Samsung PN51E550 E-Manual page 30

back of your Plasma TV is too close to
a wall or other hard surface. Also, try
rerouting your connection cables.
An improperly installed wall mount can
also create excessive noise.
I age Retention {Burn In)Issue°
To minimize the possibility
of screen burn, this unit is equipped
with Pixei Shift screen burn reduction
technology. Pixel Shift lets you set the
picture so it moves slightly up and