[Q] My tablet boots up , works fine , but LCD is off :( - Nexus 7 (2013) Q&A

Hello guys ,
I had a terrible situation today I wish anyone can help me wake up from this nightmare as soon as possible
My tablet is working fine for about 15 months and today I accidentally applied a pressure on the center of the tablet screen
then I found it off - I mean the screen - despite the tablet is up , tried to restart it , the LCD stays off although I can hear the sound of messages , the sound of touching the keypad of the password panel , so I am sure the touch is working and everything is well functioning , but the LCD is dead .
By the way there's no cosmetic damage on my tablet at all and the screen has 0 damage
Can anyone suggest me a solution or a diagnosis ?
Thanks in advance and sorry for my terrible English .

a7medmo7eb said:
Hello guys ,
I had a terrible situation today I wish anyone can help me wake up from this nightmare as soon as possible
My tablet is working fine for about 15 months and today I accidentally applied a pressure on the center of the tablet screen
then I found it off - I mean the screen - despite the tablet is up , tried to restart it , the LCD stays off although I can hear the sound of messages , the sound of touching the keypad of the password panel , so I am sure the touch is working and everything is well functioning , but the LCD is dead .
By the way there's no cosmetic damage on my tablet at all and the screen has 0 damage
Can anyone suggest me a solution or a diagnosis ?
Thanks in advance and sorry for my terrible English .
Click to expand...
Click to collapse
First, you could test it on a tv with an HDMI adapter. If the screen shows up, it means the circuitry is good. Then, take the tab to a dark room, shine a flashlight on the screen to see if the images are there with unlit background. If they are, the backlight has gone bad.
If nothing is seen, you'd want to pop off the back cover, and inspect the amber ribbon running the length of the battery at both ends.
The end connecting to the motherboard snaps on and off, which is more likely to come off, seeing as the silver EMI strip is not designed to hold the connector down.
The other end requires that you remove the board at the bottom for inspection. It's unlikely that this end should loosen since it's "latched" down. If the connections are good, more likely than not the lcd is out. That being the case,the only thing to do is to replace the touch/lcd combo since there is no way I know of that one can remove an original screen without cracking it. The tape Asus uses binds too strongly and the touchscreen too brittle.

a7medmo7eb said:
Hello guys ,
I had a terrible situation today I wish anyone can help me wake up from this nightmare as soon as possible
My tablet is working fine for about 15 months and today I accidentally applied a pressure on the center of the tablet screen
then I found it off - I mean the screen - despite the tablet is up , tried to restart it , the LCD stays off although I can hear the sound of messages , the sound of touching the keypad of the password panel , so I am sure the touch is working and everything is well functioning , but the LCD is dead .
By the way there's no cosmetic damage on my tablet at all and the screen has 0 damage
Can anyone suggest me a solution or a diagnosis ?
Thanks in advance and sorry for my terrible English .
Click to expand...
Click to collapse
a7medmo7eb - We're very sorry to hear of this. Kindly email us at [email protected] with this copied problem description along with the serial number of your tablet and we will do our best to provide you with troubleshooting and servicing options.
If you have any further questions, comments or concerns please do not hesitate to let us know. We will be more than happy to assist you. Once again, thank you for choosing ASUS products and services.
Thank you.
-In Search of Incredible-
Technical Support Department
http://www.asus.com :: http://service.asus.com/

Related

.:: HELP Appreciated ::. Universal - WHITE SCREEN Problem...

.:: HELP Appreciated ::.
Hello Tech GURUS,
I returned from a long tour (I kept my XDA EXEC at home) & found that my XDA EXEC has got a problem of WHITE SCREEN!! Nothing is Displayed!!
May be brother's childrens or anyone of my friend accidentally did it in my absence(Sorry I'm NOT Sure). May be they pivoted (Turned) the screen in a WRONG DIRECTION!
That doesn't matter WHO DID IT, But the problem screwed my head & I started to trace the problem.
Symptoms:
1) Only WHITE SCREEN(with LCD Backlight), Nothing Else.
2) Charges perfectly through USB & also from Charger.
3) When I connects it to ACTIVE SYNC, it Syncs fine & I can able to explore the files/folders. Copy from & to the handset memory is also works fine.
4) Tried to enter into BOOTLOADER Mode(by pressing Light+Power+Reset), there also got a BLANK SCREEN (NO LCD Backlight).
5) TOUCH SCREEN detects TAPs & make sounds (Tick Tick), That indicates Touch Screen Working fine.
6) Qwerty KeyBoard Works fine. I don't know at what extent, since I can't see nothing on screen. But when I press a key on QWERTY Kbrd, it sounds Tick.
7) Transfered(Beamed) a CONTACT from my another XDA IIi & found Its accepted the beamed data.
8) Volume Up/Down make sounds (Tick, Tick...).
What I Did:
1) Removed the Battery & re-inserted & tried to BOOT it. NO result, just a WHITE SCREEN.
2) Purposely Tried to Rotate the Screen in Wrong Direction to test the loose contacts of co-axial cable.
3) Lastly Dis-Assembled the whole handset (Removed all parts 100%) & Re-Assembled it. But the Problem remains SAME.
4) Dis-Assembled again & this time I tested the LCD Co-Axial Cable's connectivity from MainBoard side connector to LCD Side Connector. There are 2 Cables which connects to LCD. One is 30 Cores Cable & Second one is 40 Cores Cable.
I Successfully tested 30 Cores Cable(Actually it used only 28cores cable, remaining 2 points at connector are DUMMY) & Second 40 Cores Cable I'm UNABLE to Test Since I lost my patience while connecting my Testing Meter to Hair Line sized cores & in just an 10mm connector got 40 cores!!!
5) Observed all cores which passes through SCREEN ROTATOR BASE Hinges & found there is NO physical Damage or CORE CUT.
CAN ANYONE HELP ME TO SOLVE THIS WHITE SCREEN PROBLEM?
IS IT A HARDWARE BASED PROBLEM? OR SOFTWARE BASED?
IS IT A PROBLEM WITH DISPLAY CHIP(IC) ON MAINBOARD?
JUST CONFUSED & SEEKING HELP FROM TECH GURUS.
THANKS IN ADVANCE.
HellCrusher.
Hi hellcrusher,
CAN ANYONE HELP ME TO SOLVE THIS WHITE SCREEN PROBLEM?
IS IT A HARDWARE BASED PROBLEM? OR SOFTWARE BASED?
IS IT A PROBLEM WITH DISPLAY CHIP(IC) ON MAINBOARD?
Click to expand...
Click to collapse
This seems to be a hardware problem. Check connectors in the display housing first. This unit is quite easy to disassemble.
Before you start, you should have a look in the universal SERVICE MANUAL to check out how it gets torn apart .
If all connectors to the display are right in place, but your display still shows nothing ...open the universal body too.
Folow the steps in the manual
Regards,
scholbert
White Screen
Hello, this is my first post. May I first just say how great I think this site is, the guides on here really are useful to beginners.
With regard to the white screen, not sure if this helps, but during dismantling of my various PDAs, I managed to connect an LCD ribbon incorrectly, I kind of forced it in & folded one contact over, resulting in white screen. Disconnected, straightened & refit. Hey presto, works like a charm. Hope this helps.
I had the issue, had to buy a new flat cable
It is rare to actually see the damage to the cable, because the damage is inside the insulation....
Best regards!
On the topic...
Hello!
I have a similar issue with my Orange SPVm5000, except that mine will work for up to a minute after a hard reset before going to a white screen.
If I hard reset pressing the left+right+reset keys, the device shows the boot screen and sometimes ever goies into the initial setup but then all of a sudden it goes white. I've opened up the screen and verified and reconected all connections but still the problem persists. Also I've noticed that its not any action I make that causes it; more like a heat/timing issue. Per advice above, I will check the connections in the body but does anyone have any other ideas?!?
Thanks!
Greg.
I have a similar problem. The story;
I purchased an orange branded M5000 on flebay described as second hand in fantastic condition blaa blaa.
When the phone eventualy turned up it had no manual, the outer sleeve of the box was missing and the wrong usb cable was supplyed (one of those larger usb plugs you usualy get for printers.
I have shedlooads of cables and rely wasn't bothered about any of these problems at the time and went about charging the phone (it was totaly flat)
When fully charged I stuck my sim in and poweded her up the phone works fine in portrate and landscape view but as you rotate the screen so it is inline with the keyboard the screen fades to white about half way.
I contacted the seller who basicly told me the phone is second hand so sold as seen!?!?!?
I have flashed various roms on it to see if it was a software fault but nothing.
I think this phone had been in storage as its battery was totaly flat and incorrect accessories suggest the seller didn't check it before shipping. So I believe there is a problem with this phone that occurs when stored.
Sorry for the long post
Have you flashed any rom or just had this problem ...
my conclusions:
1. If you have flashed a new rom to your universal, try to reflash the original rom, it works for many users.
2. If you havent flashed any rom, maybe its a hardware problem.
2.1 If you just used it in a bad way, (ie: rotate screen in wrong way), dissamble it..
2.2 If you have let it on a heat, weat, etc.. place.. maybe the mainboard got a cut-circuit.
Saludos
I tryed a couple of popular WM6 roms (I forget whitch ones) and returned to the genuine Orange WM5 rom. So I doubt its a software fault.
As far was extreme conditions go the phone was well packaged when posted I will gove that to the seller SO unless the eposure happened before shipping I don't think thats to blame ether.
I think the wire in the swivle joint is failing and will continue to get worse as the joint is exercised.
Try to clear it up..
Hi there,
i made a lot experiments with the uni, so let me try to focus what's wrong:
First LVTato's Orange SPVm5000
...
If I hard reset pressing the left+right+reset keys, the device shows the boot screen and sometimes ever goies into the initial setup but then all of a sudden it goes white. I've opened up the screen and verified and reconected all connections but still the problem persists. Also I've noticed that its not any action I make that causes it; more like a heat/timing issue. Per advice above, I will check the connections in the body but does anyone have any other ideas?!?
Click to expand...
Click to collapse
Sounds like the image could not be loaded completely.
The framebuffer is initialized correctly after cold boot, but afterwords booting into wince fails.
So maybe it's pure software issue (flash content is corupt -> image is broken).
Other possibility: Some region of your flash is damaged (more hardware related).
jahshappybus' Orange SPVm5000:
...
poweded her up the phone works fine in portrate and landscape view but as you rotate the screen so it is inline with the keyboard the screen fades to white about half way.
Click to expand...
Click to collapse
Looks to me like a typical cable issue. Maybe someone twisted the screen the wrong way!
So this is what i guess at least.
Regards,
scholbert
White screen
99 % of these white screen faults is a typical cable issue. And you don't have to twist your screen wrong way to have this problem, also.... just twist it too often First you have to see if the device is working, apart the screen.... call the number of your phone see if it is just screen related problem. Broken display cable will leave your device oprational, you just don't see the image.
I know it is "less painfull" for people to think it is a software problem.... (The "it would not happen to me" syndrome ) but sometimes things just brake, and moving parts are most risky...
The fact you don't see the damage is of no importance due to the size and nature of the damage. Don't expect to see broken wires in the cable. And even if you check the cable by you instrument, somethimes it will show you it's ok, but in some positions it will loose contact.
Try a different cable... that way you'll be sure.
Best regards, and all the luck!
"Looks to me like a typical cable issue. Maybe someone twisted the screen the wrong way!"
I agree and luckily, finally paypal do as well.
It is being boxed up to a red faced seller as we speak.
A happy ending for me (speaking to soon?)
i hav the same problem as u "HELLCRUSHER" and i flashed also but was not able to cure
still hav this white screen ..
Found this link for some where selling the screen cable assmebly.
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=300254338133
Hope this is of use.

Display stay white after touch screen substitution

Hallo to all!
i've already tryied to search this topic in all the forum, but didn't find anything...pls tell me if something similar already exists!
so my problem: i have a touch pro 2 (RHOD100), and the last week i broke the touch screen (due to accidental heavy pression on it)...all works, but no TS function...
so (here starts my trouble) i decide to change by myself...i bought a new one (only TS) on ebay and make the change....
no problem with the hardware change, but now my display stay white...
some consideration:
- OS start with no problem (start sound and button sound)
- all flats are plugged correctly (checked many times)
- the backlight of the lcd works well (low light after some time)
some help? maybe i forget something important?
thanks a lot in advance to any helpers!!
db491 said:
Hallo to all!
i've already tryied to search this topic in all the forum, but didn't find anything...pls tell me if something similar already exists!
so my problem: i have a touch pro 2 (RHOD100), and the last week i broke the touch screen (due to accidental heavy pression on it)...all works, but no TS function...
so (here starts my trouble) i decide to change by myself...i bought a new one (only TS) on ebay and make the change....
no problem with the hardware change, but now my display stay white...
some consideration:
- OS start with no problem (start sound and button sound)
- all flats are plugged correctly (checked many times)
- the backlight of the lcd works well (low light after some time)
some help? maybe i forget something important?
thanks a lot in advance to any helpers!!
Click to expand...
Click to collapse
When you changed the touch screen did you remove the flex cable that connects the upper half of the phone to the motherboard? Are you sure you didn't break the LCD screen itself?
hallo,
yes i remove the flat, and plug back again where changed - when i press on the TS (with white screen) i can ear the "tap"
i cannot be sure, but it light on...i think is enought...or not?
thanks for you're help!
db491 said:
hallo,
yes i remove the flat, and plug back again where changed - when i press on the TS (with white screen) i can ear the "tap"
i cannot be sure, but it light on...i think is enought...or not?
thanks for you're help!
Click to expand...
Click to collapse
It looks like like either the flex cable got damaged or it's not plugged right. It could also be the LCD flex, where lcd plugs into the small connectors under the four buttons at the bottom of the touch screen not being connected properly. Did you lift the small levers where the flex cables go into the mother board or where the lcd/touch screen gets plugged in or did you just push them in?
i lift the lever where pull out the flex, and pull it down when restore the connection... and i'm almost sure about connection, also because them are so "stricted" in the plug himself...
but i find really strange that the lcd is on (completely white), you don't think so?
also if it is damaged, should be not white...or maybe, as you say, a flat problem?
this evening i will re-open it for a check...i don't know what else do...
maybe i will try to buy a complete kit (TS+lcd)...
i will surely let you know
db491 said:
i lift the lever where pull out the flex, and pull it down when restore the connection... and i'm almost sure about connection, also because them are so "stricted" in the plug himself...
but i find really strange that the lcd is on (completely white), you don't think so?
also if it is damaged, should be not white...or maybe, as you say, a flat problem?
this evening i will re-open it for a check...i don't know what else do...
maybe i will try to buy a complete kit (TS+lcd)...
i will surely let you know
Click to expand...
Click to collapse
The screen being white, means it's receiving power but not video signal. There coud be different reasons for that. It happened to me couple of times. What I did was lift the connector lever, pull the flex connector out (where it connects to the motherboard) just a tiny bit and secure the connector with the lever and it worked. If the flex cable is going bad it could be that just one line or two are going bad not the whole thing, thus still delivering power but not video signal.
If your problem is with the flex buying a new screen/digitizer will not fix it. When you screen is white does it go out if you slide out the keyboard?
hallo,
sorry for late answer,
i make some test with flat, but the result is the same...
the screen always stay white, but i can ear the start sound, the pression sound, etc...so it seems it's just the lcd...
maybe i can try to buy a complete set lcd+ts?
thanks for answer
db491 said:
hallo,
sorry for late answer,
i make some test with flat, but the result is the same...
the screen always stay white, but i can ear the start sound, the pression sound, etc...so it seems it's just the lcd...
maybe i can try to buy a complete set lcd+ts?
thanks for answer
Click to expand...
Click to collapse
I could be wrong, but I think it's the flex cable that is bad not the LCD screen itself. The flex cable has several small thin lines, what is happening is the power is getting to the LCD screen but the video signal is not, so most probably one of teh video signal lines is broken.

where to get samsung galaxy 3 i5801 lcd display?

hello guyz!
my samsung galaxy 3 i5801 display got damged recently!so i took my cell to local samsung cervice center! he said that the display screen is not available! so he replaced my damaged screen by a duplicate screen! the problem with this screen is it shows different colours when seen from different angles(basically its a TFT screen i guess)! this really hurts my eyes ! so i am planning buy a new screen where can i get one?
i search them on ebay and i found some!but i could not decide which one to get! all are for i5800 and mine is i5801 ! i guess it dosent really makes any difference! As i am not allowed to post urls please search "Display Screen For Samsung Galaxy 3 i5800" on ebay.com and tell me which one to buy!
Thank you!
How much did you spent on replacement LCD ?
Did samsung guys sold you a duplicate/non-company authorized screen, this would be the strangest thing I heard about any company service center.
I don't think you should be buying it off Ebay without knowing about details of screen and a couple of reviews about it.
I recently saved my Galaxy 3 as it suffered from non-functional touch screen and a broken volume button connector, had to fully dis-assemble and do the stuff to fix it.
ghpk said:
How much did you spent on replacement LCD ?
Did samsung guys sold you a duplicate/non-company authorized screen, this would be the strangest thing I heard about any company service center.
I don't think you should be buying it off Ebay without knowing about details of screen and a couple of reviews about it.
I recently saved my Galaxy 3 as it suffered from non-functional touch screen and a broken volume button connector, had to fully dis-assemble and do the stuff to fix it.
Click to expand...
Click to collapse
i mean to say that screen was a old one! he didnt had galaxy 3 display but a same size another display which was ages old
but i was really desperate at that time so bought it :/
thats why am asking you which display to buy and from where?
hey dude!!!! please help me out....... saw your previous discussion about your faulty touch screen and soft keys which is due to the problem in the digitizer...... me too experiencing the same problem in my i5801..... my lcd screen is fine and clear...... but the touch screen doesnt respond properly to the touch input neither the soft keys..... the problem started when the phone accidently fell in water...... but i had saved the phone by taking out the moisture some how...... from then this problem started...... everything works fine..... except this touch and soft keys...... got to see tat you have managed to repair it.... kindly tell me the solution...... please boss!!!!!:crying:
Raghsin said:
hey dude!!!! please help me out....... saw your previous discussion about your faulty touch screen and soft keys which is due to the problem in the digitizer...... me too experiencing the same problem in my i5801..... my lcd screen is fine and clear...... but the touch screen doesnt respond properly to the touch input neither the soft keys..... the problem started when the phone accidently fell in water...... but i had saved the phone by taking out the moisture some how...... from then this problem started...... everything works fine..... except this touch and soft keys...... got to see tat you have managed to repair it.... kindly tell me the solution...... please boss!!!!!:crying:
Click to expand...
Click to collapse
Hi are you still want to use your Samsung I5801? My phone(I5801) display got damaged. Please let me know. You can email me at "Sanjayforweb (at) gmail (dot) com

I think I destroyed my HTC One X

Hey guys,
I think I destroyed my HTC One X. I just bought it a month ago from Ebay, and it worked flawless. At some point the display just turn off. I restarted the phone, heard the sound when it starts and even the softkeys worked. But the Display was still off. After after a few restarts the display turned on for a minute, just to freeze after that and turned off again. The phone was still on though.
However I've read a bit around and found out that it could be a cpu heat problem, which could be true because my phone was way too warm sometimes. So I removed the display and put a tiny little bit thermal compound on the cpu. Somehow I managed to rip off the connection cable to the display ... also I managed to rip off the little black cable near the soft keys. The soft keys still work though.
When I start the phone the starting sound comes, the softkeys blink when I restart the phone, you hear the volume buttons etc. So it seems the phone is fully working. Just the display or touchscreen is damaged.
Some pictures:
http://i.imgur.com/LQ4M2Gb.jpg
http://i.imgur.com/uWZTfNe.jpg
So, what can I do?
Do you think I could just send it to this site http://www.directfix.com/product/REP-0063.html and let them repair it? Or did I destroyed my phone too much already?
Thanks in advance.
Well,the top cable is ripped off,you can't do anything at this point.The bottom one just seems out of slot as far as i can tell from the pics.
Basicaly you can send it to the repair shop,but i don't think that you can only change the cables,don't really know what to say...Could cost you some to repair it.
I don't want to only change the cables. I want to use this full repair service:
"HTC One X Complete Screen Replacement Service (Includes LCD & Digitizer)".
So they change the cables and put on a new LCD & Digitizer as far I understand.
But do you guys think they will put back the other cable back in slot too?
Please just answer, do you guys think they can repair it if they put on a new screen & digitalizer?
I don't see why not,you can also contact them and explain them the situation.Those cables are quite easy to put back with the proper tools so you don't have to worry about it.

Touch not working after screen replacement

Hi guys
I wanted to ressurect my old moto g5 (cedric xt1676) which i was not using for a longer time. Screen was cracked but touch worked just fine. I bought screen replacement assembly and connected it. Screen (picture) is working fine but touch is not working at all. Is there any way to solve this problem? What i found untill now is that after some update motorola/lenovo disabled support for 3rd party screens - one i bought is stated to be "original" but i doubt it.
I did a factory reset before removing old screen, after connecting new one, start menu was in russian (i can't read bukvas so its a guess ), after another reset it is back to english but touch is still not working. There is a padlock symbol in top left corner of the screen.
I just wanted to fix the old phone to give it to the family member but now i spent so much time on this issue that i want to fix it very badly.
Hope that someone can and want to help me.
At the end of the day it's all down to if the correct parts were used and if it was fixed correctly. Nothing we can really help with here.
It's Russian ransomware screen
Seriously always use OEM parts.
Make sure all connectors are intact; remove and inspect contacts. Make sure you didn't miss a ground or data connection; sometimes they are just contact points between assemblies. Using the wrong length screw may cause a missing contact pathway. Assemble exactly the way it was.
The mobo may have been damaged when the display was broken. High G impacts can internally damage chipsets and crack solder joints. Flexing a multilayered mobo can break internal traces.
Sorry to hear that. Anyway - i have nothing to loose so i would try with olderversion of android - is it possible to instal without working touch in the phone?

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