Signa S2 no sound from Vizio TV

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Had a Signa S2 for 6 months and no problems at all. Watched a movie last night and it worked great. Turned on my tv this morning and the sound bar defaults to Aux input and I'm getting no sound when I change it to TV input. Tried plugging in the optical cable, doing a factory reset, unplugging the tv and bar, no dice. Any tips?

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