If you have purchased a new Samsung Smart TV or are planning to buy one, it is important to test all its major features to make sure everything is working properly. Samsung Smart TVs come with a built-in Self Diagnosis feature that allows you to test video, picture quality, sound, HDMI connections, signal information, Wi-Fi and internet connectivity.
Using this feature, you can identify potential problems with your TV without installing any additional apps or software.
Follow the steps below to test your Samsung Smart TV.
Step 1: Open Self Diagnosis on Samsung Smart TV
Turn on your Samsung Smart TV.
Press the Home button on your Samsung TV remote.
Navigate to Settings.
Select Support.
Open Device Care.
Select Self Diagnosis.
Now you will see different testing options available on your Samsung Smart TV.
Note: The menu names and locations may vary slightly depending on your Samsung TV model and software version.
Step 2: Perform Video Test
Open Self Diagnosis.
Select Video Test.
Your Samsung Smart TV will start playing a sample video.
Carefully observe the video playing on your TV screen.
Check whether the video plays smoothly and whether you notice any display abnormalities.
If everything looks good and the video plays properly, select Yes.
If you notice any problem with the video or display, select No.
Step 3: Perform Picture Test
Go back to the Self Diagnosis menu.
Select Picture Test.
Your TV will display a test image on the screen.
Carefully check the picture quality, colours, brightness and overall display.
Look for unusual lines, spots, colour abnormalities or other visible display issues.
If the picture looks perfect, select Yes.
If you notice any picture quality or display problem, select No.
Step 4: Perform Sound Test
Return to the Self Diagnosis menu.
Select Sound Test.
Your Samsung Smart TV will play a sample sound.
Listen carefully to the sound coming from your TV speakers.
Check whether the sound is clear and whether you notice any distortion, cracking or unusual noise.
If the sound is working properly, select Yes.
If you notice any sound-related problem, select No.
Step 5: Perform HDMI Test
Go back to Self Diagnosis.
Select HDMI Test.
Follow the instructions displayed on your TV screen.
Connect an HDMI device, such as a laptop, gaming console or set-top box, if requested.
Check whether the HDMI connection is detected and working properly.
If the HDMI connection works correctly, select Yes.
If the TV does not detect the connected HDMI device or you experience connection problems, select No.
Step 6: Perform Signal Information Test
Open the Self Diagnosis menu again.
Select Signal Information Test.
Your TV will display signal-related information.
Check the available signal information and whether the connected TV signal is stable.
This test is useful for checking signal-related issues, especially when using a compatible TV broadcast connection.
If the signal information looks normal, select Yes.
If you notice any signal-related problem, select No.
Step 7: Perform Wi-Fi and Internet Test
Return to the Self Diagnosis menu.
Select Wi-Fi and Internet Test.
Your Samsung Smart TV will check the network and internet connection.
Wait for the test to complete.
Check whether your TV is properly connected to your Wi-Fi network and the internet.
If everything is working properly, select Yes.
If the Wi-Fi or internet connection is not working correctly, select No.
Step 8: What If Any Test Fails?
If you select No during any of these tests, your Samsung Smart TV may display additional troubleshooting instructions.
Follow the instructions shown on your TV screen to identify and resolve the problem.
For example:
Video Test: Check for display or video-related problems.
Picture Test: Check for screen and picture quality issues.
Sound Test: Check your TV speakers and audio settings.
HDMI Test: Check HDMI cables, connected devices and ports.
Signal Information Test: Check your TV signal connection.
Wi-Fi and Internet Test: Check your router, Wi-Fi connection and internet access.
If the problem continues, contact Samsung Support or an authorised Samsung service centre.
Conclusion
Samsung Smart TV's built-in Self Diagnosis feature makes it easy to test important TV functions without installing any additional applications.
If you are purchasing a new Samsung Smart TV, I strongly recommend performing all these tests before completing your purchase. Test the video, picture, sound, HDMI, signal information and Wi-Fi connections one by one.
This will help you identify potential problems and make a more informed buying decision.
