Ok, this is probably the dumbest question of the year but.....how do I get these to work??  Opened the box, charged the goggles fully using the charger supplied.  Pressing the on button shows four green lights.  The lights go out after about four seconds.  Re-pressing the on button repeats that sequence.  Press and hold for about 6 seconds and the lights go off. Nothing on the screens or with any menu or function button press.  Tried a micro SD card in the slot, tried a working HDMI source, nothing.  Any suggestions please?

Sigh, I managed to switch them on.  Great goggles, serious operator issues - sorry everyone.  (hides in shame)

Rogerstephens, no worries, everyone has their first time, please keep us updated if there is any further problem.