I bought an 8" HDMI monitor. I have 6 Shakes/Booms huddle testing here at home. But when I plug either my 55" TV or the 8" monitor in to any of them, they always say “no input”. So is HDMI output turned off by default? Or is it the case that the HDMI has to be already connected when the Pi board is booting up?
I hate just pulling the power on the Shakes, as I understand this can damage the microSD cards. Can it damage the boards too?