I found an interesting issue with my 2 years old Touch Diamond 2. Don't know whether someone had the same so I'd like to post here for reference.
Few months ago after a phone drop I found a circle of black pixels on the screen after I (as in the attached image), that didn't react on any actions. So I though those were dead pixels - a lot of them!!! BTW, I dropped the phone many times before that.
The most interesting I found later is that in the last winter, the screen had recovered itself - the "dead" black pixels became lighter and lighter and fully recovered - no traces at all
Last week the similar appeared again - this time 3 areas with black dots - and again, after a phone drop. Thinking about the winter time - I tried putting the phone in a plastic bag and left it in the fridge for a night. As the result the black dots became lighter. So I decided to leave it in the fridge (without battery) for the whole weekend. And as expected - the issue is "fixed" - no traces of "dead" pixels remain Already one week since then, the phone still OK.
Can anyone explain me what is behind the issue and the way it could be fixed as above?
I believe the "dead pixels" are just collapsed layers of the digitizer.
The coldness probably just firms up and separates the layers.
You could also try pulling the layers apart with duct tape.
Bruce Inman said:
I believe the "dead pixels" are just collapsed layers of the digitizer.
The coldness probably just firms up and separates the layers.
You could also try pulling the layers apart with duct tape.
Click to expand...
Click to collapse
The "dead pixels" I was about are "on" the inner screen, not the outer. So I think it is more likely a LCD issue rather than digitizer, which is sticked with the outer protection layer as I understand. Am I right?
Exactly the same
mttca,
when I read your post I thought you were talking about my Topaz
I really dont know why or wat is the cause of this type of circle.
Last summer i had the same issue and it disappers after 3 days like you say;
the "dead" black pixels became lighter and lighter and fully recovered - no traces at all
but aprox. two month ago i get the "dead pixels" back, but this time my screen wont recover. This pixels are darker after using for some time the phone and became lighter after some hours without use.
I`am not sure to leave the phone in the fridge.
Circle of Dead Pixels
Hi all, sorry to revive this thread - but the same thing happened to be about 2 months ago.
Got the infamous circle of pixels after dropping the phone - I thought the LCD was damaged, so I bought a new one off ebay and replaced it and it worked great.
Now I've managed to drop the phone again and have an almost identical circle of pixels on the new LCD.
So I'm thinking, does the FRIDGE TECHNIQUE actually work? Should i pull apart the phone and just put the LCD in the fridge overnight? Might even try that with the old LCD as I still have it.
The fridge technique does seem to work. A few months ago I dropped my phone and got the "dead" pixels in random clusters on the screen. They were blue in my case when the background on the screen was white. They went away after a day or so.
With the more recent second drop, they did not go away. They did seem to become lighter over night (phone screen off, thus no heat) and became darker when I used the phone. After waiting 4 days and the blue stuck pixels not going away, I decided to try the fridge technique.
I took out the battery, SIM and SD card and put the phone in the fridge for an hour. After removing the phone and powering it on, I noticed that most of the blue pixels had vanished, but some still remained. The ones that did remain were indeed lighter. I did not put the phone in the fridge again that night. The next day, the blue pixels that had vanished because of the fridge technique had come back, but this time it seemed like they were forming a slightly different pattern. In fact they started forming small vertical lines. I guess that's why it's called a Liquid Crystal Display?
Anyway, this time I decided to put the phone in the fridge over night. So again I took it apart and wrapped it in a plastic bag. The next morning I had a perfectly clear screen - all the stuck blue pixels / line fragments had vanished. A few hours later of me using the phone, two or three adjacent blue pixels appeared.
It has been two days now and the two or the pixels that reappeared turned into a group of about 20, again tending to become small vertical lines. This, however is a small percentage of the stuck pixels originally showing due to the second drop. The rest of the stuck pixels seem to be gone.
My plan is to put the phone in the fridge again over night, hopefully eliminating all stuck pixels for good this time.
P.S. Sorry for the long post, I got a bit carried away
your touch screen will die soon
It means your touch screen will die soon. I sggest replacing the digitzer or whole front cover. More details are here:
http://forum.xda-developers.com/showpost.php?p=22821614&postcount=18
DroidConvert said:
The fridge technique does seem to work. A few months ago I dropped my phone and got the "dead" pixels in random clusters on the screen. They were blue in my case when the background on the screen was white. They went away after a day or so.
With the more recent second drop, they did not go away. They did seem to become lighter over night (phone screen off, thus no heat) and became darker when I used the phone. After waiting 4 days and the blue stuck pixels not going away, I decided to try the fridge technique.
I took out the battery, SIM and SD card and put the phone in the fridge for an hour. After removing the phone and powering it on, I noticed that most of the blue pixels had vanished, but some still remained. The ones that did remain were indeed lighter. I did not put the phone in the fridge again that night. The next day, the blue pixels that had vanished because of the fridge technique had come back, but this time it seemed like they were forming a slightly different pattern. In fact they started forming small vertical lines. I guess that's why it's called a Liquid Crystal Display?
Anyway, this time I decided to put the phone in the fridge over night. So again I took it apart and wrapped it in a plastic bag. The next morning I had a perfectly clear screen - all the stuck blue pixels / line fragments had vanished. A few hours later of me using the phone, two or three adjacent blue pixels appeared.
It has been two days now and the two or the pixels that reappeared turned into a group of about 20, again tending to become small vertical lines. This, however is a small percentage of the stuck pixels originally showing due to the second drop. The rest of the stuck pixels seem to be gone.
My plan is to put the phone in the fridge again over night, hopefully eliminating all stuck pixels for good this time.
P.S. Sorry for the long post, I got a bit carried away
Click to expand...
Click to collapse
have u kept the phone in the freezer or just fridge ?
happened to me last winter. i thought it's going to be dead soon.... and circle disappeared after 2-3 months without any intervention. no clue, but the screen still works and no dead pixels/circles since
Related
I just got a tilt about a week ago and ive noticed that in the middle of the screen there seems to be a purple greenish tint when put against incandescent light. The size of said glint varies in size but i'm unable to see what changes the size. Not sure if its heat or pressure or something. The touch screen works perfectly its just really annoying to always see such an annoying glint.
An interesting discovery is that when i press all four corners of the screen it disappears and when i press in the middle of the little square it seems to spread out. I feel like theres some kind of material or something in the touch screen that is causing this due to pressure. I keep it in a hard case in my pocket so the screen isnt pressed on inadvertently.
I've searched the forum for any answers but i havent seen anything about it. Any response or help would be greatly appreciated. I'll try to get a picture of it up asap but i left my camera at a friends house and dont know when im getting it back...thanks in advanced
~sayazs
Do you see the same "annoying glint" under neon light (not day / sunlight)?
Lots of NOKIA and SONY ERICSSON phones for example get this screen recolorization under direct sunlight - this has nothing to do with the screen being defective but with the plastic above the screen which breaks the light and shows you this colored spots. If you can't see the same spot under direct neon light then this might be the cause.
It is normal that you get color changes while pressing the screen in. First of, you press / bent the protecting plastic and the liquid within the screen which causes the incoming light to break in a different angle, therefore the color changes. (BTW: you shouldn't do that too often, it can cause permanent stains on your screen!).
There sure is the possibility that your screen gets pressure from underneath due bad assembling! If you're still under warranty, try to get a replacement.
yeah you cant see it in day light. but i feel as though there is constant pressure on the screen between the plastic and liquid since the spot is always there and doesnt really go away (unless of course in daylight).
well im thinking im going to go back for a replacement. thanks for the quick answer!
Eh, bad week. First comes the small crack in my Kaiser's screen, getting out of a car, then somehow the bottom of my cup from BK giving out in my car, pouring water into the area where I leave my phone.
I know you folks have read a fair share of water damage problems, I have searched around for the last hour or two reading threads, but to my avail, haven't came across anyone with the same problem as I.
Basically, as the phone stands at the moment, it's basically completely stock. Haven't flashed anything, added a few programs, etc. Haven't upgraded the battery; everything is how it would be buying a brand new phone, essentially. As for my problem, yes, the water sensitive sticker is pink. The phone was probably sitting in about a half inch of water for 10 minutes; only the bottom half (everything below the LCD) got wet. Then, it probably sat in my pocket for a good 10 minutes before I noticed my leg was getting drenched. I took it out of my pocket, only to see my screen going berserk, thinking that it had to do with my small crack in my screen from the day before. (The crack only runs about 1/8th of an inch in the bottom left corner. The touch screen and LCD were working absolutely fine the entire day with it there.) I noticed the bottom of the phone was wet, took the battery out, etc., and promptly took the SD card and my SIM out as well. I dried everything off, as there wasn't really much water anywhere, just streaks of water here and there, let the phone sit in front of the heat in the car for a good half hour or so, and decided to test it out to see if it works.
Normally, I'd be afraid to put the battery in so quick, but everything seemed pretty dry. On my first attempt, it booted up absolutely fine, with the exception of lasting long. After the AT&T screen and the norm, I got to my home screen where the screen ended up breaking up into pixels and slowly fading black, then to white. I decided to take the battery out and let it dry again.
I got home earlier tonight, took out the hair dryer, dried it on very low heat for 30 minutes, just to be sure, and tried again. This time, everything boots up, with the exception of the graphics. It goes to a very-bright white screen, where the AT&T logo would normally be, then dims a bit, where the green windows mobile load would be, then stays that way. After I know it's fully booted, everything works, but the screen is still white. Keyboard lights up, I can receive and make calls, speaker works. Hell, I know the camera works as well because the back-light goes the brightest when I hit the camera button, and take a picture I can hear the shutter sound.. despite no graphics.
My question is, do you guys think it has to do with the crack in the screen at all, or the water damage? If I had to take a guess, it would be the water. If I touch the crack, or any part of the screen, I don't get the normal black/white discoloring someone would normally get. Yet, why would everything be functional except the screen? Since I bought the phone off of Ebay, I have absolutely no coverage with AT&T, and never planned to anyway, my only resort would be to either mess with the phone itself, or find a repair service.. and of course buying another tilt, which, could kind of burn a hole in my pocket with the holidays and all. I'm tempted to go buy a set of T torx, but of course it'd be my first time taking apart this device and if it is repairable, I'm not trying to be the sole "act" of bricking it.
Anyone have any thoughts or comments? Anything would be appreciated.
Thanks, Scott.
Edit: Gah, just got another RLOD. I've gotten past this once already.. it ended up being my manufacturer's charger. When I toggled with it for awhile, nothing seemed to fix it. I got pissed one night, and jammed the old charger into the USB slot, and viola, amber light. I changed chargers right away, and it's been working fine since. I just tried messing with it again, but nothing happened. I guess I'm going to take apart the device, leave everything standing for a few days, and see what happens, unless of course, someone provides a decent solution to this.
Edit2: Lol, Amber light again. I hate this ****. I'm really looking into the Fuze, but once again, I'd like to get this up and running.
The first thing to do if you get water damage is pull the battery and do not put it back in until you're well beyond sure it's dry and clean. If the liquid was salt water, soda, etc, it would have to be cleaned, then dried.
Otherwise, probably garbage. Especially considering it ran for a while when wet, and you then tried to power it back up after wiping it off.
khaytsus said:
The first thing to do if you get water damage is pull the battery and do not put it back in until you're well beyond sure it's dry and clean. If the liquid was salt water, soda, etc, it would have to be cleaned, then dried.
Otherwise, probably garbage. Especially considering it ran for a while when wet, and you then tried to power it back up after wiping it off.
Click to expand...
Click to collapse
unfortunately this is quite true... I've been working with electronics (specifically printed circuit boards & surface mount technology) for nearly 2 decades and have seen a number of items with water damage come out fine if it was powered down, cleaned and dried properly.
Disassembly of the tilt and hermes is very easy, especially with Mike's guide. But you have a digital problem. You could take it appart and try to clean the surfaces of the circuit boards with a q-tip and some Isopropyl alcohol, possibly a short amoungst one of the IC's. I think at this point, you've got nothing left to loose. Good luck none the less, let us know what happens. PM me if you think I can help!
Thanks guys, I'll see what I can do.
Hi
I was wondering if the OP managed to get this sorted ? I have the same problem, due to phone somehow being exposed to water. the OS loads fine, but screen stays white.
Is there any solution ?
Thanks
Recently, I noticed the is a strange circle in the middle of the screen. When the screen backlight is off, it appears as a black circle. When the screen backlight is on, it appears as red/yellow/black ring. Somtimes it went away by itself, and other time I have to "wipe" it away with finger force.
Anyone know what is wrong?
2 questions
1) Have you tried removing the screen protection just to see whether its on the screen protection or on the main lcd screen
2) did you ever exposed lcd it to high electromagnetic waves??
1. I didn't remove the screen protector as I believe it's beneath the LCD film.
2. I don't think it has been exposed to any electromagnetic waves, as it appears after I pulled it out from my pocket.
I've had it too but it's gone now
I had the exact same problem a few weeks ago. The place I stayed was not well ventilated and I THINK it caused some water condensation to occur between the digitizer and lcd screen. I slept in an air-conditioned room the next day and it was gone!
My deduction is that you need a cool or cold environment for the stain to evaporate.
The same problem arises again, and this time it has been a couple days but it still did not go away.
It looks almost like a burn mark.
You may have a defective digitizer.
Found another thread talking about this:
http://forum.xda-developers.com/showthread.php?t=439410
This is the so-called 'Newton ring' in optics/Physics. It means that in that area, the thickness of LCD is slightly thicker/thinner than rest of the area. This is normally due to stress at that point. It is annoying but if there are no repeated color rings, like red/yellow/blue/red/yellow/blue, it should be fine. If you have alot of repeated color rings, the LCD may approach its life end.
frank.lui said:
This is the so-called 'Newton ring' in optics/Physics. It means that in that area, the thickness of LCD is slightly thicker/thinner than rest of the area. This is normally due to stress at that point. It is annoying but if there are no repeated color rings, like red/yellow/blue/red/yellow/blue, it should be fine. If you have alot of repeated color rings, the LCD may approach its life end.
Click to expand...
Click to collapse
Thanks for the info. When you said it should be fine, do you mean it will disappear, or it just won't affect usability?
It may disappear if the stress is released, e.g., you push the area a bit or you put it into different temperature environment. But I doubt it will disappear for ever. It was not there in the first place then it came. This means some sort of stress/pressure built up there. It should not affect your daily use a lot. It is just a visual effect. But if it gets worse, the colour rings will become very dense and sharp. It will affect you visual. I had a phone pinged on LCD sometime ago. It had similar rings like yours. But it was so dense I could not see any thing behind it. I had to change it for £35.
Also I looked at another previous comment about the humidity. It could give you the same effect. Maybe you can bake your phone a bit?
I have been given a captivate from a friend who said he dropped it in the toilet, it turned off when he grabbed it.
He said he stuck it in a bowl of rice over night after removing the battery.
First thing i did was wipe it, odin came back a full success no errors.
When i boot it i see the at&t thing & the little 3g fly by, but the screen is all cloudy. Once its booted up i see the screen locked deal and i can swipe it to unlock and and even change the pages. After a few seconds i will notice the screen starting to fade to black, all this time still being cloudy. If i manually turn the screen off with the power button for a couple minutes, i am able to turn it back on and see the cloudy screen again.
My questions are these.
Seems to me the LCD is messed up, Can i just replace the LCD?
How do i know if anything else is damaged?
Ive read about the battery indicators, both of which are still white.
ive already taken it apart , "comfortable when its a free phone", and notice a slight burn mark from a resistor on the LCD to the metal shielding that it is pressed up against.
Any ideas would be helpful.
SRobby said:
I have been given a captivate from a friend who said he dropped it in the toilet, it turned off when he grabbed it.
He said he stuck it in a bowl of rice over night after removing the battery.
First thing i did was wipe it, odin came back a full success no errors.
When i boot it i see the at&t thing & the little 3g fly by, but the screen is all cloudy. Once its booted up i see the screen locked deal and i can swipe it to unlock and and even change the pages. After a few seconds i will notice the screen starting to fade to black, all this time still being cloudy. If i manually turn the screen off with the power button for a couple minutes, i am able to turn it back on and see the cloudy screen again.
My questions are these.
Seems to me the LCD is messed up, Can i just replace the LCD?
How do i know if anything else is damaged?
Ive read about the battery indicators, both of which are still white.
ive already taken it apart , "comfortable when its a free phone", and notice a slight burn mark from a resistor on the LCD to the metal shielding that it is pressed up against.
Any ideas would be helpful.
Click to expand...
Click to collapse
To test whether all the sensors, vibration, touch screen, LED colors, magnetic sensors works properly, install and use SGS Tools..
There are lot of tests and testing modes available there.. hope this helps
I've seen some threads about this on other tabs, like the Galaxy Tab 10.1, but not on the Asus tablets yet. On my TF701T, I noticed over the past month that when I take it out of the case I have for it (a neoprene case with a zipper), it has a spot in the middle about the size of two quarters that looks like moisture under the glass.
Within a few seconds of turning it on (and sometimes not even turning it on), it disappears by quickly getting smaller and smaller into the center.
All of this, not a big deal.
However, last night I saw something even more odd....the spot disappeared with the exception of a ring of moisture (instead of a full circle) that stayed and wouldn't go away (again, slightly larger than a quarter). Touching parts of the screen would jiggle the ring. It seems like something was happening in the LCD display.
In the past when it went away, I assumed the screen was warming up and causing it to go away. However since it didn't this time, I thought something was damaged.
I saw a bizarre thread somewhere that suggested to put it in the fridge or freezer for a short time and the cooling would make it go away....if I remember correctly, it may have implied that the LCD and digitizer where touching or stuck together. I figured, what the heck, I stuck it in the freezer for a few minutes. When I got it out, it was nice an cold, and the spot was gone.
Has anyone seen this? Anyone know anything about what this would occur and why the cold would fix it?
Thanks,
chris
I had exactly the same issue you described. The moisture spot would always go away eventually. However, one day, while in use, the screen suddenly died. The tablet was still working fine (confirmed with an hdmi cable). I was unlocked, so the tablet became useless. I have no idea if the moisture and screen failures were related or not, but if you are not unlocked, I'd probably try to get it repaired.
I suspect that what you and I have is a gap between the LCD and the digitizer. We have (3) tf701t's in our house now and no moisture spots yet on any of them.
Hope this helps.
derekk1 said:
I had exactly the same issue you described. The moisture spot would always go away eventually. However, one day, while in use, the screen suddenly died. The tablet was still working fine (confirmed with an hdmi cable). I was unlocked, so the tablet became useless. I have no idea if the moisture and screen failures were related or not, but if you are not unlocked, I'd probably try to get it repaired.
I suspect that what you and I have is a gap between the LCD and the digitizer. We have (3) tf701t's in our house now and no moisture spots yet on any of them.
Hope this helps.
Click to expand...
Click to collapse
Thanks, good to know. I am unfortunately already rooted and running sbdags rom. It is interesting that it only happens when I have had it in the case for a little while. Hadn't happened again for about a week, but started happened again last night. Fortunately, it went away on its own again very quickly. Oh well, it is what it is.
blickley said:
I've seen some threads about this on other tabs, like the Galaxy Tab 10.1, but not on the Asus tablets yet. On my TF701T, I noticed over the past month that when I take it out of the case I have for it (a neoprene case with a zipper), it has a spot in the middle about the size of two quarters that looks like moisture under the glass.
Within a few seconds of turning it on (and sometimes not even turning it on), it disappears by quickly getting smaller and smaller into the center.
All of this, not a big deal.
However, last night I saw something even more odd....the spot disappeared with the exception of a ring of moisture (instead of a full circle) that stayed and wouldn't go away (again, slightly larger than a quarter). Touching parts of the screen would jiggle the ring. It seems like something was happening in the LCD display.
In the past when it went away, I assumed the screen was warming up and causing it to go away. However since it didn't this time, I thought something was damaged.
I saw a bizarre thread somewhere that suggested to put it in the fridge or freezer for a short time and the cooling would make it go away....if I remember correctly, it may have implied that the LCD and digitizer where touching or stuck together. I figured, what the heck, I stuck it in the freezer for a few minutes. When I got it out, it was nice an cold, and the spot was gone.
Has anyone seen this? Anyone know anything about what this would occur and why the cold would fix it?
Thanks,
chris
Click to expand...
Click to collapse
I have also noticed the same spot after pulling my tablet out of the neoprene case. I have been getting itchy to root but now I will hold off. Maybe I should try the freezer fix?
Thanks for post!
ASUS Tf701 moisture ring center of glass
I had this happen in the past, but it always went away when I turned the tablet on. I always store it in a leather case, the screen never touches anything. It recently came back and will not go away. I've been reading threads about putting it in the freezer for a short time....my question is, how long have people left it in there, 2 minutes, 5 minutes? The spot is driving me crazy since it now won't go away.
Thanks for your assistance!
Roni
I have the same problem with my TF701T. But I noticed it isn't moisture between the screen but digitizer and the LCD screen touching eachother? If you bend the tablet really slightly towards you, you'll see the "moisture" go away. Don't have to apply too much force. Might be just design flaw IMO.