Aporte original por: Pranav Sarwate ,
I own the same model and initial months i faced the same issue. Later on the speaker occasionally just refused to charge or power on. Some googling and it seems its an issue with the touch panel. Not with the panel itself but the way it has been assembled with improper glue and tape placing. I haven't done it yet won't recommend it, but it you can pop open the touch panel and place it back after cleaning, it might just work. Search for "Sony SRS-X55 touch panel issues".