Additional info...The red light is coming from the gimbal, startup lights on the drone are ok. The one gimbal/camera that I had was working except I had to constantly readjust the horizon POT, so I got another gimbal/camera from a coworker (It was getting the 3 beeps and red light) and was going to swap parts to get a good working one. In the process of replacing new ribbon cables on both, now both gimbal/camera are getting the 3 beeps and red light on the gimbal. I've tried all the upgrades/calibrations from the Phantom Assistant software and not helping. Do you think they are just both no good now? I'm at a loss of what to try next.