Samsung UE40ES7000U E-Manual page 274

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Light Effect
You can turn the LED on/off on the
front of TV. Turn it off to save power or
if the LED is too bright for you.
N
Set the
the power consumption.
N
The colour of light may vary
depending on the model.
●
Anti Flicker
Remove flickering by adjusting camera
power-line frequency.
for LED TV
Light Effect to Off to reduce