External Device Connection Issues

When the TV has difficulties with external device connection, these solutions may help resolve the problem.

Problems

Possible Solutions

The TV is having trouble receiving a signal in the cable box.

  • If there is no signal occasionally, unplug cable from TV and re-plug after 60 seconds.
  • If there is always no signal, or the signal cannot be restored after plugging and unplugging, you can press button to select HDMI Format if you select HDMI as input, to confirm whether the signal can be recognized.
  • Change to another HDMI port.
  • Change to another HDMI cable.

There is no sound.

  • Check whether ARC is selected at > Settings > Display & Sound > Audio Output > Audio Output. If not, you need to check whether the external power amplifier device is connected to the ARC port or optical port of the TV.
  • > Settings > Display & Sound > Audio Output > Digital Audio Out. You can try to select Auto, Pass Through, PCM, Dolby Audio - Dolby Digital, or Dolby Audio - Dolby Digital Plus.
  • Whether the power amplifier device port is connected correctly.
  • If you select HDMI as input, you can try > HDMI Format.