hello my drones gimbal was damaged. after i ordered that parts yaw arm, flex cable. after installed they are worked but not 100% correctly. yaw arm is angle to left side. and roll motor not worked 100% it worked only small angle only. then i hit some shots to the roll motor and again reinstalled it then ...
camera is live. but the whole gimbal not working. not responding not startup. drone is fully functional. so i think problem is in the gimbal motors or gimbal circuit so how to check my gimbal camera circuit board and motors separately with a multimeter or something. please help me. thank you.

also need to know how to check disassembled gimbal roll,pitch,yaw motors from a multimeter. WORKING OR NOT. PLEASE HELP.

Hi ChamalSB, I'm sorry to read the issue. At present, it is not recommended to repair the unit at your end which may void the warranty. If you need further assistance, I sincerely suggest you start a case and send it in for a fully diagnosis: https://www.dji.com/support Hope for your understanding.

i have no warranty i brought a used phantom 3 pro so please help me anyone for fix this issue

its done by me