I answered this above already. I'm refering to the black and red wires of the servo go to the servo motor, the other 3 are for the potentiometer inside the servo. The voltage wont really fluctuate much. The amperage would fluctuate if the servo was working.
"Black and red are the power wires for...
Black and red are the power wires for the motor. The other 3 wires are for the potentiometer. The voltage shouldnt fluctuate or at least not much. Unsure if 3.3V is supposed to be the correct amount but its possible. I tried to find specs on 5 wire servos but none of the ones I looked at list...
Take your multimeter and test the receiver port to see if its providing voltage to the servo. If it is then your servo is bad. If its not then your Receiver/ESC combo is bad.