I can try and help take the Yuneec motor apart I started to but stoped because I decided not to, I think I have the tools to do that though. I have 3 flashes/ vibrate on remote, I replaced 2 35v capacitors on the ECU, I have tested the motor without hooking up the sensor with an independent controller so the motor is fine I think its the hall effect sensor that may not be bad, but may just not be in connection with the ECU. I tried removing the red wire and I'm still getting 3 yellow flashes and vibs. 
