Troubleshooting
External Device Connection Issues
When the TV has difficulties with external device connection, these solutions may help resolve the problem.
Problem Possible Solutions
The TV is having trouble
receiving a signal from an
external set top 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 > Sound > Audio
Output Settings > 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 > Sound > Audio Output Settings > Digital Audio
Out. You can try to select Pass Through, PCM, AUTO, Dolby Auto -
Dolby Digital, or Dolby Auto - Dolby Digital Plus.
• Whether the power amplifier device port is connected correctly.
Related information
External source connected but no picture or sound.
HDMI & CEC Issues
When HDMI & CEC is not working, these steps may help resolve the problem.
Problem Possible Solutions
HDMI & CEC does not work.
• Confirm that the device is a HDMI & CEC compatible device.
• Check if the power cable of the HDMI & CEC device is properly
connected.
• Check the cable connection of the HDMI & CEC device is secure.
•
Check CEC function of your TV is turned on.
> Settings > System > HDMI-CEC > HDMI-CEC
• Check HDMI & CEC feature of the connected device is turned on.
• Depending on the connected HDMI device, the HDMI & CEC control
feature may not work.
Related information
Use HDMI-CEC on page 21
Application Issues
When some apps will not play, this may help resolve the problem.
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