Hello,
Thank you for posting in Q&A forum.
To further troubleshoot this issue, please kindly try below steps:
1.Check if the HDMI cable is connected well with both sides.
2.Check if the resolution setting is configured well and adaptable to the TV.
3.Ensure that the firmware is updated which might cause this issue.
I hope the information above is helpful.
If you have any questions or concerns, please feel free to let us know.
Best regards,
Jill Zhou
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