Try resetting the Sound Bar.
If the sound increases automatically, try resetting the Sound Bar. For details, refer to the How to reset the Sound Bar article.
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The issue has been resolved
NOTE: If the reset resolves the issue, the problem was caused by the Sound Bar being in Demo mode.
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The issue has not been resolved
Warranty Information
For information on Sony warranties
Contact support
Contact your Sony Support team
Support by Sony (Mobile App)
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