Database Users

Weird problems. Whats your opinion?

Thought I'd share my story. I recently got a swap out for a "dusty" screen. My new phone seemed OK. A few days passed by and my camera flash started acting up and not working... Today I woke up and NOTHING on the top half of my phone works. Meaning my ear peice, my 3.5mm jack, my camera, or flash, or proximity/light sensors... nothing. But the speakerphone works, my screen is fine. and my microphone works. kinda odd!
It almost like the top PC board got disconnected internally or something.
Just thought this was a strange issue. Already requested yet ANOTHER swap from HTC. Hopefully this next one can make me beleive this phone was worth it.
On another note. I did get my phone "ghost armored" at a cart in the mall pretty much immediately upon receiving it from fedex. And they do spray a small amount of soapy liquid on the outside of the phone to apply the skins. Do you think this could be enough to cause water damage? I'm afraid HTC is going to charge me for "non warranty problems" if the guys at ghost armor caused this! Its a very "fine mist" they use so I think it would be hard to penetrate the phones seals. But who knows? Whats your opinion?

dills84 said:
Thought I'd share my story. I recently got a swap out for a "dusty" screen. My new phone seemed OK. A few days passed by and my camera flash started acting up and not working... Today I woke up and NOTHING on the top half of my phone works. Meaning my ear peice, my 3.5mm jack, my camera, or flash, or proximity/light sensors... nothing. But the speakerphone works, my screen is fine. and my microphone works. kinda odd!
It almost like the top PC board got disconnected internally or something.
Just thought this was a strange issue. Already requested yet ANOTHER swap from HTC. Hopefully this next one can make me beleive this phone was worth it.
On another note. I did get my phone "ghost armored" at a cart in the mall pretty much immediately upon receiving it from fedex. And they do spray a small amount of soapy liquid on the outside of the phone to apply the skins. Do you think this could be enough to cause water damage? I'm afraid HTC is going to charge me for "non warranty problems" if the guys at ghost armor caused this! Its a very "fine mist" they use so I think it would be hard to penetrate the phones seals. But who knows? Whats your opinion?
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water can literally penetrate the smallest most microscopic points. but i dont know think "mist" could do any harm. i think it sucks that you're having bad luck with all these though man.

I like straweberries, they taste good. When eaten slightly chilled they are refreshing as well. And the things you can do with them... fresh fruit topping for cereal, pancakes, yogurt, or you can make them into jam/jelly/compo(sp?)
Anyways, yes, it is possible for your device to have received water damage, this is why I have not and will never put something on my phone that requires the use of water in the application process. And it might even be probable given that on the top of the phone you have a 3.5mm jack, speaker housing, and when you take the back off this gets exposed... and I am guessing they removed the back before misting it, so even more water can get into that area causing major issues.

pjcforpres said:
I like straweberries, they taste good. When eaten slightly chilled they are refreshing as well. And the things you can do with them... fresh fruit topping for cereal, pancakes, yogurt, or you can make them into jam/jelly/compo(sp?)
Anyways, yes, it is possible for your device to have received water damage, this is why I have not and will never put something on my phone that requires the use of water in the application process. And it might even be probable given that on the top of the phone you have a 3.5mm jack, speaker housing, and when you take the back off this gets exposed... and I am guessing they removed the back before misting it, so even more water can get into that area causing major issues.
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Haha, thanks for your opinion on strawberrys.
I believe they remove the battery, but put the battery cover back on before misting. They also leave the device off while they do this and tell you to leave it off for an additional 2 hours (i left mine off for 6 or 7 hours.)

Even leaving it off, if water gets it, it gets in, and starts causing the circuits and what not to corrode.
I will say, I think it is highly unlikely that you do have water damage causing this problem. If HTC says no go, water damage, those misty dudes are responsible and liable to replace your device/pay for repairs. But, I do highly doubt it.
Still, there is a chance of there being water damage, and even if it isn't causing the problem, HTC won't care.
All in all, I would put money that the swap goes just fine, and hopefull 3rd time is the charm for you. It seems some people, no offense, just have really bad luck with these, while others (not to brag), have bought 5 of them without a single problem.

pjcforpres said:
Even leaving it off, if water gets it, it gets in, and starts causing the circuits and what not to corrode.
I will say, I think it is highly unlikely that you do have water damage causing this problem. If HTC says no go, water damage, those misty dudes are responsible and liable to replace your device/pay for repairs. But, I do highly doubt it.
Still, there is a chance of there being water damage, and even if it isn't causing the problem, HTC won't care.
All in all, I would put money that the swap goes just fine, and hopefull 3rd time is the charm for you. It seems some people, no offense, just have really bad luck with these, while others (not to brag), have bought 5 of them without a single problem.
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5 of them?! jeez!
I agree, I'm having really bad luck. I LOVE this phone. Its just getting annoying having to swap it out every other week.
I'm also angry that this broken one has the best screen I've seen on any nexus, no dust, no pink tint. its perfect! and i have to return it
Oh well. thanks for the advice. I feel a little better about the swap now, I cant really afford to lose another 530$.

One for me, and 4 others for friends that had me help them buy one...

I found the sim card slot!!!

The other day I was messin around with my sdcard and I scratched the area on the side of the microsd slot and through the plastic thing covering something it said sim card
Sent from my HTC Vision using XDA App

andslide said:
The other day I was messin around with my sdcard and I scratched the area on the side of the microsd slot and through the plastic thing covering something it said sim card
Sent from my HTC Vision using XDA App
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Did you even TRY to search the forum first?
Old, old, OLD news. Don't try to put anything in there, it's just a hole and you'll lose your SIM.

andslide said:
The other day I was messin around with my sdcard and I scratched the area on the side of the microsd slot and through the plastic thing covering something it said sim card
Sent from my HTC Vision using XDA App
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WOW THIS IS SO GREAT!
Kidding... Did you check the forums?
This was discovered like on day one, in addition it's just the slot with no tech underneath, so if you try to put a sim card in it it will get lost inside the device and never be seen again.
In addition this has nothing to do with android development of the device ;-)
Cheers ;-)

andslide said:
The other day I was messin around with my sdcard and I scratched the area on the side of the microsd slot and through the plastic thing covering something it said sim card
Sent from my HTC Vision using XDA App
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lmao.. I hope you didn't put a sim card in there. It's just a open hole to the inside of the case. Anything you put in there will just rattle around the inside of the tablet. The wifi models DO NOT have the cellular device installed.

but is it usable though?
EDIT: nevermind.. stupid question

omg this is great guys, I just found a hole on the side of my tab that my USB drive can fit into!

n1nj4dude said:
omg this is great guys, I just found a hole on the side of my tab that my USB drive can fit into!
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The whole USB drive!?

WishRyder said:
The whole USB drive!?
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I accidentally the whole tablet!

while this seems funny (well yeah it truly is) I had the back off of mine the other day (I took pics meaning to post them on iTweakit,com).
It got me thinking what was "missing", as in how hard would it be to add "the part" acer puts in the 3g version, there were no connectors, or non soldered points I could see, so I assume its a different logic board.
Anyways if you did happen to loose your sim card in that "hole" you can remove the back by carefully using a spluddger (this is a plastic screw driver intended to prevent marring the plastic) to gently pry it away from the clips. The thing is screw-less. I started around the dock connector, after the first "pop" the rest detaches fairly easily, you can use your fingers to continue prying. As a warning, remove your microsd card b4 attempting as it sits in-between the back and the logicboard.
Also I caution not to mess around with the microsd slot, I somehow damaged it slightly so it won't keep the card in unless I try to "click" it in about 20x at slightly different angles, so as far as I'm concerned I have a 48gb tablet now, as I won't be removing the sd card very often! At one point the card launched out (microsd slots are famous for such launches cause of the spring pressure), popped me in the eye ouch!

Yes, you have to be careful about sd.. I broke my sd card when disassembling the device (left the stupid thing inside). Anyway, with scissors or a screwdriver you can fix your sd slot. Usually any problems happen because it gets bent and either the card gets stuck or is too loose

Interestingly enough, there does seem to be a strange void space next to the battery, with two screw slots. Perhaps someone with a 3g model could take some pictures of their devices internals?

sp3dev said:
I accidentally the whole tablet!
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Quote of the year

Anyone up-to-date on how a sim card connects internally? Could this port be hijacked for another purpose? If it's just empty space with blank solder points we could throw in another card reader (SD) or some other random piece of tech.

somewhere deep inside, I still wish the title was really true!

Doc_rockulus said:
Anyone up-to-date on how a sim card connects internally? Could this port be hijacked for another purpose? If it's just empty space with blank solder points we could throw in another card reader (SD) or some other random piece of tech.
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I suggest you try it and tell us how it goes.

FloatingFatMan said:
I suggest you try it and tell us how it goes.
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A 3G modem is supposed to be installed into the pci-express slot. On the wifi-only models the slot is not soldered and probably the pcie controller as well, although I didn't look for it.. But there's a lot of space inside so with some mad skills you can solder a usb hub and connect it between the pcb and external usb port..

This post is still near the top of page one. Stop it, please... I chuckle every time I see it

tholmewood said:
This post is still near the top of page one. Stop it, please... I chuckle every time I see it
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Bump.

Broke My first Pi

Well, I dropped my pi with a sd card in and it broke the little pieces of plastic that hold the sdcard down. have it rednecked for now with a small plastic clamp and another pi on order but that sucks.

If anyone has any idea how to fix I am all ears. I have emailed element 14 about USA repair options
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

It would appear you are not the first.........
http://www.raspberrypi.org/phpBB3/viewtopic.php?f=24&t=18069
If you are a card carrying member of the Hardware Jockeys' Association, i.e. you are reasonably skilled with a fine soldering iron and know a bit about repairing surface mounted components (Google) - you can get the part for a couple of pounds/dollars/euros and replace it.
It appears to be surface mounted - not soldered through the board, which makes it easier. It is still not an easy job, but it is not impossible.
You may wish to wait until the new one arrives before having a go at a repair.

stephj said:
It would appear you are not the first.........
http://www.raspberrypi.org/phpBB3/viewtopic.php?f=24&t=18069
If you are a card carrying member of the Hardware Jockeys' Association, i.e. you are reasonably skilled with a fine soldering iron and know a bit about repairing surface mounted components (Google) - you can get the part for a couple of pounds/dollars/euros and replace it.
It appears to be surface mounted - not soldered through the board, which makes it easier. It is still not an easy job, but it is not impossible.
You may wish to wait until the new one arrives before having a go at a repair.
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Had that happen too. They may do it under warranty so avoid fixing yourself until you get a clear answer back.
One solution will be to glue a micro sd card adaptor into the slot permanently and use micro sd cards (there are even half size adaptors available too). Less chance of additional damage that way.

I have emailed element 14 The makers. I live in the USA so ordering the part posted on the Rpi forum makes no sense. I did find this http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=150932200123
and for 1.50 USD It will be good to have incase they dont email me back.

and just ordered one of these http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=350629703528

When it comes to the point where you are actually going to wield a soldering iron at it, you may find one of these things invaluable, if you do not already have one in your armoury.
http://www.amazon.com/s/url=search-alias=aps&field-keywords=helping+hands

I used the credit card fix. Still have another one coming. May sell it as they are hard to get in the US
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

unbelieveable said:
my ideal solution is go to buy another one, because the pi was dropped then it is hard to fix, so i think just buy another one
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Even if you do get another one for normal use, the old one can be used for something or ebayed.

meltwater said:
Even if you do get another one for normal use, the old one can be used for something or ebayed.
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Use the credit card fix http://raspi.tv/2012/how-to-fix-a-broken-sd-card-slot-on-your-raspberry-pi I added an extra piece to help hold the card down works fine. I used crazy glue

Or solder a mSD to SD adapter like that (I broke a RPi too)
See my Photo

Will it be too much for a $35 item?

My SD card slot broke too when I tried to place my RPi in my new case.
So I folded a piece of thick paper and placed it on top of my SD card so the top of the case itself does push on the card that remains in the slot.
As long as I dont't use an other card it works

[Q] Need advice upon a hardware damage.

Ok, I made a stupid mistake while I was assembling my N4 back, after replacing the screen. I damaged one small part of the motherboard. 3 small things where ripped off ( shown on the first image ). As shown on the second image, I damaged some connection parts of the Avago 3012 Ultra Low-Noise GNSS Front-End Module. The first month after assembling back, I didnt notice any problems. But the first problem was that the battery dies when getting at 20-15% level, if forced too much with a game or any other apps that load the phone too much. After 2 weeks another problems appeared. The wifi signal became very bad. It doesnt reach all the routers around, only the ones close to me with a very good signal.Sometimes it even freezes until reboot. It stucks on same found signals and doesnt show anything else. Times by times, even the gsm band turns off completely as if its on Airplane mode. I've read online that this low-Noise chip somehow reffers to wifi and gps but can it somehow affect the battery? The second problem is that after asembling phone back, the back cover doesnt close fit enough. The left middle side of the battery became too blowed up, and it takes some space to close the cover completely so it remains a little opened. I have no ideea how it changed it's shape so suddenly. So my last question is: is there any chance if I ask a master to solder these three small pins. It will work back? Or the Avago chip is already damaged permanently?
please see attachments.

I'm not a professional at soldering but it should be possible if you find the right person to do it. Does the chip or the motherboard look damaged? As for the battery being blown up. Its most likely just bent because of all the glue holding it. If that's the case you can just flatten it out slowly.
Sent from my Nexus 4 using xda app-developers app

nazem said:
I'm not a professional at soldering but it should be possible if you find the right person to do it. Does the chip or the motherboard look damaged? As for the battery being blown up. Its most likely just bent because of all the glue holding it. If that's the case you can just flatten it out slowly.
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No, nothing is damaged, only these three conductors are ripped off. And I still have them, in a small box. But I wonder if the chip didn't get permanently damaged after some time working without these 3 elements. Cause, if so, even soldering them back will not fix the issue I guess..

Mango Polo said:
No, nothing is damaged, only these three conductors are ripped off. And I still have them, in a small box. But I wonder if the chip didn't get permanently damaged after some time working without these 3 elements. Cause, if so, even soldering them back will not fix the issue I guess..
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Yeah you're probably right. To be honest if I were in your condition, I'd just get a new motherboard off eBay or probably even a new phone. That's just my opinion though. Good luck.
Sent from my Nexus 7 using xda app-developers app

I want to update my issue. Actually, after weeks I realised that the wifi and other signals were not working because the battery was blown and the back case with all the antennas were not touching the corresponding connection pins. I solved it with replacing with an original battery from eBay. But I found out what is the real problem. The damaged pins are somehow related to the battery. When it is fully charged, aftet plugging out it goes right to 80%. Everytime. Sometimes it holds on 100% and discharging in a right way but when it reaches 20% of charge, it goes down to 1% right away. So this is the result of damaged pins. Can anybody say what are these pins doing and if it can be repaired somehow? Dont want to buy a new MB

There are few phone shops that are capable of repairing things like this, especially on nexus 4 (in your favour you still have the chips), I think you're best off getting a new phone, don't buy a new mobo it's not gonna be worth it.
Like you say, those chips missing could have permanently damaged the IC, if they're resistors to drop voltage the chip could easily be damaged.

Potential Nexus 7 Touch Screen Fix?

I just wanted to report on a possible fix to touchscreen issues. While this may, or may not, work for you, it is what I did, what I have done on three(3) total devices & it is what has eliminated touch screen issues for myself & two other individuals.
This is a work in progress & I will be adding pictures & more detailed instructions, along with progress updates as I use the device going forward. This modification (though it really isn't a mod) requires no tools & while it does entail some light dis-assembly, it did NOT require breaking any seals that would void the warranty outright. Doing this however, may very well void your warranty, I am not an attorney, I am an engineer & taking things apart is what I have been doing since before I could even crawl nearly forty years ago.
To begin, I will go into my Nexus 7 story, which may allow you to identify similar symptoms.
My Nexus 7 device worked well out of the box, with only occasional multi-touch issues. As time progressed, the issues got worse & at one point a couple of weeks ago, even single touch event started to lag or not register. My Nexus 7 is a batch from July of 2013 & I purchased it in August of 2013, so it was still under warranty. Asus issued me an RMA number, however, I hate broken things, knowing darn well that 99% of the time I can fix them myself far faster than the total time it would take an OEM to get my device back to me. At any rate, after the 4.4 update, my touch issues got even worse. Aside from missing even simple gestures & taps, occasionally the screen would look funny & once it even had a sttatic "snowy" screen that was remedied by a factory reset.
After reading a few complaints from people about screen separation & investigating the device via the ifixit tear down, I decided I would take a look before committing to the RMA process. I gently slid my thumbnail under the bezel & slowly worked it around. Immediately I could feel the clips giving way & I eventually had the back cover off. Once the back cover is off, you will notice that the screen & digitizer ribbon cable runs across the battery, pinned in between the battery tray & the inductive Qi coil on the back cover of the device. I found it is easier to ease all the sides up slightly, then remove the back by gently lifing from the sides & upper portion, with the bottom, where the USB port is, being lifted up last. Once I removed the cover, I disconnected the battery terminal clip. After disconnecting the battery, I then followed the screen ribbon cable to where it is clipped into the screens board contacts with a plastic stay. Immediately upon applying pressure to the cable ribbon stay I felt & heard a faintly audible "click" sound. On closer inspection, I discovered that poor contact was being made by the ribbon cable & furthermore, the flex in the battery tray over time, when coupled with the heat generated at that location (due to the battery & the inductive Qi coil) can slowly loosen the ribbon cable stay & affect the quality of the connection. I used a thin piece of composite material to reinforce the cable ribbon stay & used a piece of vinyl along with a non-conductive adhesive to better secure the cable ribbon & stay. I only used a tiny amount so as not to affect the ability to safely disconnect the ribbon cable without destroying it. I also did not want a bunch of adhesive heating up & spreading to other areas. Before I performed the following step, I decided to test out a few thoughts. What I discovered is detailed in the next paragraph. So, after letting the adhesive dry overnight, I reattached the battery terminal clip & started the device. It has worked flawlessly since, without any touch issues.
While I had the back cover off, I carefully reattached the battery terminal clip & while wearing Nitrile gloves & standing on a wood floor to minimize the risk of static discharge, I would turn the device on with the display ribbon cable in various states of connection. They ranged from being angled so that the far contacts would make little or limited connection, to a full connection with varying degrees of pressure applied, to simulate a good or bad connection. Sometimes the device would not boot. Other times it would boot & have a static or "snowy" screen. Sometimes it affected all touch, from single finger events to multi-touch. It also surprisingly affected the system response. Things would freeze up & apps would FC or ANR. Again, once I improved the connection, everything was back to normal & functioning perfectly. In fact, it is functioning better than it did out of the box.
While I am sure Asus would argue that this voids the warranty, I did not break any seals. No tools were needed, just the materials I chose to use & had lying around. As I also mentioned in the opening, I did this on another household members device, that only had multi-touch issues, not all the issues I had, & their device has now been functioning wonderfully for the last several days. The display ribbon clip in their device was not completely detached on one side like mine, but it was fairly loose all the same. The third device was a friends & it was having mostly single touch issues, though he said multi-touch issues would come & go. We ran through the steps on Hangouts & his ribbon cable was in its place, but as he removed the back, the stay clip fell out. His device is also functioning normally now & he has not reported any further touch screen issues.
Since the problems people are having are oftentimes different & not consistent, it very well could be that this is exactly the issue. I would surmise that it could be the very reason why Google & Asus have been VERY, VERY quiet about the issue, since it would require returning the device for a fix, not simply a software fix.
If you try this, I urge you to be patient & use the utmost care when removing the back. While there are no cable attached to the back, you never want to force things. Be gentle & when you find the right spot for lifting, you will know it. It is not difficult & it is relatively harmless. I would caution you to use gloves & minimize the risk of discharging static electricity. I also recommend using gloves because copper sheeting is used in a couple spots & if you have ever worked with copper sheeting in electronics, you know that stuff grabs oils from your skin like crazy & you will end up leaving evidence in the form of an ultra-clear fingerprint that almost no solvent will remove. (Don't use solvents in your device unless you are a daredevil or know what you are doing).
So, that is my story & what worked for me & my small group. Ultimately, these devices are ours & it is up to each of us individually to pursue the fixes or mods that suit us best. That also means that the responsibility & consequences belong to each of us as individuals. What steps you are willing take to remedy any issues you may have with your device are decisions you need to weigh. This is XDA, where people take risks, assume that the are eventually going to brick their devices & make real modifications to devices (which this really is not). If you break something because you needed every single little detail & step spelled out for you, that's not my problem. Again, this is XDA, not some ragtime blog & anything you do here usually requires you to be able to think for yourself at some point.
Lastly, I will try to get to a step by step with pictures as soon as I can. I am not a developer, I am not a student & I don't have a ton of time to devote to answering questions. I will do what I can, when I can, but between the holidays & my job as a mechanical engineer (two large hospital projects are going on right now that take up 95% of my day), I have very little time right now. This post is the result of a large lunch review meeting, not free time, so it will probably take some time to get everything up. I have to recreate most of it, since I really figured on RMA'ing my device. I never expected this to work as it has for me.
Thanks.

Thanks for the post! If I know the issue I don't mind taking it apart to fix it.
I RMA'd it once as I didn't feel I should have to fix it, but it was such a pain jumping through all the hoops only to get it back with docs stating "OS reset" and finding the problem 30secs after resetting up my account.
I have another RMA but have waited shipping it for an update to KitKat in the hopes that it would help. It hasn't. I'll have to see if I feel up to trying your fix.
Thanks!
Sent from my Nexus 7 using xda app-developers app

No one else tried this?
I barely have screen issues, but I am curious to know if this works, after replacing my N7 2013.
Thanks and regards,

Video tuto
Need a video tutorial. I have both touch and multi reboot issue. sometimes there are 2-4 reboots occur during rebooting of system. problems persist even after kitkat update. I think this is the cause that causing me such multireboot issue.
Hope this will solve my problem. i am out of USA country so i cant give for a RMA. But need a solution look like that.

Thanks gsleon3. It always sounded like a hardware bad connection type of issue so I'm not surprised.
The problem with rma is that I'm not sure their repair techs would really fix anything. The cause may not have been made known even to their own techs because it would leak out and might start a class action law suit. My 2012 nexus 7 never had any of the touch issues my 2013 version is showing. Quality control has slipped with the 2013 version.
Any lawyers here?

Video might be tough, but I'll try to get to it. I will try to dedicate some time this weekend. I was thinking Saturday night, but I just learned that the Day of the Doctor is being simulcast in 3D near my house. So it may have to wait till Sunday so I can let my inner geek out.
Sent from my Nexus 7 using XDA Premium HD app

GSLEON3 said:
Video might be tough, but I'll try to get to it. I will try to dedicate some time this weekend. I was thinking Saturday night, but I just learned that the Day of the Doctor is being simulcast in 3D near my house. So it may have to wait till Sunday so I can let my inner geek out.
Sent from my Nexus 7 using XDA Premium HD app
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After what you shared with us, please DO enjoy your 3D simulcast of THE Doctor. We will be patienly waiting for your video.
Regards!!

nearly an inch long strip at the top of my screen stopped responding to touch i sent it back only had it for 6 days..

Tried this out. My clips were seated properly but I can see the reasons why they pop out.
Took about 5 mins from start to finish to test. Good job.

OP, during your disassembly of the device did you notice any random internal parts that could possibly be applying pressure to the screen from behind it? I ask because my otherwise perfect nexus 7 got a random blue dot in the middle of the screen and I know from past experience that that's typically the result of pressure physically warping the lcd panel.. otherwise the only other thing I can think of is that the lcd is being permanently damaged by the on/off case magnet but that's unlikely. or maybe heat that's causing the battery to flex into the screen. It's extra frustrating because I've had the nexus in a loose fitting hard case and the hard front flap should prevent the kind of pressure damage that would cause those blue marks... sigh.

ibebyi said:
OP, during your disassembly of the device did you notice any random internal parts that could possibly be applying pressure to the screen from behind it? I ask because my otherwise perfect nexus 7 got a random blue dot in the middle of the screen and I know from past experience that that's typically the result of pressure physically warping the lcd panel.. otherwise the only other thing I can think of is that the lcd is being permanently damaged by the on/off case magnet but that's unlikely. or maybe heat that's causing the battery to flex into the screen. It's extra frustrating because I've had the nexus in a loose fitting hard case and the hard front flap should prevent the kind of pressure damage that would cause those blue marks... sigh.
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Well if it is pressure, I've found on past devices, sometimes batteries start expanding over time, like they have a fat belly.

Touchscreen possible fix
Started reading a bit on Google Products Forum and found a guy who said that the touchscreen problem can't be fixed by software.
So he took the back of the tablet off and found that the problem lies on the screen digitizer cable not being clipped to the connection port correctly. He disconnected the cable and connected it back again, and now his touchscreen is working perfectly.
I do not want to try it because I don't want to risk anything, but can anyone brave enough try this?:fingers-crossed:
Here's the guy's profile: http://productforums.google.com/for...ioWy9HdPwsowoDCuOz8SS9uR9nzVnPi6g2kSAInwwCj94 (it's the post form Nov 19)

LittleConfucy said:
Started reading a bit on Google Products Forum and found a guy who said that the touchscreen problem can't be fixed by software.
So he took the back of the tablet off and found that the problem lies on the screen digitizer cable not being clipped to the connection port correctly. He disconnected the cable and connected it back again, and now his touchscreen is working perfectly.
I do not want to try it because I don't want to risk anything, but can anyone brave enough try this?:fingers-crossed:
Here's the guy's profile: http://productforums.google.com/for...ioWy9HdPwsowoDCuOz8SS9uR9nzVnPi6g2kSAInwwCj94 (it's the post form Nov 19)
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The author of that post is the op of this thread.

sfhub said:
The author of that post is the op of this thread.
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Whoops, sorry, didn't realize:silly:

ibebyi said:
OP, during your disassembly of the device did you notice any random internal parts that could possibly be applying pressure to the screen from behind it? I ask because my otherwise perfect nexus 7 got a random blue dot in the middle of the screen and I know from past experience that that's typically the result of pressure physically warping the lcd panel.. otherwise the only other thing I can think of is that the lcd is being permanently damaged by the on/off case magnet but that's unlikely. or maybe heat that's causing the battery to flex into the screen. It's extra frustrating because I've had the nexus in a loose fitting hard case and the hard front flap should prevent the kind of pressure damage that would cause those blue marks... sigh.
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Ive disassembled the device too and it has nothing specials with exception that few flex cables located right unddr the cover. Not sure if one of them is belongs to touchscreen though
Also i got this blue dot too,and one pink as well. In middle of screen.

Tim4 said:
Ive disassembled the device too and it has nothing specials with exception that few flex cables located right unddr the cover. Not sure if one of them is belongs to touchscreen though
Also i got this blue dot too,and one pink as well. In middle of screen.
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I got a blue smear too, but near the edge of the panel but since it's not very visible..I'm just gonna ignore it..

GSLEON3 said:
Video might be tough, but I'll try to get to it. I will try to dedicate some time this weekend. I was thinking Saturday night, but I just learned that the Day of the Doctor is being simulcast in 3D near my house. So it may have to wait till Sunday so I can let my inner geek out.
Sent from my Nexus 7 using XDA Premium HD app
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Absolutely no problem, GSLEON3, with profound gratitude I assure you that we really appreciate your engineering work discovering the problem. Take your time and we will patiently wait until you have the time to prepare a more complete review.

Wow! If it is so easy, I don't understand what the Asus support makes everyday.
Thanks for sharing it.

Sound really greate and promising. If you could, a tutorial video would be perfect for us, please

sfhub said:
Well if it is pressure, I've found on past devices, sometimes batteries start expanding over time, like they have a fat belly.
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If higher amperage is used there is an increased risk of expansion due to the higher excitation in the Li atoms. You will increase the wear of it too.
So if possible always use lower amperages to charge batteries(preferably around 500mA), you can limit the charging IC using a lower output charger or your computer's USB port.