Their are things that you can really mess up and make things more tougher to find what is really wrong and to try to fix by your self Or some one else... to see some things in the drones its best to wear magnifying glasses with good lightning and take many good close ups before you start to pull this off and that off...as its very easy to pull a wire connector and break the snap off or crack the printed circuit board and when it comes time to reassemble....YOU are gonna want some pictures from some one here..if you never took your own..... Good Luck and hope that you get back going soon.