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Product will not turn on | SoundLink® Bluetooth® speaker III
Check if your speakers powers on while connected to a power outlet.
If the speaker can be powered on when connected to a power outlet but does not power on when disconnected from an outlet and using only battery power, see Product does not power on with battery power.
Reset your product.
Much like rebooting a smartphone, your product might need to be reset on occasion to correct minor issues. For more info, see Resetting your product.
Use only the Bose power supply intended for your product.
It is recommended to use only the Bose power supply included with your product. Using a third party power supply is not recommended. If it is necessary to connect a third party power supply, however, be sure the specs on the power supply match the power requirement found in your product specs.
Check if the connected power outlet is working.
When connected to power, your product plays a tone. If you plug in but don't hear a tone, try plugging in another device (i.e. a lamp) to the same power outlet to confirm the outlet works.
Check if a tone is heard from you product when power is connected.
Disconnect the power connection from your product for a few seconds, then reconnect it. Within a few seconds of connecting power, a tone should play from your product. If a tone is heard but your product won't power on, the issue might be with the connections or controls; if a tone is not heard, the product might not be receiving power or producing sound.
Replace the power supply.
In case there is an issue with the power supply, try replacing it. If you have a safe way to test the power supply and are comfortable doing so, you can check if the power supply is supplying the voltage shown on the power supply label. It is not, replace it..
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