Samsung UE40ES7000U E-Manual page 776

POP (TV's internal banner ad) appears on
the screen.
Select
For details, refer to the
Plasma TV is making humming noise.
for PDP TV
a soft humming sound. This is normal.
It's caused by the electrical charges
that are used to create the images on
the screen.
Home Use
Plasma TVs typically make
under Setup
Setup
mode.
Feature.