External Device Connection Issues

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

Problem

Possible Solutions

I have connected an external source to my TV but I get no picture and/or sound.

  • Check whether the connection between the external device and your TV is correct.
  • Make sure you have made the correct selection of input source.

There is no signal or weak 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 try Menu > 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 if the Audio Out option in the menu is ARC/eARC, 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 > Sound > Advanced Settings > Digital Audio Out. You can try to select PCM, Dolby Digital, or Dolby Digital Plus.
  • Whether the power amplifier device port is connected correctly.
  • If you select HDMI as input, you can try Menu > HDMI Format

The remote control does not work.

  • Confirm that TV still has power and is operational.
  • Change the new batteries in the remote control.
  • Check if the batteries are correctly installed.
  • If some buttons don't work, but the volume buttons can work normally, it seems there is a problem with the application.