My Boom 2 won’t respond. Doesn’t make any sounds when pressing bottoms, and Bluetooth doesn’t work. If it’s connected to power and using an aux cord it works. But unless connected to power the speaker won’t turn on or work at all. I checked the condition of the battery and it’s voltage was perfect. Could this problem be to do with the mother board and would replacing it fix these problems. Any advice you have would be brilliant. Thanks