On my P4P Pro V1 I get a "No Image Transmission Signal" when I try to adjust the video settings and the screen goes black and the Setting indicators go to NA. And then the gimbal starts yawing slowly back and forth left and right. . It does not record video on the card. It's worked fine for years. The still pictures still work fine. I tried changing frequencies from 2.4 to 5.8 and it did nothing. Any ideas? Thanks.