Well, I have a virtually-unused SBC HC8522 wireless headphones that, after 8 or 9 years since they were bought I have decided to start using. The problem is that, while the charge led of the transmitter comes on when I recharge the batteries, the power led never comes on...consequently, I don´t get any sound from the desired source (but I do get sound from unknown sources). I think I´m plugging everything correctly. Any help would be appreciated. Thanks.