Chosen Solution
i ve replace plenty of 5s ’s lcds, and i have this..one classic lcd replacement became backlight not working animation on lcd worksjust without light , everything else works , lcd checked , i thing the bug was while plunging home button . i dont think i was wrong on screws matching , but i m not sure.. i have touch and itunes sync , i try the update restore option already , i dont see any mark under the screws using microscope.. any idea?
Did you disconnect the battery when you did the screen replacement? You probably blew the backlight circuit, specifically the backlight filter. If you have the right tools, you could probe the backlight circuit to see if that is the problem. (Hopefully you already tried another screen!) If the backlight circuit is blown, this will require a micro-soldering repair.
