One motor not spinning(ESC problem?)

[Jim Schultz]

So I have a CC3D with SunnySky X2212-13 980kv II motors. I have 30A M-30 ESCs with SimonK firmware. My big problem is that motor 4 is not spinning when I try to calibrate it. I had my whole quad set up last night but when I tried it out today, that motor did not work. When I just use my transmitter, it sometimes turns on when I turn the throttle up, but it never does when it is in the center position. The motor works with other ESCs but the ESC does not work with other motors. This leads me to believe that it is an ESC problem, but I still get the beeps when I plug the ESC into the PDB or the CC3D. I also tried putting the ESC in a different ESC port(like ESC 3), but I still got nothing. However, other ESCs worked in ESC 4. I am baffled and do not know what to do. Any thoughts?

 

[Motopreserve]

I'm a little confused by your explanation - but it sounds as if you have tried the bad esc on other outputs and it doesn't work - and other ESCs work if plugged into the output that is giving you issues?

If so, it sounds like the esc may be bad. The best you can do is swap the ESCs and outputs (like described above - so you may have done this already) and see if the issue follows the esc or stays with the output channel.

Some ESCs have issues with particular motors, but most often it's pancake motors with simonk firmware. But make sure you've done the swap test first.