Galaxy Tab Pro 10.1 Screen Backlight Issue?? - Galaxy Tab Pro 12.2, 10.1, 8.4 Q&A, Help & Trouble

Good afternoon all, I'm wondering if anyone can help.
My Galaxy Tab Pro 10.1 developed an issue with the screen (after travel - where it may have been knocked around a little)...
The tablet boots up fine and the screen appears to work normally.
However once the screen times out and switches off, or the screen is switched off by the power button, it is not possible to get the screen back on.
It appears that it's just the backlight that is not coming back on?.... as the screen responds to touch (you can here the pin code buttons being clicked).... but can't see anything at all on the screen.
Rebooting the tablet from here makes the screen come back on as normal - so as it works like this and just does not come back on after being 'on staandby' I thought it might be a software issue... I did a full factory reset but unfortunately the problem is still exactly the same.
I've had the tablet to bits to see if I could see any cables loose or anything - but everything looks ok - I think (Although it's the first time I've had one apart and wasn't 100% sure which cables were for the screen)
There was nothing obviously disconnected or loose.
Has anyone come across this fault before or can anyone provide any more guidance? Maybe a particular cable to check or how to check it?
Many Thanks,
Tom Leitch

I have the same issue, but I was able to fix it entering the factory mode and pressing the sleep button. That was possible using the calculator and entering (+30012012732+ and then entering *#0*# to get to test mode.
The problem now is that I'm using lineageOS so I don't know how to get to that menu or trigger that sleep button. Anyone?

Related

XDA Orbit Screen Problem

Hi Guys.
I've had my orbit for about 3 weeks now, and its been perfect. I had a spare 512mb microSD card lying about so I used that, but my 2Gb microSD card came in the post yesterday.
I put the card into the phone, and then plugged the phone into my computer via USB. The screen turned off, and no matter what I did, it wouldn't come back on.
I reset it using the small button on the side (sticking my stylex pen into it) and it restarted itself, showing the splash screen no problem, but as soon as you would expect the Today screen to show, the screen goes off. It get's weirder, because if I hold down the camera button to turn that on, the screen switches itself on, and you can use the camera no problem. If i hit the windows key, the menu appears, but if I try clicking an icon, the screen goes dead again.
Also, sometimes (not always, don't ask why) if I leave it for a couple of minutes, the screen slowly appears, as if the backlight is very very dim. But the second i tap anywhere, or touch a button, it goes off again.
I can still answer calls, and my alarms still go off. The phone seems to work perfectly, but just not the screen. I think that it might be the backlight having been turned so far down its off, but I don't know how I would go about reseting that.
Sorry for the long story, but any help would be greatly appreciated.
Cheers
have you tried to make a hard reset?
Man I had the exact sane issue. Its to do with the backlight. I had to angle the screen to try and see anything on it, then changed the backlight to full and made sure it didnt switch off after certain time, everything fine since then. dont know how it happened.
exactly like fubofo wrote,try to unplug,screen should be visible again, check backlight prop.-and plug it in.
i have the same problem this appears sometimes.I think this is a damn bug that appears randomized.It happend to me like 6 times.I have the o2 xda orbit with german o2 rom.What's about yours? it dims the light under the normal makeable settings this sucks.And the camera works because the light settings goes automaticly to the highest settings in camera mode.
Hi guys,
I remember having that problem but it was when I tried some programs, including HTC X-button and another called Invisible Shooter. I haven't got any further incident after uninstalling them.
Do you think what you've encountered with may also link to some program you've installed?
BUSPBP
Totally confirmed! Had same issue after replacing a touch screen. Thanks, guys, for a clue!

[Q] Screen wont turn on after it turns off. ATT Tilt 2

Everytime I boot my phone up, it works fine up until when the screen goes into sleep mode. Once it goes into sleep mode I cannot turn the screen back on, it stays black. The keyboard, end and answer key lights show up when I press the power button but the screen just stays black no matter what button I press.
I end up having to either take the battery out or using the stick to press the reset button on the side in order to get the phone to where I can see the screen again. I have adjusted the settings to where the screen doesnt go into sleep mode and the screen just stays on but that drains my battery. I want to be able to have my screen go off so I can save power but if it goes off it wont come on again until I reboot.
I have done a hard reset. This problem started happening to me when I started using the Energy Rom but I've even flashed different Roms and the problem still exist.
Somebody please tell me what's wrong! I need help! This is a big annoying problem to have. Thanks.
is this problem occurring when you slide the keyboard out?
i had the t-mobile touch pro2 with this problem.
the screen would die when the keyboard was out and not come back.
if this is the case, what i did was...
well. obviously not open the keyboard fully.
but if i accidentally had.
instead of pulling out the battery, i waited...
till the screen 'naturally' went to sleep.
than i would pull out the stylus or press power button
and the screen would come on.
sh4d0w86.
sh4d0w86 said:
is this problem occurring when you slide the keyboard out?
i had the t-mobile touch pro2 with this problem.
the screen would die when the keyboard was out and not come back.
if this is the case, what i did was...
well. obviously not open the keyboard fully.
but if i accidentally had.
instead of pulling out the battery, i waited...
till the screen 'naturally' went to sleep.
than i would pull out the stylus or press power button
and the screen would come on.
sh4d0w86.
Click to expand...
Click to collapse
Yes the problem still exist even when I slide the keyboard out. Once the screen goes off, that's it....pressing the power button to get it out of sleep mode, sliding the keyboard, I press all buttons and nothing works. The only thing that "works" to get the screen back on is removing the battery or using the stylus to press the reset button.
When sliding the keyboard out the keys light up but the screen doesn't come on, also pressing the power button lights up the end and answer keys without the screen coming on.
themasterhook2000 said:
Yes the problem still exist even when I slide the keyboard out. Once the screen goes off, that's it....pressing the power button to get it out of sleep mode, sliding the keyboard, I press all buttons and nothing works. The only thing that "works" to get the screen back on is removing the battery or using the stylus to press the reset button.
When sliding the keyboard out the keys light up but the screen doesn't come on, also pressing the power button lights up the end and answer keys without the screen coming on.
Click to expand...
Click to collapse
so. whenever the screen goes out, period, you cant get it back?
or the screen goes out and cant get it back once you slide the keyboard out?
if it is only when sliding out the keyboard...
try not opening the keyboard fully on the right side.
on my rhodium, after that point, the screen goes out.
sh4d0w86.
sh4d0w86 said:
so. whenever the screen goes out, period, you cant get it back?
or the screen goes out and cant get it back once you slide the keyboard out?
if it is only when sliding out the keyboard...
try not opening the keyboard fully on the right side.
on my rhodium, after that point, the screen goes out.
sh4d0w86.
Click to expand...
Click to collapse
Yes, period. Also, you know when you put your face to the phone during a call and the screen goes off so your face wont press anything on the screen? It doesn't come back on from that either once I end the phone call, it just stays black. I'm assuming you don't have any other suggestions. This Sucks
themasterhook2000 said:
Yes, period. Also, you know when you put your face to the phone during a call and the screen goes off so your face wont press anything on the screen? It doesn't come back on from that either once I end the phone call, it just stays black. I'm assuming you don't have any other suggestions. This Sucks
Click to expand...
Click to collapse
: / sorry. i am unsure.
maybe you have a lose connection?
sh4d0w86.
This has to be a software issue but I don't know where to start. I'm surprised nobody else has encountered this problem. I've grown frustrated of this issue because I don't understand why it's doing this. I have had the phone for almost 6 months only dropping it once 4 months ago and it wasn't a strong damaging drop that would affect anything inside. I guess I'll just have to go last resort and call warranty to swap the phone out. Thanks for the help.
Same problem
themasterhook2000 said:
This has to be a software issue but I don't know where to start. I'm surprised nobody else has encountered this problem. I've grown frustrated of this issue because I don't understand why it's doing this. I have had the phone for almost 6 months only dropping it once 4 months ago and it wasn't a strong damaging drop that would affect anything inside. I guess I'll just have to go last resort and call warranty to swap the phone out. Thanks for the help.
Click to expand...
Click to collapse
My phone also dos not come back on, when I put it in out the sreen with the power button on top, or when the phone goes to sleep. Nothing can put it back on(opening te keyboard, pulling out the stylis, presing the answer-, windows-, back- and end button). I and up using a music players too keep the phone busy what's makes it operational. Cant really remember when this started happening exactly. My phone is at the moment loaded with a standard ROM. I used too have a custom ROM.
My TP2 does this too, although I only encounter the problem sometimes when someone calls. I answer and put the phone next to my ear, the screen goes black as it should and the phone just dies. I can't hear what the other person is saying and the screen wont turn on anymore. I have to take out the battery to reboot.
set light sensor to manual in settings. You have some bad or fragmented code causing the problem. Pretty common actually, many different reasons, but usually either a bad light or proximity sensor or software issue. Setting the sensor to manual should do it, if not, hard reset and allow the phone to fully set up before touching it, to allow full customization process to complete. Search my posts on SOD (sleep of death) for more information.
Funny this was brought up. Now im worried I just dropped 250.00 and have a new one coming.
Mine started with the ear piece quit working. couldnt hear anything except on speaker.
Anyway I started having the screen issue over a month ago, only way to get it back was soft reset with the stylus. Also when the screen was lit, I couldn't hit the power button to turn the screen off. At times the screen would be on 24/7 and I just dealt with it. The times when it decieded to go to sleep was when I needed the soft reset. Well long story short I forgot my charger one day at work and the battery died. after pressing the power button for hours with no response, moving the screen in all diffrent directions as I pressed the button.It came on once after hrs of messing with it. Well today it died again and I am fed up with it so out came the tools. Once I opened it up I noticed the ribbon that feeds the screen from the mother board was worn and torn. the ribbon slides everytime the keyboard is slid out and it rubs on both sides of the phone. I thought maybe mine was just a fluke and was installed wrong considering the phone being 10 months old but now I read this and see maybe its a common problem. The cheapest I could find the Ribbon was 56.00 so I didnt want to chance it not being the issue.

[Q] Note 8.0 N5110 menu, home, and back buttons non-functional

I have a Note 8.0 N5110 that has a strange problem which I don't really how to troubleshoot. When I am using it, the screen will go off just as if I short pressed the power button. I'll press the power button and swipe the screen to unlock. Everything is just as it was when the screen went off, but now the menu, power, and back buttons are non-functional. There are no lights or haptic feedback when I press them. My device was previously rooted before the 4.4.2 update and I had to use odin to install the upgrade. The issue didn't start for a couple of weeks after the update. Once the screen blanks and the buttons become non-functional, minutes later they will start working again; however, at some point, the screen will blank again and the cycle repeats. I have restored to factory settings with no luck resolving the issue. In fact, the screen will blank while I'm still in the setup phase. I really don't know what to try next to resolve this problem and my device is pretty much unusable at this point. Any thoughts or suggestions as to what I could try to fix this? Thanks in advance for any help - Jeff Gaiche
jgaiche said:
I have a Note 8.0 N5110 that has a strange problem which I don't really how to troubleshoot. When I am using it, the screen will go off just as if I short pressed the power button. I'll press the power button and swipe the screen to unlock. Everything is just as it was when the screen went off, but now the menu, power, and back buttons are non-functional. There are no lights or haptic feedback when I press them. My device was previously rooted before the 4.4.2 update and I had to use odin to install the upgrade. The issue didn't start for a couple of weeks after the update. Once the screen blanks and the buttons become non-functional, minutes later they will start working again; however, at some point, the screen will blank again and the cycle repeats. I have restored to factory settings with no luck resolving the issue. In fact, the screen will blank while I'm still in the setup phase. I really don't know what to try next to resolve this problem and my device is pretty much unusable at this point. Any thoughts or suggestions as to what I could try to fix this? Thanks in advance for any help - Jeff Gaiche
Click to expand...
Click to collapse
Couple questions.....do you have a case or screen protector on it? Sometimes these can interfere with the sensor and cause these type of issues.
I do have a case on the device. It's been cased pretty much since I purchased it. I guess it can't do any harm to remove it from the case, just to see if it's possibly interfering with a sensor somewhere. The issue does seem to have been sporadic at first. I'll give that a try. Thanks for the suggestion -- Jeff
jgaiche said:
I do have a case on the device. It's been cased pretty much since I purchased it. I guess it can't do any harm to remove it from the case, just to see if it's possibly interfering with a sensor somewhere. The issue does seem to have been sporadic at first. I'll give that a try. Thanks for the suggestion -- Jeff
Click to expand...
Click to collapse
Was just a thought. Otherwise it might be a defective sensor that has to be replaced. Not really sure.
I had the same issue. In my case the buttons still worked if I used the spen. I went back and wiped both the cache and Dalvik Cache*and it resolved the issue.
Sent from my GT-N5110 using XDA Free mobile app

Nexus 7 rotation stuck

Hi all, my Nexus has an issue with the rotation of the screen. I've done some googling and downloaded the check my android app. The sensors missing are 1, 3 and 5. I have tried the following:
1. Factory reset the device
2. Attempted the pressure press on the 'n' and 's'
3. Opened the tablet and tried the tape and cardboard fix
4. Reseated the cable that I understand controls the orientation
I've done extensive research on the problem but no luck.
None of these options worked. I have contacted Asus but I'm pretty sure my warranty is up. How can I fix this please?
Hi,
Temporary solution for me: reboot in safe mode and test if orientation sensor works. If it does, reboot again in normal mode and you'll be fine ... But only for some time, as in a day or two rotation failed again.
To boot into safe mode, long press power button until power off message appears on screen, then long press button on screen until boot to safe mode button appears.
Hope it helps!
My n7 does that as well,
Truthfully All I do to fix it is (yes restart but that is annoying), just rotate it to where you want it, and give it a firm, but soft tap along the side of the device.
I found it wakes up the sensors and allows them to operate again
Hope this helps
Hi. It's a fairly common issue with our Nexus7.
My rotation sometimes get stuck also, so i installed an app called "Adaptive Rotation Lock" and problem solved.
So I've tried the safe mode, no good. I also tried the soft tap, no good. Even using adaptive rotation lock does not work. I'm thinking this is a hardware issue. l will have to call ASUS as the email support was complete ****. Thanks for the help all the same.
Assuming you do not have the rotation lock setting enabled I think I have a solution for you.
I had this same issue and I literally tried for 3 months trying to fix it. I finally found some obscure website with a fix. It involved opening up your tablet and basically "securing" one of the cables. After I did that I have not had a rotation problem anymore.
http://blog.daum.net/enue81/2
I seen that in my travels and tried to implement the same fixes, as it is in Chinese or something similar I tried to interpret what he did.
I used black electrical tape to secure the cable ends, then used a similar tape to secure the cable down, unfortunately that didn't work but there's every chance I did it wrong.
Can you please explain what you used?
I've also tried following these two youtube videos:
I didn't use anything. I just basically "pushed" the cables in more even though they did not appear to be loose or anything. It definitely did the trick. YMMV though.

[Q] Display and touch screen major issues following lollipop update.

Problems with my Samsung Galaxy Tab S 8.4 SM-T705:
1st: October 2014
2 weeks after buying, my tablet's battery drained overnight from 45% to zero. Next morning, I turned my tab on after charging to find out that the Tab starts but without any Samsung GAlaxy Tab S logo or Samsung Logo and the Screen has turned green, rendering it difficult to read in auto brightness mode or low brightness mode.
I restarted the device 2-3times and the device started working normally. This was my 1st device restart. I never used to power off the device before.
In 1st 6months, this greenish display problem n logo problem occured 2-3times, and i ignored it, because, it used to get resolved by itself with restart and I had no service centre in and around 50km to my work place.
2nd: January 2014
My device all of a sudden stopped working.. actually hanged.. I managed to turn it off but failed to restart it.
Later I realised that the device has restarted, but the screen was not responding when the screen blinked for a moment with the opening of book cover.. and the back cover of device was warm..
Googling taught me the way to access recovery screen n I opened recovery mode with "power+vol down+home key" and pressing vol down in recovery screen to restart tab.. again the tab started working fine..
3rd: Lollipop update: May 2015
I did Lollipop update. The device was smooth to operate at first. But gradually, i noticed that unlocking the tab failed to light up the display everytime, just the soft keys lighted up. But one day, the device freezed with no response from touch screen. I was unable to switch off the device also.. I had to drain the battery by playing music using S voice to turn the device off. "power+vol down+home key" too was not working.
On googling, I learned to reset device with "power+vol up+vol down" keys pressed together. finally the device restarted, but the device used to hang occassionally.
Googling let me know that i need to factory reset device upon firmware update for normal functioning, which i didn't do after update. so, I backed up my device, uninstalled many apps to make the device run a bit smooth and did a factory reset.. Resetting didn't improve the situation much, but now, the device display failed to light up on a regular basis on unlocking most of the time..
Now the situation is that, the device turns on, finger print scanner works, all apps n everything working, but display remains black, and touch screen is not responding.. using sidesync, everything on Tab can be accessed via laptop.
Tricks tried:
1) Factory reset
2) power+ vol up+vol down
3) power+ vol up+home key
4) power+ vol down + home key
5) Power off using sidesync and then restart
Results: All failure. Everything works but the display never lights up normally..
Plzz help....:crying::crying:
Bump. I'm starting to have similar problems with my SM-T800 running 5.0.2. I open the cover and the device fails to turn on. I press the power button and the screen stays black but the notification bar turns on. I can shake the crap out of the device and the screen stays black but I can see the notification bar flicker. Driving me batty.
If i had any problems like you guys, I would just return it to the place i bought it, for a refund or replacement or even a repair, post it to the service centre if it`s too far to travel too.
You problems sound like battery and or loose connector inside your tablet, it happens frequently on Samsung tablet for the connectors to come loose, if the tablet is dropped or twisted, no outside damage might be seen.
John.

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