Any button on the speaker cannot be operated
The speaker may be in the protect mode if the(power) indicator is flashing in red, none of the buttons can be operated, and the speaker cannot be turned off by the(power)/ PAIRING button.
Push the RESET button on the bottom of the speaker with a pointed object, such as a pin. Then turn on the speaker. If the (power) indicator keeps flashing, consult your nearest Sony dealer or the shop from which you purchased this speaker.