It's called doming and is when high beam current causes the shadow mask to
heat up, expand locally and distort. Turn down the brightness and contrast
to reasonable levels and it won't happen.

"Allan" wrote in message
om...
Hi,

On my Mitsubishi cs-2710ra TV, if a scene contains an area of bright
white that persists for more than about 10-15 seconds, that area of
the screen will start turning green. After the white scene goes away,
the green gradually fades.

Why does this happen, and what is the remedy for this, if any?

-Allan