Hey Guys,
I am having a big problem with my device. The touch is not working. I have been flashing various roms on my phone and after playing with many roms, i finally flashed stock rom into my phone and flashed a stock ics based rom. Everything was working fine until one day my touch was not working well. I switched off the phone and turned it on and the touch was right back on. Again, things were smooth until this issue happened quite frequently. The problem was solved after turning off the phone and powering it off. After some time, the problem again started to come. At this point, the touch was not working COMPLETELY.
I was scared and immedaitly flashed the stock rom. During the initial boot, everything was working fine. But, when i locked the screen and tried to use the phone after some time, the same problem occured again.
So friends, my question is, Is this a software related problem or a hardware related problem. If this is a h/w related problem, is there any point in touch working during some time and not working later? ( Now, touch stopeed working completely). Will any tutorial on this forum about bricked touchscreen (after flashing wrong rom, which i am sure i didn't) will help me solve this problem?
I am awaiting for your valued input as this is the phone that i use for all my communication needs.
Kindly help me
Thanks
Well, if stock didn't solve it, there's a chance it's a hw issue. If you look closely, "touchscreen brick" guides are meant for the mini and the lww (touch digitizer separated from display), not the mini pro (touch digitizer and display as one assembly).
And yes, there are situations where your touch digitizer might cease to function for a few seconds then respond after a while, and sometimes it stops working completely after the next reboot (or forever). It happened to me with a deffective replacement part.
Pixelado said:
Well, if stock didn't solve it, there's a chance it's a hw issue. If you look closely, "touchscreen brick" guides are meant for the mini and the lww (touch digitizer separated from display), not the mini pro (touch digitizer and display as one assembly).
And yes, there are situations where your touch digitizer might cease to function for a few seconds then respond after a while, and sometimes it stops working completely after the next reboot (or forever). It happened to me with a deffective replacement part.
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Thanks for your reply.......
I guess it is indeed an hardware issue. My phone used to reboot when i slide my keyboard out fast. The screen gets dimmed out and the phone immediatly restarts. Last few days before the problem worsened it was overheating also.
Can you suggest me which hardware part i should change to rectify the touch issue? Awaiting for your reply
Thanks a lot
Ok your problem seems to be worse than expected. A faulty touchscreen shouldn't cause sudden reboots. I'd say it's a flex ribbon issue.
Try to get a replacement flex ribbon and test it extensively before installing it on your phone. Replacing the flex might be enough to solve all of your problems. If any of the problems persist with a new flex, you'll need a new screen assembly (quite expensive at 35~50 bucks).
Related
Hi, I have a quick question.
My digitizer starts failing. I know in the end it should fails cause most of them need to be replaced but maybe my problem is different.
Most of digitizers are stop working at all or only some parts of it. My digitizer is working fine but ONLY after turning on screen sometimes it's working like using it with wet fingers - it's crazy pointing everything without my control. After turn off and on screen it's working fine until next turning on.
I'm wondering can it be software problem?? I had similar problem in Defy+, leds under hardware keys stop lighting and before sending it on warranty I wiped it and now all working fine.
It's no problem for me to replace digitizer or wipe system but it would be good to know that it can be software problem before buying new digitizer.
Maybe you need to apply the raindrop fix. Been discussed already.
First, thaks for understanding what I mean. (Very poor english)
Second, this is exactly what I ment. I just copied tounchpad.cfg from http://forum.xda-developers.com/showthread.php?t=1467696 and all looks fine now. No mess up on multitouch. I hope it will stop messed up touch while turning on screen, need to test it for a while cause this issue isn't appears on each turning on but ocassionaly.
Anyway thanks for fix. You saved my time (3 hours on wiping and bulding new system) and money on new digitizer.
One more thing. I'm using this phone from few months and everything was ok. The problem appears few weeks ago. So if it is bug in rom it should appears just after I bought it, not after few months. Or maybe it's not factory bug but just error in touchpad.cfg??
Sorry for post under post but I have few more informations.
After testing few days raindrop fix the problem still exist. Fix helped but not fixed problem. Still after turning on screen touch is acting crazy but after first touch it stops and before applying fix it stops only after turning off screen and turning it on.
I reflashed full sbf stock Gingerbread, full wipe including internal memory and still the same problem.
Strange thing I observed is the problem appear only when WiFi is on and it's searching or trying to connect. When WiFi is off or it's connected to router the problem never appears and when I turn on screen and after that turn on WiFi everything is ok. Only when I'm turning screen with WiFi on screen touch acting like crazy.
Is there any chance to fix it or should I buy new digitizer??
Ok, I changed digitizer on warranty and now everything is okay. Funny thing is that I have unlocked bootloader and they changed my digitizer without any problems. Less funny is that they broke both sensors changing it and I had to send My Atrix to Motorola once more after two days to change flex. But now I hope it should be working fine.
So after all it had to be popular hardware problem.
Thred can be closed.
Sent from Motorola Atrix
Hello, I was having my Mobile phone in my pocket (SK17i). I took it out and suddenly it touch screen stopped working.
I was having MIUI 3 on my mobile with Extended Xperia Kernel.
I just want to know, what has occured, I mean if it is Software problem, or a hardware problem as there is no damage to mobile screen, not a scratch. The touch button, i.e. back button and menu button work properly, just the touchscreen is not responding.
I have tried to change the ROM to original one. Changed the Kernel too. Still no response.
Kindly help me. Please
Sorry mate, but all indicates hardware malfunction.
I got a similar problem with a different phone wen it spilled some cafe on it (very little).
I opened, cleaned and everything worked except touchscreen.
Could it be some humidity on the phone?
(hope you didn't pissed your pants )
Anyway, for this phone you can order a new LCD + Touch from the ebay and assemble yourself with a tutorial on FixIt (google it).
If it still has warranty just send it back
Hi boys,
yeasterday I changed digitizer on my Xperia PRO mk16i, which was broken, but still fully functional.
Now I have problem with this new - in the middle of LCD it´s don´t read my touchs. In the top and bottom of LCD is situation better - it is almost functional.
I found some recalibration functions, but it´s no possible via standard phone menu. So I tested change firmware with Flash tool. I tested A 2.3.4 and 4.0, but everything is bad - I cannot found any calibration function. (When I bought my phone, first thing which I must do was calibration).
Please, can you help me? What I must need for run calibration process?
Many thanks,
Petr
Wow, I've never heard about touch calibration on capacitive devices. I'm pretty sure your new digitizer is defective. Happens to the best of us hehe.
I have similar problem with this guy. Middle of the screen doesn't read my touch, I'm using mini pro. My case I hold my phone with wet hands, then the day after, it happens. Flashed to stock didn't help. It seems your digitizer is defective as said. Take the phone to where you changed the digitizer and ask for warranty.
Sent from my MemoPad
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!!!
Hello mates.
I've got some issue with my desire x touch screen. It is becoming unresponsive.
The whole thing started like 1 month ago. I've noticed that as my phone gets hotter (playing games, using internet) my touchscreen was slowly becoming unresponsive. Firstly I was unable to scroll down my notifications (only the narrow bar at the top was not working) and then it came to a random places of screen, so I couldn't even write sms message. The thing is that it is not unresponsive at all. When I press certain unresponsive area it finally detects the touch. I tried everything, from wiping my screen with a soft tissue through removing battery and sim and sd card to wiping dalvik and cache. I've noticed, that after night the problem was almost gone. And again, after using phone for some time issue occured again. I figured that flashing a new kernel might be a good solution. And it helped and I was happy.
Unfortunatelly, yesterday problem returned. But as you probably suppose - flashing kernel ain't helping. I've also tried other methods mentioned above, but the only thing what helps a bit is leaving the phone unused for like 1 hour or so.
Do u guys have any ideas, what can I do to repair it or to fix it? Any help will be strongly appreciated
ptaq1234 said:
Hello mates.
I've got some issue with my desire x touch screen. It is becoming unresponsive.
The whole thing started like 1 month ago. I've noticed that as my phone gets hotter (playing games, using internet) my touchscreen was slowly becoming unresponsive. Firstly I was unable to scroll down my notifications (only the narrow bar at the top was not working) and then it came to a random places of screen, so I couldn't even write sms message. The thing is that it is not unresponsive at all. When I press certain unresponsive area it finally detects the touch. I tried everything, from wiping my screen with a soft tissue through removing battery and sim and sd card to wiping dalvik and cache. I've noticed, that after night the problem was almost gone. And again, after using phone for some time issue occured again. I figured that flashing a new kernel might be a good solution. And it helped and I was happy.
Unfortunatelly, yesterday problem returned. But as you probably suppose - flashing kernel ain't helping. I've also tried other methods mentioned above, but the only thing what helps a bit is leaving the phone unused for like 1 hour or so.
Do u guys have any ideas, what can I do to repair it or to fix it? Any help will be strongly appreciated
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Click to collapse
I have a similar problem after replacing touch screen. I have found the source of the issue, it could be similar to yours.
My touch screen at the bottom was glued to the LCD in a short line and the adhesive was probably touching part of the LCD cable that goes underneath. I used a hair drier to warm it up and lift off the touch screen. That way there is no bad interaction between the touch screen and the LCD. Haven't had this problem since but my touch screen is unfortunately a bit lose this way. Even now, whenever I push the navigation part of the touch screen too hard, the problem comes back. I will need something to isolate the bottom part of the touch screen from touching the LCD. I will keep you updated if I find a final solution. In the meantime, it could be worth trying it on your phone too.
I think I will just get S-OFF, revert my phone to stock and give it back for warranty repair Anyone of you guys did this? Did 7 vibrations at boot void your warranty?
I'm thinking about warranty repair, cause my bro has the same phone, but full stock, not even rooted. And he got simmilar problem to me, but with less intensivity (it just comes and goes once in a while). Also recently I got this phantom touch problem (after enabling show touch in options I saw my phone is detecting some touches in specific areas) So I think warranty will be the only option :/