My phantom does not take off

[scitp]

When I push the levers down to put the engine on, it nothing happens, only the bottom red lights flash once.
On my tablet, no indication, everything seems ok, I have 8 satellites, the return picture etc etc.

 

[Meled63]

Make sure you're pushing down AND towards the middle?

 

[johan]

Standard trouble shooting questions:
When did it last work?
What changed between then and now?

 

[daveth1956]

had a similar issue a few weeks ago, advanced calibration seemed to sort it out, took a few attempts to calibrate successfully but it worked. I think the software upgrade was part of the issue (3.12) but all works very well now

 

[CityZen]

Are the lights flashing yellow and then they flash red when you try to arm? That usually means something (GPS or compass) is disconnected.