My Parrot MKi9100 handsfree kit died the other day.

It doesn't power up at all, there is nothing on the display and the phone doesn't connect. I've checked the power feeds and they're OK.  It seems the "Blue Box" or the main control box has died.

Does anyone on here have any experience with these?  Is there a common problem with an easy fix?  I read on another forum that these control boxes can be fault prone.

If I need to buy another box where can I get one?

Thanks in advance for any help.