@Wallace58 I had something similar with my Glass TV which suddenly developed a vertical 2 inch dark grey line on the screen. A normal reboot didn't help so I left the TV unplugged overnight and the line disappeared and luckily it never came back.
Give it a try but if it doesn't resolve the issue or if it keeps coming back you should call Sky for additional troubleshooting and if necessary a replacement TV (assuming it is still within its 24 month warranty).
------------------------------------------
If my post has solved your issue please mark as an "Answer" as it helps others identify the solution
If it has helped please give it a "Like"
