“I recently purchase the 70" NS-70DF710NA21 4k TV out of the box it went to upgrade the OS, the TV has volume on just one of the speakers, the right one, the audio jack only provides audio to the right side. I need support on this matter.”
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Try this, go Home > Settings > Device & Software > Reset to Factory Defaults. For product support, please call 1-877-467-4289 available from 8am to 9pm CT daily.
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