I would check the cable, if it's possible that you have an extra cable I would switch them out and see if that solves the issue.
If not, take the player and try to plug it in a different TV and see if the player works on TV.
If the player works, and the cables are fine the issue is with the TV. I would see if you can't do a factory reset on the TV. This usually solves any issues that came about the TV, the only downside is logging back into Netflix, YouTube, and other apps.
If this also doesn't solve the issue, then I would reach out to the TV manufacturers and find out what steps you can take to fix it and Google some troubleshooting tips.