[Q] Screen not turning on after touchscreen test - Nexus 7 (2013) Q&A

A few months ago, I broke the screen on my nexus 7. Recently, I decided to replace the screen. I bought a screen and put it in uneventfully, but I noticed that there was a diagonal stripe on the screen that didn't respond to touch. I knew that nexus 7s have touchscreen issues, so I downloaded the app Nexus 7 II Tester. One of the patterns caused the touchscreen to not return to normal after closing the app, so I restarted the tablet to try to fix it. However, after turning off, the screen would not come back on. The backlight is off. According to getevent from within adb, some touch input is getting through, but when I look at the screen through Android Screen Monitor, the touch input seems to be erratic. Aside from issues with the screen and touchscreen, the device seems to function normally.

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Quick screen 'taps' register as 'drags' after screen replacement

Hi everyone.
I have recently had my screen replaced. After playing around, i quickly noticed that my keyboard screws up when i start typing.
The faster i type, the worse the problem is.
I checked touch response times and achieves normal times of about 60ms, however, i turned on touch overlay in developer settings and noticed that if i touch opposite sides of the screen quickly (to simulate typing), it would draw lines between the touches as if i was dragging between the two points.
This is what causes my keyboard to do funky stuff and heavily lag when typing fast.
Please note that this never happened before the screen replacement, and a hard reset didnt fix the problem.
Is there any software fix for this, or do i need another screen?
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nic_coe said:
Hi everyone.
I have recently had my screen replaced. After playing around, i quickly noticed that my keyboard screws up when i start typing.
The faster i type, the worse the problem is.
I checked touch response times and achieves normal times of about 60ms, however, i turned on touch overlay in developer settings and noticed that if i touch opposite sides of the screen quickly (to simulate typing), it would draw lines between the touches as if i was dragging between the two points.
This is what causes my keyboard to do funky stuff and heavily lag when typing fast.
Please note that this never happened before the screen replacement, and a hard reset didnt fix the problem.
Is there any software fix for this, or do i need another screen?
thanks.
Click to expand...
Click to collapse
I mainly work on iPhones, but it sounds like your digitizer is out of calibration. Don't know if there's a software fix for it, but hopefully this will point you in the right direction. Also I'd take it back to the place you had it repaired and see if they can fix if it's still warrantied.

Black Screen

So my phone has had some tumbles during me using it but outside of some cracks the phone was mostly fine.
Sometimes the touchscreen wouldn't respond properly but locking and unlocking the phone always fixed it.
After waking up and using my phone for about 10 minutes, My phone's screen suddenly went black and it won't show anything anymore.
It's not black as in not turning on, because I can see that the backlight turns on. it just doesn't display anything else.
Can this be fixed by just replacing the screen? or is there any other fix, which i doubt
Same here...?
Did you get it repaired. What was the problem..?
Same issue
Natesvn said:
So my phone has had some tumbles during me using it but outside of some cracks the phone was mostly fine.
Sometimes the touchscreen wouldn't respond properly but locking and unlocking the phone always fixed it.
After waking up and using my phone for about 10 minutes, My phone's screen suddenly went black and it won't show anything anymore.
It's not black as in not turning on, because I can see that the backlight turns on. it just doesn't display anything else.
Can this be fixed by just replacing the screen? or is there any other fix, which i doubt
Click to expand...
Click to collapse
+1
I am facing the same issue of Screen getting black. The sound keeps on coming but the display turns dark. It gets normal after a restart.

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