Tello drone support

I have a few of my Tello Drones that are acting up ( not running programs, motor not functioning properly causing the drone to not fly, etc) Is it worth sending them in to see if they can be repaired, or would it be easier to just purchase new? If so, are the tello drones still the way to go for Droneblocks?

Have you been able to connect and see the video feed? Also, see if you can learn anything by connecting with the Tello app. Assuming you can see video and no errors you can replace the motors yourself. It does take a bit of patience. You can watch a video here:

Let us know what you decide to do.