After a crash, i have replaced the board, the receiver and the gps module.

All seems now to work fine. The led signals are fine (as they should), i get 9-10 satellites, the calibration of the compass is fine, all is perfect. There is no error on the assistant, but the motors will not power up.

No matter what i do the motors will not start up.
Help please

I think you plugged the GPS into the wrong spot.  I disconnected mine to do the shield upgrade and did exactly that and it would not start. I had to open the shell and check.  The GPS plugs into the back of the Phantom as you have the battery toward you.  Just to the right of the white plugs on the very edge of the board..  If you look closely, the plug in point is labeled GPS.

Gerry1124 Posted at 2014-12-21 06:42
I think you plugged the GPS into the wrong spot.  I disconnected mine to do the shield upgrade and d ...

I did a compass calibration, i receive 9-1o satellites (seen this trough my iOSD) all the light signals i get are correct as per the manual. The motors will not power up. And i am not located near an airport or something.

georgeh@gizet.c Posted at 2014-12-21 16:46
I did a compass calibration, i receive 9-1o satellites (seen this trough my iOSD) all the light si ...

Do you get any messages on your screen when you turn on the Phantom battery?

No, no messages whatsoever if you mean with the Assistant.

Gerry1124 Posted at 2014-12-21 16:53
Do you get any messages on your screen when you turn on the Phantom battery?

I checked the unit with both batteries i have, its the same thing.

georgeh@gizet.c Posted at 2014-12-21 17:09
No, no messages whatsoever if you mean with the Assistant.

On your iosd like" not intelligent battery"  or error message.  Did you check inside to see if all the connections are firmly in place?

On my iOSD there is nothing up normal. Battery is ok.

Does the software have the correct reflection when you move the RC sticks? what's more, the motor will not start when the drone is linked to PC.

I'm having the same problem.  Every thing looks normal but no motors.

Did you turn on the battery?