Facing TV Problems? Ask a TV Technician.
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An Optical cable is designed to connect the TV to external sound systems. So what do you have plugged into the other end of that Optical cable?
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Well, if you need help- you don't want to use an Optical cable unless you're planning on sending the TV sound out to a soundbar or home theater system. If you're connecting it to say the cable box- then don't do that, simply use a single HDMI cable.
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