I get a black monitor screen when I connect my P2V+ to my Samsung G5 now, after working fine for almost 9 months. I can usually get the screen to appear after rebooting the main battery on the quadcopter 2 or 3 times. The camera monitor will finally become visible by the 3rd try and it will remain stable through 3 back-to-back flights and battery changes. But the next time I fly it I have to go through the same procedure again to get a view screen. I recently had the wifi extender replaced under warranty. This was happening even before they replaced it and it continues after replacement. It also happens with both the DJI controller and the Litchi controller, so it's not a software issue. Any suggestions?