Too many people have had great success with this screen. It must just be me! I ordered one screen, installed a fresh copy of raspian, updated (including rpi-update), tried everything I could find and have had absolutely no luck getting even the slightest glimmer out of the display. I ordered a replacement and tried it today with the same results. Power is wired into the display and out to the Pi. Pi is a Model B v 1.1.
I've 'triple checked' the FPC and DSI cables and ensured I've got a good 5V 2A power source, yet...nothing.
I did notice, however, that I don't have a folder labelled /sys/class/backlight/rpi_backlight/ in my system. (Was going to try and crank the brightness up to make sure it wasn't dimmed for some reason). Any ideas on why that folder might not be present or what else could be going wrong?