[Samsung TV] Troubleshooting picture issues

Last Update date : Mar 17. 2026

Important Note: The information on this page is for Hong Kong products only. Models, sequences or settings will vary depending on location and/or where the product had been purchased. To be redirected to your local support page please click here.

Watch the video on "Troubleshooting picture issues":

Troubleshoot picture issues Troubleshoot picture issues
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In case the set-top box screen does not appear or cannot be connected, the set-top box power may be off or there might be an issue with the signal cable.

Reconnect the power when there is no set-top box power light. The set-top box might be on standby mode and you can turn it back on using the remote control.

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Press the Home button on the TV remote control and select Menu → Connected Devices  → Input mode connected to set-top box.

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Note: The HDMI connector may differ depending on the TV model.

When watching a broadcast by connecting the set-top box and the TV, make sure the external input cable such as HDMI is properly connected.

1 Built in TV
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2 One Connect
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Press the Home button on the TV remote control and select Menu → Settings → Support → Device Care → Self Diagnosis → HDMI Troubleshooting.

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1 Select the external device you want to check for problems
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2 If there is no problem with the connected screen, select "Yes"
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3 Adjust the volume. If you can hear the sound of the connected device without any problem, select "Yes"
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4 If the cable is normal, no problem would be detected
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5 However, if there is no screen or no sound, select "No". Select "Start test"
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Depending on the condition of the cable, it might take approximately 2 minutes, so please wait.

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If the above information does not match what your product is showing, you may check the User Manual for your product. If you are unable to solve the problem, please contact us for further assistance.

Thank you for your feedback!

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