Mikrokopter Stuttering Motor

[Droider]

OK built everything back up and got to testing motors. Had to reverse a couple in the BL control panel of the MK tool. Got everything sorted and was just going through the set up one more time to make sure everything was ok and this started happening on one of the motors..

I have tried another motor and the same thing happens so I am guessing its the BL.. Any comments appreciated before I strip out the BL..

Dave

 

[Crash]

I think a FET is shorted. Is this a new one?

 

[Droider]

Shorted.. you mean solder from another fet? or just knackard? No its a used one

 

[Crash]

I'm thinking the hot one is internally shorted but I'm not an EE. It's obvious that you have a motor phase that isn't switching.

Did you check everything very closely for stray motor wires, solder blobs and debris?