Screen goes black but still turned on...
I've replaced my Atrix HD twice now under warranty for the same issue. This is my third Atrix HD. This last time, it was a few weeks out of warranty before it started up again, so AT&T would not replace it. Wonderful.
I love the Atrix HD, with the exception of the horrible squealing during video and audio recordings that I have yet to figure out, and the screen flaking out on me. I would have the phone for a few months completely without issue, then it would start acting up. The screen would turn off randomly, or so I thought at first. I've had this problem so much, I've worked out how to make it happen and to temporarily fix it.
If I sort of flex my phone back from the top left corner to the bottom right corner, the screen will stay on and work. However, if I flex it between the bottom left and top right corner, the screen goes off pretty much immediately, and since this issue has been exactly the same on the last 3 phones I've had, it makes me wonder if this is a manufacturer defect or something. The screen is black, but still reacts normally to touch (I can hear and feel the unlock screen, or if I pull up a piano app I can still play it, still shows when connected via HDMI, etc.
I'm pretty gentle with my phone, especially since the last two times I've had to replace it. I've never dropped it, even on carpet. I don't have a case or anything and I keep it in my pocket, but it stays in pristine condition. I don't even load a lot of apps on it.
I'm not sure what to do. It's obviously a hardware issue. I've opened it up and reseated the ribbon cables to no effect. I'm not really sure what else to check, but I had reservations about messing with the LCD/Digitizer too much. I don't want to break it and have no phone at all! Anyone else have this issue before? Any advice?
Thanks in advance,
P.S. I'm in IT, so I'm comfortable taking things apart and troubleshooting. I've just done all I can think to do aside form replacing the LCD.