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My old one did this but it turned out to be the HDMI port.
Sorry, there was a problem. Please try again later.Hello, This type of issue usually occurs when the power cord is loose or the Monitor isn't receiving proper ventilation. Is the unit's power cord securely plugged-in to both the back of the Monitor and an electrical outlet? Plug the unit securely into an electrical outlet. Please check this troubleshooting steps https://www.lg.com/us/support/help-library/tv-powers-onoff-intermittently-tv-intermittent-power-or-powers-offon-CT32003207-20150907918722#:~:text=This%20type%20of%20issue%20usually,Monitor%20and%20an%20electrical%20outlet%3F&text=Plug%20the%20unit%20securely%20into%20an%20electrical%20outlet.. ^Vanessa
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