On the sound bar I installed it came with an optical cable. I plugged the optical cable into the back of the TV. I then connected the optical cable to the sound bar. When Iturned on the TV and the sound bar I then had to switch the sound bar to "OPT" to let the soundbar know what type of input connection to the soundbar to use for the audio connection. Once I set it to "OPT" it worked just fine.
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