6X Pro Solar - none of the sensors are working

Hi

I've just bought a 6X Pro Solar, and none of the sensors are working.  The ABC doesnt work either - no compass, altitude, barometer readings.  The sensor lights on the back of the watch do not flash either, so I'm guessing this is a faulty unit?

I don't have Heart Rate metrics, Steps, Pulse OX.   

System > About >

GPS: 2.60

WiFi: 2.60

BMX: 0.00

WHR: 0.00

ANT : 4.30

Sensor Hub: 0.00

I've updated the software through Garmin Express, but nothing happens.  I've even downloaded the Beta Sensor Hub and installed it, still nothing.

I've done the factory reset, nothing happens.

I believe that I've tried everything.

Anyone any ideas...or should I be calling Garmin back?
Thanks
Tim