I changed the riibbon cable because I had no video but I did have complete control of the drone and the camera was centered.  Now the gimble is shaking and will not center.  I have tried different options but still will not center.  Any help would be appreciated

Hi there. Thank you for reaching out and we're sorry for the trouble that this has caused I'm afraid that you may consider sending the unit in for proper diagnostics, you may request a repair service using this link https://www.dji.com/support/repair . Thank you for your understanding and support.