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Information regarding turning off the TV power off/on sound can be found in the User Guide under Tour List of Settings> Accessibility>TV power sound. https://www.lg.com/us/support/product/lg-50UM7300PUA.AUS ^CP
Sorry, there was a problem. Please try again later.There are no irritating chimes, so the answer to your question is “no,” there is no way to disable them.
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