Hi,
a while ago, I cracked my Uni's LCD. So I ordered a new one including the digitizer, opened my Uni and swithched the displays. Now at times, the touch screen wouldn't work at all - unless I tap the upper left corner (the start button; in portrait mode) or the lower left corner (the left button or slightly above it; in landscape). After that, tapping everywhere works normally. Does anyone have an idea what this could be caused by or how to solve it?
Thanks in advance!
I'd make sure your contacts are very clean. If you think maybe they're not, then take out and clean contacts with dry cloth or contact cleaner and re-insert.
Also, make sure there's no debris around screen. That nothing is pressing on digitiser anywhere else that gives false postive for it.
enigma may be able to help you better, I think she's more accustomed to the HW
Generally, all touch problems are associated with a digitizer. Without actually seeing your device I assume your digitizer is faulty and the problem may be either improper adhesion or the soldering joint improperly formed. Adhesion problem may be resolved by warming the screen with a blowdryer, no need to get it hot, just slightly warm all over and smooth with a soft cloth as if you are applying a screen protector, it loosens the special sticky gel that attaches the digitizer to the LCD and usually helps in cases where sensitivity is sporadic or screen calibration returns wrong response. Check for any bubbling, although not seen when the screen is viewed directly, some may be noted at the angle.
However, in your case there are certain points that need to be pressed in order for it to work, so I take it, the screen works most of the time and the problem is intermittent, the corners that need to be pressed might be the ones where adhesion is not up to scratch.
Try re-assembly, if all fails - contact the screen supplier, faults can happen, especially in non-OEM parts.
Do keep us updated if you find the solution, I am sure all members can benefit.
Problem solved
Well over time, the situation changed so that the touch screen didn't work at all, unless I was pressing one spot above the LCD fairly hardly, at which time it worked without problems. Once I stopped presing the spot, it stopped working again.
So I tried opening the Uni and disconnecting and reconnecting the LCD FPC (which was located just under the spot that needed to be pressed), which seems to have solved the problem
Related
My phone has been going great and giving no issues. Byt the other evening suddenly the toicuh screen stopped being responsive!!! Totally randomly. No drop or spil or anythign like that, no new software or roms recently.
When you open it the keyboard still lights up, and after a hard reset, you can navigate a bit using the keys. But ZERO response from the screen!!!
As i say, this is even with a hard reset!!! I also tried using masking tip to pressure the screen in case somethign was stuck.
Ok it mighty be the digitiser, or a loose connection. Im hoping not.
Has anyone experienced this or similar and is tehre anythign else i can try before i take the plunge and get someone to look at it??? (its out of warranty unfort)
Ouch
Sorry to hear. It happened to me months back. It started with very uncalibrated clicks... making corner clicking impossible to compensate for.
I've recompensated, but that didn't last long - and it eventually degraded to no touch screen. With insurance, I did get a refurbish for my woes.
I flashed Stock ROM and relocked. No luck.
I'd still back up everything.
Reformat SD card.
Reflash stock ROM
Relock the device - all to see if it helps.
I did have a similar recent problem - but in this case it's because I was using a clip on hard case front that must've been putting pressure on the touch screen.
Hopefully one of these helps you out. Good luck
When my screen stopped responding it was due to a more physical thing.
I read this somewhere and tried it, worked instantly!
You have to get your finger nail under the screen (try pushing your nail into the edge of the screen from the side) and lift the screen up a bit.
This worked for me. If you think its a physical and not software issue give it a shot.
I have had the same problem.
I bought new touch screen on ebay (about $15) and after replacement the device works well.
stop everything !!!!!
if you have Google G Mail set up on your phone remove it and it will fix it's self
somthing google / G mail is doing the tilt 2 doesn't like
causing the "Sleep Of Death"
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????
npahlavan said:
When my screen stopped responding it was due to a more physical thing.
I read this somewhere and tried it, worked instantly!
You have to get your finger nail under the screen (try pushing your nail into the edge of the screen from the side) and lift the screen up a bit.
This worked for me. If you think its a physical and not software issue give it a shot.
Click to expand...
Click to collapse
Woohoo! It worked for me too!
Below is one more post on this topic from another forum:
Originally Posted by p38fln View Post
Well, I finally figured out how this is happening - the digitizer is GLUED on to the phone's plastic case. The glue is like rubber cement, not rigid like super glue. Eventually, the glue lets the screen slide into the center of the phone, until the digitizer actually touches the screen - and then, the digitizer stops working.
It's actually very simple to fix - slide a finger nail under the plastic by the speaker and gently pry the digitizer up. Then, put it back. You dont need to remove it totally from the phone. It will flex back to its flat shape as soon as the glue releases. As soon as you stick it back down, the touch screen will work again.
I was wondering if anyone can help me fix a problem I've got with my tp2. Basically the device turns on and I can make phone calls and use programs fine. However I can't use the touch screen at all, the hard buttons all work, but touching the screen has no effect.
When the screen is turned off I can see a rainbow pattern on it and it moves to my touch. This could be water damage but I don't remember dropping it in water. The water mark is red on the phone and battery, so it probably is water damage.
Just wondering if anyone knows an easy fix for this. Thanks for reading
Just had exactly the same thing happen this week. At first if I turned it off and firmly pressed my thumbs up the screen (as if I was pushing the rainbow marks to the edge of the screen) I could get it to respond for a while. Then it started to get larger spots and now I can't get it to respond no matter what I do...
If the touch screen is not functional, then you'll likely need to replace the digitizer. I would suggest purchasing the LCD/digitizer combos, as they are easier to install for first timers.
Did a search can't find anything specific to my issues.
So I had to replace my amoled screen (Samsung brand), did the replacement everything works fine. But...
now it seems my touch screen has a mind of it's own. It will jump out of apps on me or it's favorite is to jump to the recent apps screen (the screen when you hold the home down). It first seemed to do this when I held it's sides with a little pressure, now it's doing it less. Now it jumps to the screen when I gently set it down on it's back.
I have opened the phone back up washed my hands with dish soap, then disconnected all the ribbons and q-tipped them with rubbing alcohol to clean any oil off. (this seemed to help the side squeeze issue)
I also applied clear tape to the back side of the new screen like how it was on the OEM screen since it didn't come with any kind of shielding like to OEM screen (ie that weird metal fabric like tape).
I still get issues and am not sure what it could be or I could do, taking it to VW is not an option.
Oddy enough, hitting it seems to help it, I am not sure if something is shorting or what it could be. I have removed the screen and reset it back on the touch pad still nothing helps.
I am about to try cm7 to see if it's a software or hardware thing but I suspect hardware.
Thanks guys
Try a new rom, like you said. This will 100% determine if it is hardware or software. If it still jumps around on cm7, then there is something wrong with the hardware
Sent from my HTC Incredible
I don't know a great deal about replacing hardware on a phone, but is it possible that the screen type is different than the stock type? Some Incredibles have AMOLED screens and others have SLCD. I know with computers, if you replace a part that't not compliant with the original then you have issues.
So maybe the screen you put in isn't compatible with the rest of the hardware?
Just a guess...take my advice with a grain of salt lol
No its the right screen, like I said its the Samsung screen just like oem, the slcd is a Sony product used on 2nd gen dincs. plus the screen and the digitizer are two different parts, the screen is not touch sensitive.
Ah ok. Sorry...like I said, never messed with changing phone hardware....was just tossing out an idea.
I've repaired laptop parts like the LCD, touchpad, and such and had issues with the parts not being exactly the same as OEM, that's why I was asking.
It sounds like a loose connection to me... I havent had any problems with my glass unless its greasy or something. It could also be an issue with the touchpad (button), there is a rubber piece surrounding it that apparently MUST be there... Not sure what would happen if I didn't replace it tho I didn't wanna test it out
So I CM7'ed the phone, it defiantly runs better but it does still bug out.
seems to do it more at work when it's set on my plastic type desk.
I'll pull it apart again and double check the rubber gasket, blow out the optic track button and shim the ribbon connections.
seems something is defiantly shorting just a little bit and it all seems to happen down at the 4 menu buttons side of things
so I pulled it apart one last time. removed the screen and reset it in the case, this time for what it was worth I tried very hard to make sure the screen was mounted as high up toward the top as i could for what it was worth. I also made dbl sure the screen was then firmly pressed back in place and all edges were nice and recessed into it's case.
put the mother board back on and dbl checked all the ribbon connection to make sure they were nice and securely seated and not crooked, then snapped the ribbons down.
I also extended the little grounding? fingers (the ones that press against the copper pads) to make sure they would be firmly in contact with the copper pads. I only extended the ones down by the 4 menu buttons.
I con report it's been about 36 hours and nothing has bugged out yet.
not sure exactly what the issue was but i'll keep you posted if it comes back.
Hi, I have an issue that has formed after glass replacement on my Note 2. I was extremely careful in trying not to damage anything during the replacement process and I did not use excessive heat either, keeping the screen under 170 degrees F to loosen the cracked screen. The issue is that about half the time the phone touch screen will stop working during normal use and then when I hit the lock button on the right side and then unlock the phone again it will be ok for a while before it acts up again. So far, I have done a soft and hard reset with no luck. I noticed the problem is worse when the 12 small screws in the back of the phone are very tight, I loosened them all a few turns and this helped it act up less. The pen always works. I installed a multi touch testing app and this proves that something is up because it sometimes reads fingers that arent there, generally in the middle of the screen and sometimes this programs just completely flips out and reads fingers everywhere. So at this point Im guessing that maybe the replacement glass is too close to the LCD? It also does seem to be negatively affected if I bend the whole phone slightly, this also sometimes causes the touch screen to flip out of just quit altogether. Any input is extremely appreciated!
Is there supposed to be anything between the glass and the lcd when the glass is replaced? Sorry if thats a dumb question.
Today I finally decided to replace the broken screen on my Nexus 7. Everything went well and according to plan, and when turning on the device I noticed it was working fine. However, upon closer inspection it turned out that one thin line on my screen isn't working. It's preventing me from doing SwiftKey flow, and when I tried drawing in Evernote I could see it was skipping over that part of the screen.
What could be the cause of this? I can't rule out that it's the screen part itself, but could it be more likely that I somehow damaged the LCD flex cable? I tried detaching and reattaching cables, so I have doublechecked that. I guess my question is mostly, how useful is it to try and replace the cable? Thanks in advance!
wi11ow said:
Today I finally decided to replace the broken screen on my Nexus 7. Everything went well and according to plan, and when turning on the device I noticed it was working fine. However, upon closer inspection it turned out that one thin line on my screen isn't working. It's preventing me from doing SwiftKey flow, and when I tried drawing in Evernote I could see it was skipping over that part of the screen.
What could be the cause of this? I can't rule out that it's the screen part itself, but could it be more likely that I somehow damaged the LCD flex cable? I tried detaching and reattaching cables, so I have doublechecked that. I guess my question is mostly, how useful is it to try and replace the cable? Thanks in advance!
Click to expand...
Click to collapse
Did you replace the combo lcd/digitizer, or just the digitizer? In the latter case, you're lucky to have just a thin dead band; usually,1/3 of the screen would be unusable. In the former case, if the bezel is bent, however slightly, or there is some glue residue from the old screen on the bezel that causes the new screen to lie on an uneven surface, it would happen. I've experimented enough times to know the bezel has to be absolutely clean of everything and the surface must be 100% smooth and even. If you used strong tape on the new screen, your best bet is the multi-fix touch, as removing it would in most cases damage it.
graphdarnell said:
Did you replace the combo lcd/digitizer, or just the digitizer? In the latter case, you're lucky to have just a thin dead band; usually,1/3 of the screen would be unusable. In the former case, if the bezel is bent, however slightly, or there is some glue residue from the old screen on the bezel that causes the new screen to lie on an uneven surface, it would happen. I've experimented enough times to know the bezel has to be absolutely clean of everything and the surface must be 100% smooth and even. If you used strong tape on the new screen, your best bet is the multi-fix touch, as removing it would in most cases damage it.
Click to expand...
Click to collapse
I replaced the screen + digitizer. I looked at the bezel (luckily the tape I used wasn't that strong so the screen was still detachable) and I cleaned it up thoroughly. There were indeed some glue residues left. However, it was no use, the screen still fails in the same locations. I had high hopes this might be the cause, but apparently not.
I highly doubt the bezel was bent, because I was very careful with it. I will try out the multi-fix touch option, but I'll do that tomorrow as I'm quite tired now. Thanks for all the suggestions!
wi11ow said:
I replaced the screen + digitizer. I looked at the bezel (luckily the tape I used wasn't that strong so the screen was still detachable) and I cleaned it up thoroughly. There were indeed some glue residues left. However, it was no use, the screen still fails in the same locations. I had high hopes this might be the cause, but apparently not.
I highly doubt the bezel was bent, because I was very careful with it. I will try out the multi-fix touch option, but I'll do that tomorrow as I'm quite tired now. Thanks for all the suggestions!
Click to expand...
Click to collapse
Don't know if you're familiar with the mechanics of the touchscreen, so I'm adding this for the sake of completeness. Lots of people would post problems and when you try to help, would snap back: "I already tried this and that and other things..." So if you already know, forget the rest.
I've found Yet Another Multi-touch Test (YAMTT) of tremendous help in diagnosing. When you switch from one firmware to another, YAMTT allows you to pinpoint exactly where touches do not register. If the dead band remains consistent, it's probably the screen itself. However, touch detection sometimes varies with the speed at which you touch. I've seen touches missing in some areas, which would register on a second or third or fourth pass. So, go slow in those areas, and back and forth to make sure they're really dead. Tedious process indeed, since you have around 30 variants to play with.
graphdarnell said:
Don't know if you're familiar with the mechanics of the touchscreen, so I'm adding this for the sake of completeness. Lots of people would post problems and when you try to help, would snap back: "I already tried this and that and other things..." So if you already know, forget the rest.
I've found Yet Another Multi-touch Test (YAMTT) of tremendous help in diagnosing. When you switch from one firmware to another, YAMTT allows you to pinpoint exactly where touches do not register. If the dead band remains consistent, it's probably the screen itself. However, touch detection sometimes varies with the speed at which you touch. I've seen touches missing in some areas, which would register on a second or third or fourth pass. So, go slow in those areas, and back and forth to make sure they're really dead. Tedious process indeed, since you have around 30 variants to play with.
Click to expand...
Click to collapse
I don't know about the mechanics of the touchscreen, so all of this is helping me
I took a look at that tool, and I posted the result of drawing on imgur: paste "oyIt3bg" after imgur.com (I'm apparently still too 'new' to post links, sorry about that). It is clearly one band, very consistent. I think I should probably talk to the shop I got it from and ask for a replacement. Which sucks, because this particular parts took 3 weeks to even get here. Anyhow, glad I know what the problem is now. Again, thanks for all your help, I appreciate it
Hello fellow dutchie,
I have experienced this problem on my Nexus 4, and after having replaced the LCD+digitizer I also had issues with touch responsiveness in exactly the same areas. As silly as it would sound beforehand, it doesn't seem to be the screen or digitizer. Best... to give up.