“How can I attach a Soundbar with RCA plug input? It seems the RCA plugs on the TV are for input only ...no sound output? Unless I am using the wrong settings o the TV - it appears it offers only HDMI output.....”

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• The 55UM6910PUC can be connected to a soundbar using an optical cable or via HDMI ARC. ^CP

  Answered by LG Digital Customer Care 5 years ago

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