Samsung Smart TV E-Manual page 199

The Problem
A POP (TV's internal
banner ad) appears on
the screen.
The TV is making a
popping noise.
The TV is making a
humming noise.
Change the Use Mode (Support
The expansion and contraction of the TV's outer casing may cause a popping
noise. This does not indicate a product malfunction. The TV is safe to use.
Your TV utilises high-speed switching circuits and high levels of electrical
current. Depending on the TV's brightness level, the TV may seem slightly
noisier than a conventional TV.
Your TV has undergone strict quality control procedures that meet our
demanding performance and reliability requirements.
Some noise coming from the TV is considered normal and is not an acceptable
cause for an exchange or refund.
Try this!
> Use Mode) to Home Use.