The more I read about issues with new and replaced drones from DJI, I have to ask. Is there any testing and quality control or do they just slap them together and hope for the best?  you would think they would at least test each one for video and normal operation.  with all the fan , video, repair and software problem it might be something they should look in to and if they do have quality control for the product that person or persons may need to be looked at.  

They do have Quality Control, the thing is you will see people go off when they have to complain about something. But for the people with no problems they are enjoying every moment flying their Mavic's. Why would we come spend all day on the Forum when we are out flying and enjoying!

Like all electronics, DJI drones have QC before shipping. But unfortunately, DJI drones also have DOA cases, like any kinds of consumer electronics would do.