Hi all, I am having the same problem. My son gave me this Mavic, he crashed it and ripped the gimble off, replaced it with a used one, and since then it never focused, the box appears, it bleeps, but does nothing. Another problem was that the lens would fog up in the cold. So, I replaced the camera.... It still won't focus, at least this one doesn't fog up, so not a complete waste of time. I'm fairly sure I heard a motor the first time I powered it up. I'm guessing the gimble controller board is at fault, or maybe a ribbon connector. Anyway, thought I'd share this, and I'll update if I fix it.