I went to start up one day and lost LED/motor on one arm. Thought it was an ESC/motor, so ordered both and took the thing apart to find this... Now, having never soldered a thing in my life, I was apprehensive about changing out the ESC/motor...now I'm worried about messing up the whole board! My fear is warranted by a previous repeater mod experience where the only "mod" I accomplished was breaking the repeater. Any tips on how to go about this (the more dumbed down the better), would be much appreciated!!!