Hi @Arley,
Welcome back to our Community Forums. Thank you for your post and I'm sorry to hear that you're experiencing some sound issues with your new TV.
Have you taken a look at your sound settings to see if this helps with your issue?
Please take a look at our TV Faults page to see if this can help resolve this issue.
Keep us updated on how you get on and let us know if you need any further help.
Thanks! 🙂