Hi,
I have been working on this problem for a few days. I have a orangepi plus2e and orange pi 5'' lcd. When I make all the connections and give power to the orangepi, I can not see anything on the LCD. At first only a white light comes out. Later on, I looked at the 5 inch screen produced by OrangePi with 640x480 resolution and the LCD settings on the H3 boards. I tried to set the resolution with the h3disp command, but I did not see the proper resolution. I did these on a different computer screen, and when I changed the resolution, nothing appeared on this screen.