This is in the latest Samsung LCD 750 series Manual:
Originally Posted by aydu
Do not display a still picture for a long time
This causes the image to remain on the plasma screen
(“Image retention”). This is not considered a malfunction and
is not covered by the warranty.
4 : 3 12 To prevent “Image retention”,
the screen saver is
automatically activated after
a few minutes if no signals
are sent or no operations are
performed. (p. 45)
Typical still images ■ Set up • Channel number and other logos • Image displayed in 4:3 mode • SD Card photo ��• Video game ��• Computer image
Do not place the unit where it’s exposed to sunlight or other
bright light (including reflections).
From the Panasonic user manual for their current sets.
While IR and burn-in are two different things in my mind, apparantly the manufacturer thinks watching 4:3 content, or playing a video game is a danger to their plasmas.
The manufacturer is enough of an authority for me.
"Precautions When Displaying a Still Image
A still image may cause permanent damage to the TV screen
Do not display a still image on the LCD panel for more than 2 hours as it can cause screen image retention. This image
retention is also known as screen burn. To avoid such image retention, reduce the degree of brightness and contrast of the
screen when displaying a still image.
Watching the LCD TV in 4:3 format for a long period of time may leave traces of borders displayed on the
left, right and center of the screen caused by the difference of light emission on the screen. Playing a DVD or
a game console may cause a similar effect to the screen. Damages caused by the above effect are not
covered by the Warranty.
Displaying still images from Video games and PC for longer than a certain period of time may produce partial after-images. To
prevent this effect, reduce the ‘brightness’ and ‘contrast’ when displaying still images."Ir or burn in is just not a consideration when choosing a flat panel. Move on and good luck looking for next myth/urban legend to try to rip plasmas.