Use this link to get a proper grey screen and if there is burn in it can be seen as a faint line across the screen.
@ ~1.25 inch down the screen (~3 cm)
I switched over to the black screen mode to stop any further screen-burn-in.
http://www.lagom.nl/lcd-test/inversion.php#invpattern
@ ~1.25 inch down the screen (~3 cm)
I switched over to the black screen mode to stop any further screen-burn-in.
http://www.lagom.nl/lcd-test/inversion.php#invpattern