If one of the motors isn't working well, please do a quick motor test as the video. Video of motor test: https://youtu.be/XZOZiAc_SQ0
(This test is a must and it's helpful, you must to turn off the skateboard when you are ready to do this test)
Please record the performance of the motor during the test, and send us videos of motor performance before and after swapping
Please send us videos of motor performance before and after swapping
( We need these videos as proof )
After swapping the cable, we will have three results,
1. same motor not work
You need a new motor.
2. another motor not work
You need a new ESC.
3. Two motors both not working
Please check the cable, it is not connected in the right way.