... ensure perfect quality.* If the 3D glasses do not receive the sync signal, automatically turn off after ... . Verify if the image appears in 3D. If not, please recheck the connection and setting of the whole 3D ... Verify if 3D image are eye-strain free, if not, change the 3D setting.5. 3D glasses will ... 3. If you do not receive these emails or for general questions about the item, please contact us by our ...