skyfly

Hi! I'm buying a used Flysky i6x with an FS-iA6B receiver. I need to test every channel, but I only have one servo, two 18650 li-ion batteries with a holder (7.3V), and a 5V power bank with two wires coming out of it. I don't have an ESC or any fancy connectors (other than female-female...

I've got a quad copter built with Dji naza m lite and 30 amp esc and a sky fly transmitter. When i arm the motors one of them just turns on constantly and the other three motors turn on at different times when i throttle up. Can anyone help??