Chosen Solution
Hi All, Just posting here in one last attempt to get this thing working without buying a new display assembly. My brother used his phone to playfully hit a friend (who was acting dumb) on the stomach. The amount of force the phone supposedly received was probably about the same as dropping it a couple feet onto a carpeted floor. However, after this incident the LCD stopped working. It still played sounds and the capacitive touch buttons still lit up when pressed. At first I thought it was the motherboard, since it was a refurb I had just installed to replace one damaged by rain. I sent the refurb back and bought a new one, but the problem persisted. I’ve visually inspected the cables as best I can, and they seem to be fine. I don’t believe the digitizer is working, since the capacitive touch buttons don’t light up when you touch the screen (they’re supposed to, right?). Also, when I press the power button it doesn’t disable the capacitive touch buttons, which makes me think it’s not shutting off (which is why I originally thought it was a motherboard problem). It seems odd that a light tap, something much less forceful than a drop on a hard surface (even in a case), would have ruined the screen, but maybe it did. Or maybe there was some water that was in the screen and the knock moved it into a critical area. Anybody have any ideas as to what to try before buying a new display assembly? Thanks
Ended up replacing the screen for $70 and it fixed the problem.
There is a posibility that the screen connector came loose but you’re probably going to need a new screen as this is usually caused by the LCD screen being broken.