Is the unit plugged into a surge protector?
Make sure that the unit is up to date.
Does this happen on all sources?
Test the HDMI Cable:
Navigate to Settings > Support > Self Diagnosis > Signal Information > HDMI Cable Test > Start Test,
If the test says the cable is bad, replace the cable.
Have you tried to test with a different external device?
-The final thing to rule out is the external device you're using. Try connecting a different device, or using a different source port. If you were unable to test the cable in the previous step, then try swapping the cable, too.
-If the TV can display a picture in any other setup, then you've ruled the TV out as the cause of the issue. Keep trying various setups until you identify the device or cable that is not working, and troubleshoot or replace it.
If you are able to, Navigate to Settings > Support > Self Diagnosis > Picture Test, and then follow the on-screen directions.
If the above troubleshooting steps didn't help, here are some service options:
- If your unit was recently purchased, you can check with your retailer on their return/exchange process.
- If you have an extended warranty you can reach out to them to have service processed.
- If you're within the one year warranty, you can Private message one of our moderators to have service processed
- If you're OUT of warranty, you the following link to locate a service center in your area by using the link below