repairing beats studio wireless

Hi,

I have a Beats Studio Wireless headphone which worked a few months.

Now all of a sudden it didn't work anymore with my iphone 5S.

In the bluetooth settings on my iphone I tapped the beats studio and chose forget this device.

Than I wanted to re-pair my beats but the bluetooth light doesn't flash nor is it on. It's just off.

I already tried holding down the power button for 10 seconds after which all the light of the gauge went on, followed by a red light, than again all the white lights followed by a red light and than it turned on but the bluetooth light is still off.

I also tried pressing the B-button for 2 seconds but that doesn't seem to work either.

Is my beats broken? When I connect using the cable, it works.

My firmware versions says 1.1.16 and is up to date.

What can I try?

Kind Regards,

Hans