I had similar problem with DJI, I bought my P3P for Xmas in 2015 and the camera was way out of wacky, all I could get were blurry photos from it. I sent to to DJI and FedEx took a week to get it to CA from MA. DJI got it on Monday, checked it in on Tuesday, repaired it on Wednesday and had it shipped on Thursday and then another week waiting for FedEx. Tried the P3P which had a new S/N on the camera and guess what every bit as bad as the original camera. I was not happy! Contacted DJI and told them while I appreciated the quick turnaround I would have liked it better if someone had actually tested the camera! So I had send it back AGAIN and this time it was in and out in two days with usual 1 week each way via FedEx. I got it back last week and they gave a brand new P3P and controller, tested it this weekend and wow the photos are pretty sharp before I do anytjing with them in Photoshop.