Samsung PL64E8000GFXZP - Manual (Page 593)

3D (Troubleshooting)
The 3D Active Glasses are not working
correctly
Make sure the glasses are turned on.
The 3D Active Glasses may not work
properly if there is any other 3D
product or electronic devices turned on
near the glasses or TV.
If there is a problem, keep other
electronic devices as far away as
possible from the 3D Active Glasses.