I'm at my wits end. I've tried everything. Been working on this dang thing for 2 days. I know my video Tx works fine, as I can plug a usb into the gopro and get video out of that. So it's not my FPV setup. Iv'e switched the AV cables coming out of the GCU to my Tx, I've switched GCU's, (bought two gimbals just in case) I even switched out the gimbal itself. It worked for a second with both gimbals, then after closing phantom up, all I get is a black screen on the goggles. Any idea what could be wrong? I have an actual job with this rig tomorrow and my client is relying on the FPV...I'm thinking of just hooking up the USB to at LEAST get a video feed that way. Any help is appreciated. Thanks!