So, I have the same speaker with the same problem regarding the USB charging port (mine has a bad connection, is very loose). I found out how to open the front: you can slid a knife between the hard and soft plastic parts - no screws needed there - and then the front lifts up rather easily. I found a youtube video which is a bit blurry at the beginning but that’s how I got the idea, I hope it works to place a link here: https://www.youtube.com/watch?v=AFuO3JlKOLA Sorry, my English isn’t perfect, don’t know how to describe it better. I haven’t proceeded any further yet. Would be interested in your repairing results/process if you have any :)