Good evening, I had some camera issues with black, blue, and white spots in the video. so I replaced the ribbon cable with an OEM DJI cable after completing the repair the camera works but none of the gimbal features work. I can't tilt the camera down and nothing moves during the start-up checks.  Does anyone have some advice for me, please?

Hello there dapperdanner. I am sorry for the trouble this has caused and thank you for reaching out. Since you are experiencing this issue in your DJI Phantom 4. I would recommend for you to contact our DJI Support Team at https://www.dji.com/support?site=brandsite&from=nav for further assistance. We have a team that will do there best to check the said DJI drone and will give out the best resolution for this issue. Just a reminder that DJI do not recommend doing a DIY in fixing the said DJI drone to avoid further damaging the said unit. Again, I am sorry for the trouble and thank you.