Touch screen unresponsive! - Nexus 4 Q&A, Help & Troubleshooting

Hi there! I have a problem with the Touch screen, it's fully unresponsive.
But the problem locates in mainboard, cause when i change mainboard from the other Nexus it fully works.
It was unlocked, rooted, now it's fully stock, thanks!
Any help?

Related

Strange problem with the screen.

Hi to all,
I have strange problem with my Elf. My screen stopped responding and I thought that the problem is the digitizer. Hard reset didn't help. I ordered a new one and changed it. Unfortunately the situation remained the same. So I got the same working phone from a friend and decided to change some parts to find out where the problem is. The result is..
My front panel(with the new and after that with the old digitizer) connected to the working phone - not responding screen.
My phone connected to the working front panel - not responding screen.
I have no idea what to do. If anyone can help. Exclude the warranty.
There is a small battery on the motherboard. Does anyone know its functions?
I have a suggestion that it is something like cmos battery of the PC.
My idea is to remove it for a while and make new hardware initialization.
I am not sure about that.
I doubt that there is something with the touch screen controller(TSC2046). Is there any way to reset it?

Screen suddenly died - Touch HD

Hi.
My screen just suddenly died, but I don't think it's a hardware problem, cause while starting it up I get vibration-response from it when touching the screen, but when PIN is asked the screen just don't work.
Any idea how I can fix this?
Thanks for any help!
No image at all + touch responses working = dead lcd display, but working digitizer. You will require a new screen module to replace it.
stuntdouble said:
No image at all + touch responses working = dead lcd display, but working digitizer. You will require a new screen module to replace it.
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Hi and thanks for answer.
I get image and I get response on the touch until the PIN-code is asked, then the response goes away but the image is still there.
Any idea what might have gone wrong and how to fix it?
Gissan said:
I get image and I get response on the touch until the PIN-code is asked, then the response goes away but the image is still there.
Any idea what might have gone wrong and how to fix it?
Click to expand...
Click to collapse
So you are saying the LCD is working, and the touchscreen is working?
Either your software is jammed or your touch-calibration is way off.
Either way, a hard-reset is the easiest way to resolve your problem.
There is no problem with the "visual screen", I see everything I used to see (so the LCD should be OK). It's just that it won't "recognize" or "answer" when I touch it, after a while.
I start it up, and everything seems OK. When "Windows Mobile 6.1" is shown the phone vibrates when I touch the screen. That means that it recognizes my touch, so the hardware should be OK. But when the PIN-code is asked, there is no feedback in vibration or anything when the screen is touched. The touch is just all dead, and the numbers I press won't come up or anything.
So, I think it's a software fail. I'm running one of Dutty's older ROMs, could that be a problem?
Can I flash it to another ROM with the "dead" touchscreen?
I tried to hard reset it now. Still the same problem, no response on touch.
The question : is it a hardware or a software problem.
Assuming it is a software problem - a hard reset would have solved it (since it worked before)
So the likely problem is the digitizer.
Yeah, it must be the digitizer. Is that something I can change / replace / fix myself, or do I need to send it to repair?
Thanks for help btw!

[Q] touch screen not working

Guys,
today I was about to make a phone call but couldnt unlock the screen. It didnt work at all so I rebooted and now cant enter the SIM lock. It has happened to me before but reflasnihg a different ROM helped. However i now press the screen it doesnt react. Ive tried to reflsh sveral ROMs but no change.
I never dropped the phone or anything like that...
can anyone help please?
I have another kind of problem with the screen. When I tried to replace the screen protector upper layer of the screen comes off (not completely) and then the touch becomes badly misaligned. I tried calibration but never success with error saying invalid calibration point, like that.
so, I think tattoo screen is not robust and prone to problems.
I managed to soleve my problem. I took the phone appart and pushed the digityzer connector (ive replaced digityzer some time ago due to scratches) more into the motherboard and now it works all fine...

Issues after lcd replacement ALE-L21

Hey guys,
I replaced my broken lcd and touch screen with new one. Since then when I boot into recovery the touch is not recognized in the stock recovery and in the twrp recovery it takes about 15 seconds to respond to the touch.
This didn't happened before.
Is this a software or hardware problem?
Thank you.
most likely it`s hardware ,the compatible replacement may doesnt have the same flex configuration or its damaged.
eccos said:
most likely it`s hardware ,the compatible replacement may doesnt have the same flex configuration or its damaged.
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It works fine after system boot up. But sometimes I have to keep touching the screen with one finger and use another to use the touch as usual.

i9505 - Screen replaced, touch not correctly registered on part of the screen

Hi guys,
I destroyed screen recently in my i9505 so I needed to order a replacement. I bought a cheaper version of the screen with frame on aliexpress, took out the mainboard with all components from the broken phone, and it works (almost) fine. I have an issue with touch on bottom left of the screen. Touch is not correctly recognized there - when tapping, touches are recognized within 0.5 cm or so. When swiping though the region, instead of registering a continuous line, like on other parts of the screen, it is broken.
I'm suspecting hardware issue, but want to hear some opinions. Do you think flashing custom rom might work? I'm still using the original.
I'm attaching screenshots.
summerian said:
Hi guys,
I'm suspecting hardware issue, but want to hear some opinions. Do you think flashing custom rom might work? I'm still using the original.
Click to expand...
Click to collapse
Is your screen completely destroyed, or has the glass broken only?
"I'm still using the original." - meaning original (stock) ROM?
it's Display problem. Hand over this display under warranty and buy another.

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