Hi,

Have you tried pressing the reset button located on the back of the unit?

(Here is a link to the Ifixit troubleshooting guide for your speaker that states where to find the reset button Braven BRV-1s Troubleshooting )

If resetting the unit doesn't work, given that you state that it is only a couple of months old, I suggest that you verify that the warranty period is still valid, (12 months from date of purchase), then consult the warranty documentation that came with the unit, as to what you have to to make a claim for a warranty repair or replacement. (go to the manufacturer's website if you can't find it and search for warranty),