No response from the touchscreen - G4 Q&A, Help & Troubleshooting

Since yesterday my moms G4 does not respond to touch. No damage to touchscreen or anything.
I've tried restoring the phone with LGUP but still doesn't register any touches. Looks like its a hardware problem.
Anyone have this, does replacing the screen/digitizer fix this issue?

Related

Touchscreen issues after replacement

The screen on my MyTouch Slide shattered and I ordered and installed a replacement (this is the outer layer/digitizer). No issues there. But now the touchscreen functions are out of whack. It responds but there are dead areas, it scrolls choppily and acts like it needs calibration.
I'm not sure if this is a hardware or a software issue. Nothing but the outer screen was damaged initially (as far as I could tell). I'm wondering if:
This could be a contact problem? If the digitizer wasn't set properly on the LCD, could this be a result? (I disassembled and reassembled the phone after this problem began to try and confirm this but the problem persists)
If the phone needs some kind of software calibration or adjustment? I did a hard reset and wipe after installing, but no improvement.
ROM issue? I am running Cyanogen RC 7.1
LCD broken? Not attractive, but possible.
Any suggestions anyone has would be helpful. This isn't my main phone (and it's probably ready for the Shoebox of Retirement) but I'd like to get it running well before I give up on it.
Thanks!

[Q] HW0002 Touchscreen Problems.

Recently my EVO has stopped responding to touch inputs. It will wake with the power button but sometimes the touchscreen will not respond. Sometime I'll be able to launch an application and then it will stop. Sometimes it will work fine for minutes/hours and then the problem will surface. I've tried multiple ROMs and it doesn't seem to matter what software (AOSP or Sense) the phone is running.
Any ideas?
Sounds like it may be a hardware problem and not a software one. Have you had any problems with the LCD or digitizer?
Tripp-phpBB said:
Sounds like it may be a hardware problem and not a software one. Have you had any problems with the LCD or digitizer?
Click to expand...
Click to collapse
well if its not responding then it is the digitizer. but before you dump a bunch of money into a new digitizer or new phone let me ask u this.
does it only not work while plugged in and charging? because that is kinda a common problem. as long as it works when not plugged in then ur fine.
I haven't specifically tested it to see whether or not being plugged in affects the problem but another symptom is that when it goes on the fritz you can be hitting the back or home area at the bottom and it will register the touch somewhere near the top of the screen.
Does that narrow the possibilities?
Definitely sounds like a screen/digitizer issue.
If you have the protection plan from Sprint, you can take to a repair center and they will replace for you. No charge.
Thanks for the help. My local Sprint store will replace it for $35. So we'll see if that's the issue.
Gotta flash over to stock ROM so they'll work on it though.
EDIT:
Spoke to soon. Technician at the Sprint store won't work on it. They're trying to claim there is water damage when there is none. I guess I'll have to do it myself.

need help - touchscreen fix

noticed that my touchscreen is becoming unresponsive lately so i thought that changing the multitouch might solve it. the thing is, after selecting 4 touch, touchscreen becomes totally unresponsive. i tried wipe and even flashing stock os but touchscreen is still the same.
did i screw up my touch screen? how will i know? any known repairs or fix.
thanks
Sounds like your digitalizer (the glass above the screen) is busted and needs replacement. If your phone is under warranty, claim it, if not - get a new digitalizer and if you can't change it yourself, take it to a repair shop.
Changed the digitizer but still no response
Got a headache? It's all in your head!!!
switch ROM
You said that you flashed back to stock, but how about flashing to another ROM, I mean one that has a completly diferent multitouch enabler... that might work.
kherzad said:
You said that you flashed back to stock, but how about flashing to another ROM, I mean one that has a completly diferent multitouch enabler... that might work.
Click to expand...
Click to collapse
i was able to flash stock and it means i have no root nor recovery. and adb debugging is not enabled. i am out of ideas how i will be able to solve this.
After flashing stock ROM do you face the same issue with a new Digitizer?
yes. doesnt respond to anything except volume and power. even the 4 touch buttons doesn't work. i was thinking that i have received a bad digitizer or it is a motherboard issue. with the latter i have no idea how to check
salingpusa said:
yes. doesnt respond to anything except volume and power. even the 4 touch buttons doesn't work. i was thinking that i have received a bad digitizer or it is a motherboard issue. with the latter i have no idea how to check
Click to expand...
Click to collapse
I had recently taken my Defy to a service center. I just wanted to change the earpiece and the side casing. While replacing the side casing (while removing the Digitizer) they damaged the digitizer. The main touch portion was working but the 4 soft keys were not. They replaced the digitizer and everything was fine again (had to pay for it )
If you can carefully handle the phone, you can open up the casing and try reconnecting the digitizer to the board. (Do not remove the digitizer from the casing only reconnect the cable).
Replacement is better done by a service center as it requires careful handing.
I did open the phone, removed and reconnected the cable, still the same. also tried 2 new digitizer still the same result. I guess it us the mother board . Any ideas where to get replacement board ?
Thanks
Got a headache? It's all in your head!!!
i have got the same problem like you and i have solved it.
Do compass calibration like spin the phone 3 times in flat condition (laying down face up), then have the phone standing up and rotate 3 times, then on one side, rotate 3 times and then move your defy in the shape of number "8" in the air. Re-open the screen. it is suppose to bring back your screen work like it was nothing happened.
only for my defy i've tried never did this for another but from what i see you have nothing to lose here
Tried the calibrating thing and also a new digitizer. doesn't work. So it is the motherboard.
Anyone knows where to get mother board
Got a headache? It's all in your head!!!
Getting a new board is like getting a new phone - new IMEI, price for the board should be very similar to the pricw for a new phone too. If you think about it, it IS the phone. What's there in the phone other than the board a screen and a digitizer...
Guess you're right.
Got a headache? It's all in your head!!!

[Q] LG E980 the touch sometimes work and sometimes don't

Hey guys, my LG E980 At&t started a few days ago, with the failure of the touch. Sometimes does not respond to anything the whole screen, sometimes works great no problems, but if I turn off the screen and back to light again to the same problem and respond only to return keys and menu and volume. Sometimes the screen moves one as if I was pushing, weird stuff. It has never been beaten or has been dropped. Just started doing this problem. The device I've uncovered to check for bad connectors bring assembled or bumps or things like that, but everything seems to be in perfect condition.
I flashed the original rom of att and the telcel rom, thinking it was a software problem, but the result is still the same. My question is if the module's touch is what is damaged and how or why it has been corrupted.

Regarding touchscreen issues;

So my Lg g4 started having touch screen issues (misclicks or detecting no input at all) about last week. I've done a good amount or searching and found out this problem was quite common. However, I haven't seen thing about whether its a digitizer issue or something.
So my question is, if I were to replace the digitizer would it solve the issue? Has anyone done this?

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