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Blank screen after timeout, cap. buttons lit
I have an LG Optimus G E970 on the AT&T network, all stock. I recently dropped it and, of course, the digitizer glass cracked. The screen still worked just fine, and I could turn it on and off without a problem but no touch at all. As I was trying to shut it down without using any buttons by just holding the power button, it started acting strangely. I would turn it off (screen timeout) by just pressing on the power button, but when I would wake it up (by again pressing the power button) the cap. buttons on the bottom would light up, but the screen would stay dark. I chalked it up to the digitizer being messed up.
I have since installed a new screen/digitizer assembly, and it works great when I turn on the phone. However, as soon as the screen goes to sleep, I get the same problem - cap. buttons light up, but the screen stays black. All the buttons are working, as I can here them clicking, and I can turn up the volume, etc, I just can't get the screen itself to light up.
Has anyone run across this problem, or have any suggestions? I've already, reluctantly, tried a hard reset, which did not solve the problem, as well as any other little fixes that I found in this and other forums. I'm thinking it's a software issue of some sort, since the screen and everything work great when the phone is on, but I don't really know. I wanted to see is there were any answers out here before I tried rooting and installing a new ROM, which might be problematic anyways if the screen doesn't come back on.