I crash my mavic pro and broke the ribbon and signal cable, also one absorption rubber gimbal.
Ordered a whole gimble unit without the camera barrel with both cables in unit. As well ordered a new absorption
vibration board. Replaced all and did imu, gimbal and compass calibration. No camera view and left and right forward
vision sensor error. Try to do calibration in assistance 2 but no red square to calibrate. Restart by reducing the display to 1600-900 and disable
the driver signature in window10. Problem persist please suggest solution.
Wai Tak Wong

Hello and good day Wai Tak Wong. I am sorry to know what happened to your DJI Mavic Mini. Since there was a crash that happened on the said drone. I would recommend you to contact our DJI Support Team at https://www.dji.com/support?site=brandsite&from=nav for us to be able to assist you further. There might be some components of the said drone that are damage during the said incident that needs to be check and fix. We hope to hear from you soon and looking forward to resolve this issue as soon as possible. Thank you.