Hi,
Had my phone a couple of years, no problems, but recently cracked the screen.
Bought three replacement screens and fitted them in phone:
* 1st one touchscreen digitiser worked perfectly all the time but LCD was broken (had lines/artifacts on it) - sent it back.
* 2nd one, same supplier as first, LCD worked, but digitiser works intermittently - it always works immediately after phone reboot, but after the screen locks for the first time, it then has a problem where it registers an input when I'm not giving any, so the screen goes haywire and I can't even enter my pin or restart phone (Have to use red button in sim card bay). Occasionally and randomly when I try it, it sometimes works so I can enter my pin, and then use the phone until the next time the screen locks....but basically phone is rendered unusable, because this is totally random. Sent this one back too.
* 3rd one bought from a different supplier - AFAIK this one is a genuine Sony part (it at least has the Sony logo on it), but have the same digitiser problem as the second. Time has passed to send this back.
Due to the above description I am sure it is not a problem with the phone (1st one digitser worked perfectly & original cracked screen digitser worked for half the screen where it wasn't cracked). I'm also sure it's a software issue, since it works everytime following a phone reset but before the screen is locked. Behaviour seems to be the same at different temperatures. Also inspected the flex connector and ribbon components under microscope at work, and saw no problems.
One think I noticed is that all 3 screens I bought have no insualting backing on the back of the LCD, so the metal back touches the metal shield below - I did not see any screens to buy with the insulating backing - I wondered if this could be affecting the EMC behaviour of the screen (some capacitivie coupling with the digitiser or some type of grounding issue) - but then why would the digitiser of 1st screen work ok, and work for >1hour following a reset but then not after a screen lock?
Tried turning glove mode on/off - no difference in behaviour. Tried using screen while it is not fitted in phone housing (not touching metal shield), same behaviour.
I saw a couple of threads from a while back, but don't know if they are up to date, or if a solution to this problem is now known:
https://forum.xda-developers.com/showthread.php?t=2691849
This one gives a solution, but then says at the top of the thread DON'T TRY THIS FIX, IT IS A HARDWARE ISSUE NOT SOFTWARE.....so I'm worried to try it.
https://forum.xda-developers.com/showthread.php?t=2662457
This one is to adjust the touchscreen sensitivity, but even though I have root access, I get an error message relating to the mount commandwhen trying to copy the edited idc file back to the system\usr\idc directory, "operation not permitted'.
Does anyone know a reliable fix that works? Or how I can get write access to idc folder to try editing the clearpad file? I don't have an SD card for my phone, but not sure it is essential for these methods?
Thanks
Nabla_x said:
Hi,
Does anyone know a reliable fix that works? Or how I can get write access to idc folder to try editing the clearpad file? I don't have an SD card for my phone, but not sure it is essential for these methods?
Thanks
Click to expand...
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Assuming you're on LP 5.1... System rw access is disabled by default, even with root. Flashing dual recovery by NUT is easiest way to get it. Then you should be able to move files in boot or in recovery.
Related
Recently I began to notice a problem with my phone. Whenever I have the keyboard slid out the touch screen is almost non-responsive. So over the past few days I've tried observing what the exact problem is and I think it could be the cable/ribbon that connects the touch screen to the keyboard. I'll have to tilt the screen back and forth before it will actually recognize me touching it. And I've noticed when I rub that ribbon it seems to work. There's also a crease in the ribbon where it folds on it when you close it. I believe this is the problem but I'm not sure and I want any advice/tips I can get. If it is the cable can you order a new one and replace it yourself?
Thanks in advance
Any ideas anyone? I cant get it to half work so I can text and stuff but I have to press it hard and it still wont work at times so something somewhere or another is wrong.
Tripp-phpBB said:
Any ideas anyone? I cant get it to half work so I can text and stuff but I have to press it hard and it still wont work at times so something somewhere or another is wrong.
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Click to collapse
Flash the stock ROM and SPL, and do a warranty exchange. This isn't a device you want to open up unless you really know what you're doing and are certain of the issue. If you really want to give it a go, then just buy a non-functioning unit from eBay to use for parts. They can normally be had for less than $40.
Wow, I cant believe that I finally found someone with the same problem as I have.
At first I thought that it was a software issue and I reloaded the software on my device.
The screen responds to presses with the keyboard in, but extended it doesnt respond and only the external keyboard works.
So to type a nice long sms I would have to start it on my display, flick out the keyboard to carry on and then flick it back in before I could press send or anything.
How frustrating.
But I did a test now and flicking the keyboard out and then slowly slowly pushing it back in I can get to a stage where both the external keyboard and screen responds at the same time again.
Definitely a ribbon problem or something.
Only had this phone for a few months now and if it already doing this then I am not feeling too obtimistic about its future.
Well, time to take it in for a warranty repair. I wonder how much greaf I am in for now.
Time to pull out my awesome trusty Artemis out the cuboard.
Tripp-phpBB said:
If it is the cable can you order a new one and replace it yourself?
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Click to collapse
I had a friend that had this problem with his TP2 which I've successfully repaired. First thing if you want to do it yourself, go to youtube and look for the Rhodium disassembly video (this will help you a lot). It is not difficult to change any parts in the phone provided that you proceed with caution and take the necessary precautions.
If you are afraid or have never opened up a phone to fix parts, then I would suggest to send it to HTC - this would be devastating if you managed to break up the motherboard by mistake or any other parts in the process of fixing the flex cable.
Tripp --
Did you ever find resolution to your problem? Recently my phone started having the same problem, which I originally thought was related to messing up the calibration file when I put loaded xdandroid GBX0A.
However, it sounds like my problem is pretty similar to yours -- touchscreen works fine when the keyboard is closed, but when it is open it only registers on the bottom of the screen -- which is actually useful in some sense because I can still hit the soft keys in the messaging app and such, but not so useful if you want to scroll using the touch screen. If I play around with the z-hinge a bit, sometimes it starts working -- which sounds like the same thing that you described.
Sorry, I just seen your post but I never fixed mine as I went ahead and bought another phone (Evo) but I did research the problem quite extensively and the problem I believe lies in the ribbon that connects the two halves of the phone. If I remember correctly the motherboard is in the side with the keyboard and that's why when it's slide out, the touch screen won't respond correctly. You can find the part online and replace it yourself. I've taken mine apart and it's not that hard but as said, you need the right tools and to be very careful.
Hi guys
I have tried all the above
Last resort is i got sprite backyup to work
BUT HOW THE HELL DO YOU HIT "NEXT" OR "OK" FROM THE KEYBOARD AS SCREEN DOESNT WORK????
I received a phone that the lower part of the Digi was non responsive. So i ordered a new LCD/Digi part and installed it. After first installing the part the Digi was not functional at all on the new screen. So I figured that the part was just dysfunctional and i would send it back.
But I was curious and did some other tests. I put the old screen back on and it partially worked. Then without powering down the note 2 i switched the screens. Now the part i ordered worked perfectly! The home buttons even started working(they didn't work with the other screen).
So i think i have solved the problem, WRONG, i then took the battery out to insert sim car and finish closing up the device. When i put the battery back in to restart the old screen was back to malfunctioning. Also the home buttons stopped working.
Is this an internal problem or is it just a bad LCD/Digi?
Thanks
RH1n0
Rfedako86 said:
I received a phone that the lower part of the Digi was non responsive. So i ordered a new LCD/Digi part and installed it. After first installing the part the Digi was not functional at all on the new screen. So I figured that the part was just dysfunctional and i would send it back.
But I was curious and did some other tests. I put the old screen back on and it partially worked. Then without powering down the note 2 i switched the screens. Now the part i ordered worked perfectly! The home buttons even started working(they didn't work with the other screen).
So i think i have solved the problem, WRONG, i then took the battery out to insert sim car and finish closing up the device. When i put the battery back in to restart the old screen was back to malfunctioning. Also the home buttons stopped working.
Is this an internal problem or is it just a bad LCD/Digi?
Thanks
RH1n0
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Click to collapse
I am not sure but i think its an internal problem i think its a ram problem.
Maybe
[email protected] said:
I am not sure but i think its an internal problem i think its a ram problem.
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Click to collapse
I thought so too. But then why does the other screen partially work? And if it is a RAM problem how would i go about fixing this issue?
thanks,Rh1n0
Hello there
Im hoping that someone here can help me since im ready to seel the pho for spare parts... i've tried it all.
Heres the deal:
- The phone boots well and if i connect it through usb to the computer i can even access the folders and all.
- I can take photos (i her the sound of the shutter and all and see the piics taken in the folder when connected to the computer) and screnshots
- I managed to restore the phone back to original settings and even update software with sony official soft.
- Inicialy i bought the phone as faulty to try and fix it since the buyer informed me there was no water damage ( and i can confirm this because the "stickers" only show white). He informed that the phone just stoped showing image on screen.
- I thought it was a problem with the LCd so i bought a new one and replace it. The problem persists. Everything works but the screen.
Any toughts on this one? Could the motherboard be faulty in only one place (image, proximity sensor, etc)?
Thanks for you time
Regards
Try the service manuals...
edinacio said:
Hello there
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Click to collapse
I have fully same faulty 2nd "spare parts" phone.
All works except screen, all as you described.
I checked, in my case problem definitely in screen because if connect main board to really working LCD panel = screen ok.
And vice versa: if connect normal main board to this probably faulty screen = black screen.
Maybe here broken flexible connector.
Also nothing interesting related to this case in service documents.
Hi everyone,
So I've had my LG G3 for about 3 months now. As of this morning, a particularly bad case of flickering set in on it, with the screen overwriting other parts with transparent versions of other sections of the screen. I've tried restarting the phone, pulling the battery with the phone on and off, removing and replacing the SIM card and SD card, etc. to no avail. This is particularly mild compared to earlier; before, it would "scan" a single line across the entire screen, fade to a solid black screen, or other major errors. The touchscreen and all physical controls still work, and as far as I can tell only the battery is a problem. I'm likely to be sending it in for tech support, but if between now and Monday I can find a fix, that'd be greatly appreciated. I've transferred my SIM card back to my original phone (a near broken Razr Maxx), and since restarting after that, the issue has almost completely gone away.
I have a recorded video of the problem, but I'm unable to post due to the link restriction on new accounts.
Any ideas?
Recently i have replaced my touch screen folder. But after that everything was working fine but after encryption, the problem of tap anything on screen with two fingers arises.
In the bootup of the phone, when I enter my encryption key for the storage, I don't have this problem at all. So it must be a software problem. It only shows up inside roms after encryption (every rom).
i have also encrypted before screen replacement but none of this issue happened.
anyone plz help me with this issue
or send me anything to activate fingerprint without encryption on Oreo roms
Similar issue here and I saw that a lot of people encounter issue with touchscreen responsiveness after having changed their screen.
Here are my symptoms :
Most of the time, if screen is left idle for a few seconds (still lit), it needs to be woke up by 2 fingers or a large finger (thumb) of a 2 or 3 single finger taps before being fully responsive again...
The phone stays responsive as long as it is used.
Problem DOES NOT occur in recovery. So it is software related I guess...
I read all comments linked to the screen I bought on Aliexpress (screen was tagged as Original, I could not find any difference having both screen in hands, so it clearly is from the same factory)
One comment stated to do a factory reset if the touch screen was laggy...
But maybe this factory reset must be done on stock rom ?
I also wondered if a kernel could have some specific option regarding touchscreen behavior that could help...