Thank You everyone. This is the advanced model. Since I put this post up I checked for solution on YouTube. Someone there fixed it by removing SD card. Turning on, transmission signal was back. Then He put card back in & reformatted card. Interestingly, I attempted this, did get transmission signal back, which went once SD card was reinstalled. I tried to reformat, but it said no SD card there. I tried another, with same outcome. I then successfully played Videos off of first SD card that initially caused the problem. On My iPad with an adapter. Which suggests it isn't corrupted. I will try Your other suggestions later. Thanks everyone. [emoji106]