Check the Sound Bar and subwoofer ventilation holes.
Make sure the area around the ventilation holes of the Sound Bar and subwoofer are open and unobstructed. The Sound Bar and subwoofer need to have proper ventilation to keep them from overheating.
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The issue has been resolved.
The Sound Bar or subwoofer may have overheated and triggered the protection circuit.
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The issue has not been resolved.