Hope someone can help me...about to loose my mind over this -.- Opened my Phantom 2 and installed the following hardware: - iOSD Mini - FrSky X8R receiver for my Taranis Plus Everything worked fine but then I decided to change some things so I can fit everything inside and not having the receiver and the iOSD hanging around the outside. I moved the gimbal anti interference board inside too, hooked everything back up and now I get the really loud beep and no start up frequency when powering up. Everything works fine: I have my FPV picture on my monitor, also the iOSD overlay, gimbal tilt control works and when I connected to my computer all other controls and even switching in between flight modes or activating the failsafe works with no problem. I just can't arm the motors and the beeps start out as one single beep but are actually 4 which I can hear after some time because they loose sync. My guess is there must be some wire loose, but I checked everything and can't find a loose or broken connection anywhere. Checking continuity is nearly impossible, since all the solder joints are made non conductive with some transparent paint or glue... What could be wrong here?