Google nest Black vertical lines on the left of the screen

[CharlesM]

I bought a google hub in 2019 .

A few days ago I saw 3/4 lines on the left-hand side of the screen.

Now the lines have increased. 
I tried a total reset but not solved.

[HOHOHO29]

Same here, factory reset does not seem to resolve this issue, mines all over the screen with two blue horizontal smudges.

[Azarco]

Hey All,

Since this thread hasn't had activity in a while, we're going to close it to keep content fresh.

We hope you were able to get the help you need. If you still need assistance with your Nest Hub devices, feel free to submit another post and provide as many details as possible so that others can lend a hand.

Thanks,
Alex