Phantom 4 Pro in Otti Mode

[BRPRINCE48]

I had Drone Nerds make repairs on my drone because it was loosing GPS signal , compass reading and going into Atti mode. Drone Nerds replaced the 3 in 1 circuit board . My first attempt of flying the drone after repairs; the done would't take off because in was showing a Otti fault. Contacted Drone Nerds and spoke with the technician that had worked on my drone. Suggested calibrating the compass which I had done before trying to take off. Calibrated compass again while talking to the technician and again the problem wasn't resolved. Had to send the drone back. Any suggestions on what might be going on. The original repair cost was $ 385.00 plus shipping.

 

[oconnb]

My guess is that they probably repaired it with a used board which was probably defective to begin with. I would have recommended that you contact Rob Thunder drone who is all over this forum