My iPhone®/iPod® is playing but there is no audio coming through my system.
If you’ve just completed an operating system update on your iPod® or iPhone®, you may need to wait several minutes before using it with your SoundDock® system. In some cases, even though you’ve completed the operating system update, some of the apps on your Apple® device may require additional time to finish updating. Undock your Apple® device from the SoundDock® system for several minutes, then re-dock it. Make sure it’s properly seated on the connector
If your iPod® or iPhone® is in a case or protective sleeve, it may not seat properly on the connector. Removing the case or sleeve will allow the device to fit properly on the lightning connector
Try resetting the iPod® or iPhone®. The device may have malfunctioned and might need to be reset. Refer to Apple® support for further assistance
Move the system to another wall outlet. The wall outlet you’re using may be the source of the problem
Reset your SoundDock® system. Turn the system off and unplug it from the power for 60 seconds. Once you have reconnected the system to the power, try your iPod® or iPhone® again