have a used one for $400...u can prob get $200 for your drone as is on ebay pm if interested
dji if I had to guess is going to just replace it w/ a refurb or a repaired one being this is not really an economical repair. Labor w/ a certified tech is about 1.5 to 2 hrs + parts. This repair entails:
remove top cover, the glued decorative cover (pain), unscrew the gimbal connector, front vision sensor, rear vison sensor and than the main board also need to desolder all the motors & only than can u remove the esc. When done now you need to do the reverse. So the labor + parts not worth it as a used one runs the same or even less especially if you get $ for the drone as is.
I did once have a client whos
ma dropped 1000ft from a skyscraper (he was @ 1000 feet from his balcony and launched it when the drone has a 400ft limit) thing needed everything replaced (arms gimbal esc all of the above) yet he refused to buy a used one only wanted his drone repaired even after the fact the cost w/ parts & labor far exceeds the amount of a used one. To each his own but I understand the emotional attachment we have for our beloved toys no matter how messed up they may be.