My HDMI 8" LCD Screen Kit arrived today. I have followed all the instructions correctly as far as connecting the wires but once connected to my Raspberry pi and powered up not a lot happens.
A blue screen appears for a few seconds and then the screen goes blank like it isn’t switched on. If I press a button on the control board the blue screen reappears for a few seconds before going blank again.
I’ve too had the same experience. When I plug this into a Pi2 (running Pixel) I get a few seconds of blue screen then nothing. When I move the SD card, HDMI and USB power to a new Pi3 it works as expected.
I’ve also got another of these screens running from a Pi1.2B (Picade) without problems.
Stealing the thread. I have two LCD’s and connected them as in tutorial (to Rpi 3), but all I get is a bit of blinking once every few seconds and that is it. It doesn’t show start screen and I added hdmi_force_hotplug=1 to config.txt
Use an official 5V 2.5A power supply, 1A is about adequate to power just the Pi itself- bearing in mind that power supplies - cheap ones in particular - don’t always deliver the amperage/voltage they claim.