My brothers was flying his tello one day and one of the motors flew off when he crashed landed. So I bought a new motor from amazon and watched a few videos on how to install the new one looked pretty easy. Most of the yt videos recommended soldering the wires into the motherboard but I watched one video claiming I could just clip the old wires and tangle the new stripped wire. Here's the video where I got the idea from
looks pretty simple doesn't involve any soldering and it made sense to me. The motors I purchased were from rc geeks. When I finished wrapping the wires together I put the battery inside to see if it went well and the motor began running on it's own. Even tho the tello wasn't turned on the motor was running on by itself. Only the new motor was doing this the rest were normal. The order comes with four motors so I tried each one they all did the same thing. Thinking that the motor was faulty I ended up returning the product and buying a new one different company. This time the order only came with one motor and the exact same thing happened . So I'm wondering what am I doing wrong. Also want to mention that in the video it looks like they remove two motors maybe the drone works in pair motors not sure but like I said when i had the four motors i tried all the motors and even clipped an extra motor like in the video to see maybe it's like the motors are paired so if one goes bad you have to change the pair together but that didn't work either. It looked really simple and I was hoping on fixing it quickly because my brother literally just bought this drone like a week before the accident and now it's been down for months. If someone could help me I would appreciate it highly thanks