“Why is this tcl 55" qm7 series 4k led smart google tv making a hissing sound when in use?”

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• No idea; ours doesn't hiss.

  Answered by JohnP 1 year ago

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• In order for us to better assist, please reach out to us at [email protected] with your contact information and a description of what you need help with. Thank you, TCL Customer Support

  Answered by TCLExpert 1 year ago

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