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.
  • Change to another HDMI port.
  • Change to another HDMI cable.

There is no sound.

  • Check whether ARC is selected at > Settings > Display and 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 and sound > Audio Output > Digital Audio Output. 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.