above.
I was playing Devil may cry 4 on the Sony Ps4 pro
EDIT:When all of sudden, the screen had this cross shape green and bright pink/gray lines running across the screen and the bottom ghosting and flickering as shown on the image above.
The problem never went away, tried resting to factory , tried un plugin it try multiple hdmi out puts, all apps,all channels have these permanent lines there.
On the all in one samsung KS8000 I had the following connected.
PS4 in HDM1
first gen google chrome on HDM2
Optical cable running to the ps4 (sound)
USB charging a PS4 controller
USB with a usb Fan (for when it gets hot- but it's winter so my house has been 71-75)
My wife may have been blow drying her hair upstairs
Please note:I could not take a good pic of my screen so I phothoshopped the issue.
-Service tech will be coming Next week to take a look at it and possibly replace the panel (since I'm still under warranty)
I'm just wondering what could have caused the issue, so I can avoid it in the future, and also what to expect from the technicians visit?
I had the tv for 4 months btw.