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Sound and video out of sync | 3·2·1® Series III system
Try playing something else to check if the issue is related to certain media.
Play different content on your system (i.e. a different channel or DVR recording) to determine if the issue is related the content.
Reset your product.
Much like rebooting a smartphone, your product might need to be reset on occasion to correct minor issues. For more information, see Resetting your product.
Try adjusting the Audio Delay setting for your Bose system.
The Audio Delay setting lets you delay the sound you hear from your system to compensate for video sync issues. For more info, see Setting Audio Delay.
Try a different app.
If the issue only occurs with a particular app, it is likely related to the app or app settings.
Plug in to a different input on the TV.
Plug in to a different input section on the back of the TV using the same cable(s) to determine if the input is the issue. Whichever section you connect to, select the same input using the TV or remote control buttons to hear and/or see the device (e.g. if you connect to HDMI 3, select HDMI 3 using the TV or remote buttons).
Bypass the Bose system.
If the external device has S-video or composite output connections, use either one to connect the device directly to the TV. If this does not solve the problem, the issue is with the external device. Contact the manufacturer of the external device.
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