LG 47LM9600 Owner's Manual page 101

If the pointer has not been used for a certain period of time, it will disappear.
When the pointer disappears from the screen, shake the Magic Remote
Control to the right and left. Then, it appears again.
If you press the navigation button while moving the pointer on the screen, the
pointer disappears, and the Magic remote control works as a regular remote
control.
Use within an effective distance of 33 ft. (10 meters). Using the Remote
Control from greater distances or when obstructions block the sight line may
cause malfunctions.