3D pictures are not displayed. 3D effect is weak.

• Be sure that there are no obstacles between the TV and the Active 3D Glasses.
• Replace the battery in the Active 3D Glasses.
• Be sure that the Active 3D Glasses are powered on.
• If two pictures are displayed side-by-side, press the 3D button repeatedly until [3D (Side-by-Side)] appears. If two pictures are displayed one above the other, press the 3D button repeatedly until [3D (Over-Under)] appears.
• If the [3D Display] screen appears and 3D pictures are not displayed, turn off the device that plays 3D content and turn it on again.
• Perceived 3D effect may vary from person to person.
• 3D effect may be less pronounced and the display colour will be shifted if you lie down or tilt your head.
• It is necessary to register your Active 3D Glasses to the TV before use. To use the glasses with another TV, it is necessary to re-register. Turn off the glasses before re-registering.
  Press the button to jump to the title list. Then, press the button again to go to “Watch in 3D” for details.
• Wireless devices or microwave ovens may affect the TV as the TV uses 2.4GHz bandwidth. In this case, try to register again.
• 3D signal of 4K cannot be displayed.

Black bars appear on both sides of the screen when watching 3D pictures.

• Black bars appear on both sides of the screen in order to process 3D signals for the simulated 3D display mode or when adjusting the depth of 3D pictures in [3D Depth Adjustment].

3D display automatically switches on when 3D signal is detected.

• Set to manually turn the 3D display on or off. Press the HOME button, then select [Settings] → [Display] → [3D Settings] → [Auto 3D] → [Off].

The message [3D signal is detected.] automatically appears when 3D signal is detected.

• Deactivate the [3D Signal Notification] setting. Press the HOME button, then select [Settings] → [Display] → [3D Settings] → [3D Signal Notification] → [Off].

You cannot turn the Active 3D Glasses on.

• Replace the battery. (Applies only to TDG-BT400A/BT500A.)
  Press the button to jump to the title list. Then, press the button again to go to “Watch in 3D” for details.

LED indicator on the Active 3D Glasses blinks.

• Lights up for 3 seconds: Indicates when turning on the glasses.

• Blinks every 2 seconds: Indicates the glasses are powered on.
• Blinks 3 times: Indicates the glasses have been powered off.
• Blinks green and yellow alternately: Indicates the glasses have started the registration process.
• Blinks 3 times every 2 seconds: Indicates the battery capacity is almost running out. Replace the battery.

Surrounding light flickers.

• If you watch the TV with 3D Glasses under fluorescent lighting, surrounding light may flicker.