[Q] LGE Nexus 4 new LCD touch not works - Android Q&A, Help & Troubleshooting

My phone's LCD was broken, and I wanted to change it. I ordered a new LCD with assembly and connected phone to this one (changed old front with this one). First of them worked well, but was broken after one month, I was my fault. But it already works, touch works very good. In second and third one, after installing touch not worked. But I put it some minutes, then it started recognizing touches. Worked for more than a week, and yesterday night my phone turned off because of battery. Today I charged it, turned on and now touch not works again. When I press to screen hardly or press in somewhere from the back it recognizes touches. What can be problem? I searched about it but all results were about problems with broken glass, but my problem is different.
Thanks...

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[Q] [HELP] Xperia Mini Pro Broken Screen

Hello! So my Xperia Mini pro has been broken, it doesn't show any image anymore, I think there is a problem with the screen but I want a confirmation or recommendation to find out what the problem is.
First the screen "touch" capability stopped working, and then two weeks after that, the back and option buttons stopped working too. And a week after that ,there was like a screen "flickering" (I tried to recreate the problem in the attached image) when I tried to either open or close the slider.
Finally the screen stopped working anymore. I tried to connect the phone to the PC but says that windows cannot recognize the hardware. And there's one more thing: I can turn on the phone, it vibrates, but the keyboard lights seems that are not working, they are permanently off.. and when I try to Increase the volume it doesn't sound either... There is only the black screen and a backlight.
Please Help me to find out what is the problem, I'm thinking to buy a screen replacement on eBay, but some people told me that is the "flex" cable. I'm not sure if there is a fix for my phone's problem.
Thanks!
Hey there.
Based on my experience, yes, your problem is most likey a flex ribbon issue. Your flex has been ripping apart lately, causing many of its wires to break. This can cause a lot of unpredictable problems, such as a misbeheaving notification LED, inactive ambient light sensor, or "dead" display/touch digitizer. Your problems have gotten worse over time, which is clearly a symptom of a broken flex.
You phone is no longer booting up to android because the kernel no longer detects a proper "response" from the display driver and halts the bootup. This is why you can feel the phone vibrating when pressing the power button, but nothing else happens. Your screen assembly is fine, I can assure you that, unless your glass is broken, of course.
Here's one hell of a good teardown guide: http://www.ifixit.com/Teardown/Sony+Ericsson+Xperia+Mini+Pro+SK17i+Teardown/7275
I used that very same guide when I repaired my own xmp. I regret messing with my screen assembly because I destroyed it and had to buy a new one, which is costly
Thank You so much for the advice ! Now I'll try to repair it, It doesn't seem too difficult. Thank You Again!!!

Sensor/s not working after screen replacement

Hello,
Leading up to this problem I had this awful screen issue (screen burn in) way before I did all that and ordered it to get it fixed.
When it finally came (in amazing condition) I replaced the old screen for the new one very carefully and booted it to power it on and it works just fine.
But issues popped up.
Double tap to wake would not work, and wave to wake up wouldn't either and now when I get a call the phone is stuck on a black screen.
Oddly auto screen brightness works just fine so I am thinking the new panel is causing the issue.
Solved!
There is a rubber gasket that eliminates light interference between the two sensors. When it is placed correctly the sensors would work just fine.
Sadly I did not know that the gasket was needed to be removed from the old frame to the new one. (it's not mentioned in most disassembly repair videos)
Sensor issue after screen replacement
I just replaced my screen on the same phone, and I'm having the same issue, before I open if up again, where's that located to be precisely? Just to know what I'm looking for. Thanks so much in advance

Touchscreen ghost touches(screen flickering)

Hey guys, recently I had my Z2 sent to a service shop because it wasn't turning on or charging. The guy at the shop said that it was the battery fault and he changed it, but he also told me that the screen was not working( flickering, ghost touches, unable to work on it). So he put my old battery on and when I went home the phone actually turned on and booted up, but still I had the screen problem. So whenever I touch the screen it doesn't respond and it touches by itself. Tried putting it on rice for 20 hours, dried with a hairdryer and assembled dissamssebled the screen jacks, still the problems wasn't fix. Do I really need to change the whole LCD or is this a problem that can be fixed?
Shawiee said:
Hey guys, recently I had my Z2 sent to a service shop because it wasn't turning on or charging. The guy at the shop said that it was the battery fault and he changed it, but he also told me that the screen was not working( flickering, ghost touches, unable to work on it). So he put my old battery on and when I went home the phone actually turned on and booted up, but still I had the screen problem. So whenever I touch the screen it doesn't respond and it touches by itself. Tried putting it on rice for 20 hours, dried with a hairdryer and assembled dissamssebled the screen jacks, still the problems wasn't fix. Do I really need to change the whole LCD or is this a problem that can be fixed?
Click to expand...
Click to collapse
Yes, you have to change the screen, or more precisely, the digitializer.
But since the LCD and the digitialier come in one-piece, you have to change it as a whole, but at a much lower price, as your screen can be sold again and recycle the good LCD panel.
iXaidyiu said:
Yes, you have to change the screen, or more precisely, the digitializer.
But since the LCD and the digitialier come in one-piece, you have to change it as a whole, but at a much lower price, as your screen can be sold again and recycle the good LCD panel.
Click to expand...
Click to collapse
So replacing the LCD would fix the problem right? That's great then because I found an LCD with a very low price (20$), completely new on ebay and I sucessfuly dissassembled the old LCD out of the phone. I'm gonna buy it as soon as possible. Thanks man.

Replacement screen issue :|

I wanted to run my cracked screen phone as an emergency phone, so I purchased the whole front and this is the situation:
VIDEO
Every time I start the phone with the old display and then while it's working I replace it with a new one, it works fine until I restart it. Conversely, it works the same, every time I start the phone with a new display, the halves of the screen are swapped until I restart the phone with the old display.
hello. looks like the controller ic is broken.

Touch does not work when changing screen

Hello good. I changed the screen yesterday because it was a little broken and it turns out that I put the new one and it looks perfectly but the touch does not work. As much as I have tried nothing. I have changed the cable that goes from the motherboard to the screen and nothing. I put another screen that I had that looked bad but it worked perfectly and the same thing happens, the touch does not work. What do you think it may be? Am I going to change the rom to see if it can be that?

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