Hi i have the same problem with my E3.5 BT, which I have just brought use it twice and now no power, its disappointing that so many people have complained about this similar problem, which appears to be a manufacturing problem on the power switch, it a waste of money and when trying to submit a ticket, it states that I need to activate even when I have registered.
if anyone can help please let me know
very very disappointing, I would never recommend it to anyone