disconnect all the servo's....

[2005h4]

disconnected all servo's, & main motor and only connection to the main board is tail motor.

If i input throttle, tail motor should spin .... right? If it doesn't spinning or spin stop spin stop, i might have a main board issue?

[JonJet]

Originally Posted by 2005h4

disconnected all servo's, & main motor and only connection to the main board is tail motor.

If i input throttle, tail motor should spin .... right? If it doesn't spinning or spin stop spin stop, i might have a main board issue?

Not necessarily...

When the heli is sitting still, the AS3X tries to compensate to level out...that's why the swash is moving

It has no idea that it's not airborne

As for the tail, if the AS3X detects no need for rotation to counteract the main blades, it stops until it detects the need

The spin stop spin stop could be any number of things...

1) AS3X detects a need to stop the tail rotor
2) The tail motor is bad
3) The wire harness is losing connection

All the above have nothing to do with the board...

4) Bad tail FET on the board
5) Tail FET overheating
6) Deeper board issues

I have had all of the above issues on mCPX BL's...lord knows I have enough of them...but only twice was it a board problem (#3 is the most common)