Drone smoked when I plugged in the battery a year ago, now one motor doesn’t work and locks up when I arm. Replaced the motor, no luck
Hi everyone! I’m 15 and I’m not experienced with FPV, so sorry if I’m missing something obvious.
About a year ago I was about to fly my drone. When I plugged in the battery, a bit of smoke came out of the main board. Since that day, one of the motors doesn’t work anymore, and when I arm the drone that motor locks up. I tried replacing it with a brand new motor, but it didn’t fix it.
It’s a pre-assembled FPV drone with an all-in-one board (flight controller and ESC together). I don’t know the exact model. I use a 3S 850 mAh battery, and I also noticed some black, burnt-looking plastic on the battery connectors.
I’d like to try to repair it myself instead of throwing it away. I attached photos of the drone and a short video where you can see me arming it and the motor locking up.
Any help or advice would be really appreciated. Thank you! 🙏
UPDATE: Thanks everyone for the quick and helpful replies! I did some further checks. It’s a single AIO board (not a stack) with a 25.5 x 25.5 mm mounting pattern. I connected it to Betaflight via USB (without a battery), and it’s recognized as a JHEF405PRO. The gyro, barometer, and OSD are all detected correctly, so the flight controller section seems to be working fine. I also noticed a slight deformation on the MOSFET next to the output for the faulty motor; it really looks like that component burned out, just as you suspected.
I’ve looked for this board online, but it’s hard to find. Since I’m a beginner, I think replacing the whole board is the safest bet. Does anyone know of a good, affordable 25.5 x 25.5 AIO board compatible with 3S batteries that I could use as a replacement? Thanks again!