[pics][fix] Sleep of Death? - Galaxy Note 10.1 (2014 Edition) Q&A, Help & Troubl

I have the p600, bought at Best Buy a few days after launch. Have it rooted using auto root. It has been running perfectly until today. It started taking a few presses of the power button to turn it on after the screen went to sleep, I thought nothing of it and assumed I was just not pressing the button hard enough.
Then a few hours ago, it just stopped turning on again after the screen went to sleep. If I power it off (long press on power button) it will reboot and the display is on again, and it works fine until it goes back to sleep.
After pressing the power button, the menu and back button light up, and If I hold the tablet in a bright light, I can see the images on the screen. So I know the LCD is working, but for some reason the back light won't turn back on after going to sleep. If it were a bad back light, then obviously it wouldn't work again after rebooting.
I tried a factory wipe - same problem
I did an Odin flash with MK1 stock rom - same problem
I suspect a hardware issue, but Ive been reading about this "sleep of death" that can happen with android devices. Fixes range from installing new kernels to replacing the device.
Anyone experience this or know what is going on?
**UPDATE**
A possible fix for this (and it worked for me) is to take the back cover off, disconnect the battery, and plug it back in again.
I have included pictures of what you are looking for.
When taking the back cover off, I was able to do it with just a credit card. Start at the charge port and carefully get between the casing at the cover, move around the outside, popping the outside clips (look at the photo of this). The inner clips will still be holding after you get all the way around, then simply work out the inner clips 1 at a time. It was a little difficult the first time because I wasn't sure how it was attached, but the second time I took it off, it was pretty straight forward.
When putting the cover back on, follow the same procedure. Start at the charge port, get those clips in, then work your way around the outside, careful not to push to hard on the inner part of the tablet, apply your force at the edges. once the edges are clipped in all the way around, simply press in the inner clips (you will feel them snap in)
I can post more pictures for people who want them. I might even make a short video of the procedure, all in all, its pretty straight forward. It's a relatively easy cover to remove.
Battery Connection
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Battery connector removed (you will see, it is just the white part that comes out, use a small screwdriver or pry tool just behind the wires, and lift up, its cliped on the sides)
These are the internal and external clips, you will see that the "hole" looking ones are the internals, they are in there pretty good, take care when prying them out not to damage the cover or clip mount

Interesting.. I just received my p600 today. I had an occurrence similar to this - I hope there isn't some flaw in them we are uncovering... I'll have to wait a week or two before rooting to see if it occurs again.

dzam72 said:
Interesting.. I just received my p600 today. I had an occurrence similar to this - I hope there isn't some flaw in them we are uncovering... I'll have to wait a week or two before rooting to see if it occurs again.
Click to expand...
Click to collapse
ya, good idea on the root. Im not sure how the warranty bit being tripped is going to play out should I need a replacement given that we don't even have custom kernels or rom's yet.
I am going to downgrade the firmware to MJ4 and cross my fingers. Wish there was a faster way to DL these other than slow ass sammobile lol.

Had the same issue on my 10-day old device during a flight back from the US to the UK which was highly inconvenient.
Anyway, what I noticed was that when opening the magnet cover or turning on from sleep, the tablet actually woke up (touch buttons lit up) but the screen backlight wasn't turning on (if I held it at a certain angle, I could see that the screen was showing the home page but just no backlight).
Another side effect of this was that, even after rebooting and having the screen backlight on, the brightness setting was doing nothing.. I could set it to auto or manual brightness and adjust the slider and it stayed the same brightness regardless. As with others, a factory restore had no effect.
In the end, given that I'm kind of boned for the US warranty living in the UK anyway, I just opened it, disconnected the battery connector, reconnected it and started it up. After that, no problem.. brightness and wake-from-sleep started working again no problem.

mproudfoot said:
Had the same issue on my 10-day old device during a flight back from the US to the UK which was highly inconvenient.
Anyway, what I noticed was that when opening the magnet cover or turning on from sleep, the tablet actually woke up (touch buttons lit up) but the screen backlight wasn't turning on (if I held it at a certain angle, I could see that the screen was showing the home page but just no backlight).
Another side effect of this was that, even after rebooting and having the screen backlight on, the brightness setting was doing nothing.. I could set it to auto or manual brightness and adjust the slider and it stayed the same brightness regardless. As with others, a factory restore had no effect.
In the end, given that I'm kind of boned for the US warranty living in the UK anyway, I just opened it, disconnected the battery connector, reconnected it and started it up. After that, no problem.. brightness and wake-from-sleep started working again no problem.
Click to expand...
Click to collapse
I am using the the bookcover also, wonder if the magnetic cover is somehow screwing it up. Im glad you said you opened it up to DC the battery. That was on my list of things to try! too bad there isn't a way to DC the battery with a USB jig. cross some wires or something.. as a EE, one would think I would know a trick that would accomplish that.. lol.
im downgrading firmware and going to do a full nand-erase with bootloader update, and see what happens
*Just noticed that my brightness slider also has no effect. This must be the indicator that the sleep of death has occurred

*Update*
I removed the back cover, unplugged the battery, plugged it back in and it started working normally again. After playing with it for several minutes to ensure it was working (turning it off and on a few times over and over) I put the rear cover back on. But as soon as I had done that, the problem started again.
I removed the cover again.. unplugged the battery.. but this time, after plugging it back in, the problem remained. After a few more unplug/repluging of the battery and it not working, I decided to unplug the LCD, digitizer, and the backlight ribbon cables. I booted the device without these attached, let it boot fully, then powered it down, removed the battery connector, re-attached the ribbon cables then the battery, booted it again, and the screen was back to normal.
Ill keep playing around with this to see if isolate the problem, but it seems like there is something going on with the connectors, or some sensor/detector/controller getting "software stuck". When the screen is turned off, this sensor/detector/controller is either not getting the right information sent to it, or, it is has gotten stuck in some process it can't resolve (happens a lot in hardware engineering). It can happen when something shorts, and sends the device into a shutdown state (watchdog trips). The rear motherboard has A LOT of flex to it, and I had to push kinda hard on the rear cover to re-attach it. I wonder if when the back of the tablet gets pushed in just the right way, in just the right spot, it causes this screen issue to happen.
Either way, this is pretty unacceptable for a $600 device. The good news is that there is no warrant seal on the rear cover.

After use auto root. did you reinstall stock recovery?.

Serinety said:
*Update*
I removed the back cover, unplugged the battery, plugged it back in and it started working normally again. After playing with it for several minutes to ensure it was working (turning it off and on a few times over and over) I put the rear cover back on. But as soon as I had done that, the problem started again.
I removed the cover again.. unplugged the battery.. but this time, after plugging it back in, the problem remained. After a few more unplug/repluging of the battery and it not working, I decided to unplug the LCD, digitizer, and the backlight ribbon cables. I booted the device without these attached, let it boot fully, then powered it down, removed the battery connector, re-attached the ribbon cables then the battery, booted it again, and the screen was back to normal.
Ill keep playing around with this to see if isolate the problem, but it seems like there is something going on with the connectors, or some sensor/detector/controller getting "software stuck". When the screen is turned off, this sensor/detector/controller is either not getting the right information sent to it, or, it is has gotten stuck in some process it can't resolve (happens a lot in hardware engineering). It can happen when something shorts, and sends the device into a shutdown state (watchdog trips). The rear motherboard has A LOT of flex to it, and I had to push kinda hard on the rear cover to re-attach it. I wonder if when the back of the tablet gets pushed in just the right way, in just the right spot, it causes this screen issue to happen.
Either way, this is pretty unacceptable for a $600 device. The good news is that there is no warrant seal on the rear cover.
Click to expand...
Click to collapse
If you open it again, would you mind taking a few pictures of a disassembly process and the way it looks after removing the back cover?

How difficult is it to remove the back cover? Any plastic damage caused?

malutki said:
If you open it again, would you mind taking a few pictures of a disassembly process and the way it looks after removing the back cover?
Click to expand...
Click to collapse
Already took em That was the first thing I thought of when I was taking it apart. I will try to get them posted soon.
Tablet turned on and off like normal yesterday and today. Not a single forced reboot was required. However, while taking notes today, I noticed a dead zone on the right side of the screen. Touch works fine there(with fingers), but the spen won't work. It just jumps over the area. The affected area is a vertical line from top to bottom.
Since I have not been using the spen lately, I can't be sure if it is a symptom of the sleep of death, or a result of removing the ribbon cables and not seating them properly when I reattached them. I'm going reseat the cables and see what happens.

I just got my Note tonight and have this same issue. I got it at Amazon and it came with both seals broken as others have found. Was surprised it seemed to already be on, when I hit the power button the buttons lit up but no screen. Grabbed a flashlight and could see the backlight wasn't turning on. Tried turning it off and back on, or so I thought, but no dice. I figured I had a bad unit and set up the RMA with Amazon.
I then went and stuck it on the charger and held the power button for a long time, and the charging screen popped up. Turned it on, seemed to be working fine until I hit the power button, and then the backlight wouldn't turn back on again until I rebooted it. I took all of the updates and did another factory reset, same issue.
Now, I also bought a smart cover. After taking the updates but before the reset I tried it, it'd shut off the Note but the backlight still wouldn't turn on when I opened it up. HOWEVER, after the factory reset, I opened and closed it a few times and it worked correctly. I then tried the power button a couple of times and it also worked correctly. For the record, my brightness controls DO work correctly.
At this point I'm not sure what to do. I _really_ want this tablet, and Amazon is out of stuck so I can only return it for a refund. I don't want to do that since I got it on sale and it no longer is.
EDIT: Also, I just tried closing my smart cover and hitting the power button with the cover still closed, and the screen DID turn on. So I'm not sure if that partially throws the theory of the magnet going out of whack out the window or not, since it should turn on even if the cover is closed.

locovaca said:
I just got my Note tonight and have this same issue. I got it at Amazon and it came with both seals broken as others have found. Was surprised it seemed to already be on, when I hit the power button the buttons lit up but no screen. Grabbed a flashlight and could see the backlight wasn't turning on. Tried turning it off and back on, or so I thought, but no dice. I figured I had a bad unit and set up the RMA with Amazon.
I then went and stuck it on the charger and held the power button for a long time, and the charging screen popped up. Turned it on, seemed to be working fine until I hit the power button, and then the backlight wouldn't turn back on again until I rebooted it. I took all of the updates and did another factory reset, same issue.
Now, I also bought a smart cover. After taking the updates but before the reset I tried it, it'd shut off the Note but the backlight still wouldn't turn on when I opened it up. HOWEVER, after the factory reset, I opened and closed it a few times and it worked correctly. I then tried the power button a couple of times and it also worked correctly. For the record, my brightness controls DO work correctly.
At this point I'm not sure what to do. I _really_ want this tablet, and Amazon is out of stuck so I can only return it for a refund. I don't want to do that since I got it on sale and it no longer is.
EDIT: Also, I just tried closing my smart cover and hitting the power button with the cover still closed, and the screen DID turn on. So I'm not sure if that partially throws the theory of the magnet going out of whack out the window or not, since it should turn on even if the cover is closed.
Click to expand...
Click to collapse
I just checked Amazon and they have them in stock. Do you think maybe because so many people are getting replacements over and over they are just recycling them and selling them as "new?" Do you have the link to where people are reporting getting them with both seals broken? Thanks.

notebooko said:
I just checked Amazon and they have them in stock. Do you think maybe because so many people are getting replacements over and over they are just recycling them and selling them as "new?" Do you have the link to where people are reporting getting them with both seals broken? Thanks.
Click to expand...
Click to collapse
Amazon itself doesn't have the 32gb black in stock, only 3rd party vendors.
http://www.amazon.com/Samsung-Galaxy-Note-Edition-Black/dp/B00F3SOHNU
The most recent opened seal thread is here: http://forum.xda-developers.com/showthread.php?t=2533073
Here's an older one: http://forum.xda-developers.com/showthread.php?t=2483916

Hi Serinety:
Thanks for the diassembly picture. I believe you are the first one to show the inside!
If possible, do you mind showing pictures a bit more inside? For instance, I'd like to see where the WiFi and LTE connectors are. (They are both different connectors btw)
Many thanks.
Serinety said:
I have the p600, bought at Best Buy a few days after launch. Have it rooted using auto root. It has been running perfectly until today. It started taking a few presses of the power button to turn it on after the screen went to sleep, I thought nothing of it and assumed I was just not pressing the button hard enough.
Then a few hours ago, it just stopped turning on again after the screen went to sleep. If I power it off (long press on power button) it will reboot and the display is on again, and it works fine until it goes back to sleep.
After pressing the power button, the menu and back button light up, and If I hold the tablet in a bright light, I can see the images on the screen. So I know the LCD is working, but for some reason the back light won't turn back on after going to sleep. If it were a bad back light, then obviously it wouldn't work again after rebooting.
I tried a factory wipe - same problem
I did an Odin flash with MK1 stock rom - same problem
I suspect a hardware issue, but Ive been reading about this "sleep of death" that can happen with android devices. Fixes range from installing new kernels to replacing the device.
Anyone experience this or know what is going on?
**UPDATE**
A possible fix for this (and it worked for me) is to take the back cover off, disconnect the battery, and plug it back in again.
I have included pictures of what you are looking for.
When taking the back cover off, I was able to do it with just a credit card. Start at the charge port and carefully get between the casing at the cover, move around the outside, popping the outside clips (look at the photo of this). The inner clips will still be holding after you get all the way around, then simply work out the inner clips 1 at a time. It was a little difficult the first time because I wasn't sure how it was attached, but the second time I took it off, it was pretty straight forward.
When putting the cover back on, follow the same procedure. Start at the charge port, get those clips in, then work your way around the outside, careful not to push to hard on the inner part of the tablet, apply your force at the edges. once the edges are clipped in all the way around, simply press in the inner clips (you will feel them snap in)
I can post more pictures for people who want them. I might even make a short video of the procedure, all in all, its pretty straight forward. It's a relatively easy cover to remove.
Battery Connection
Battery connector removed (you will see, it is just the white part that comes out, use a small screwdriver or pry tool just behind the wires, and lift up, its cliped on the sides)
These are the internal and external clips, you will see that the "hole" looking ones are the internals, they are in there pretty good, take care when prying them out not to damage the cover or clip mount
Click to expand...
Click to collapse

locovaca said:
I just got my Note tonight and have this same issue. I got it at Amazon and it came with both seals broken as others have found. Was surprised it seemed to already be on, when I hit the power button the buttons lit up but no screen. Grabbed a flashlight and could see the backlight wasn't turning on. Tried turning it off and back on, or so I thought, but no dice. I figured I had a bad unit and set up the RMA with Amazon.
I then went and stuck it on the charger and held the power button for a long time, and the charging screen popped up. Turned it on, seemed to be working fine until I hit the power button, and then the backlight wouldn't turn back on again until I rebooted it. I took all of the updates and did another factory reset, same issue.
Now, I also bought a smart cover. After taking the updates but before the reset I tried it, it'd shut off the Note but the backlight still wouldn't turn on when I opened it up. HOWEVER, after the factory reset, I opened and closed it a few times and it worked correctly. I then tried the power button a couple of times and it also worked correctly. For the record, my brightness controls DO work correctly.
At this point I'm not sure what to do. I _really_ want this tablet, and Amazon is out of stuck so I can only return it for a refund. I don't want to do that since I got it on sale and it no longer is.
EDIT: Also, I just tried closing my smart cover and hitting the power button with the cover still closed, and the screen DID turn on. So I'm not sure if that partially throws the theory of the magnet going out of whack out the window or not, since it should turn on even if the cover is closed.
Click to expand...
Click to collapse
I got mine from BH Photo. It works perfectly and all seals were intact when I opened it.

Thanks, can you help me?
i just drop my p600, all the digitizer is broken now, but its still working, i dont want to tear down it, because it can stop working, so, can you please tell me if the digitizer is atached (glue and heat) to the screen, or is it just a plastic holder as its predecessor note 10.1?...
thanks buddyes, sorry about my english it is not my main lenguage u_u, im trying my best.

Just repaired my daughter 's note 10.1 2014 further hard fall thanks to your battery advice!
Thank you, it works fine
Envoyé depuis mon GT-I9505 avec Tapatalk

Just someone post the images of rear back of Note 10.1 (2014) for both P601 and P600 to see the diff when Disassemble the P601 and P600 for replacement purpose?
(mine is P601 and i think i need replace SIM card holder-it's broken since few times take it in-out).

This thread freaks me out. I hope this doesn't start happening to me/everyone.
Sent from my Nexus 5 using Tapatalk

Taking into account the shock of impact, it is normal to my opinion to have strange behaviour of the device...
Would be better to have full time access to battery in order to make hard reset ... or to have dedicated button for this purpose.
Envoyé de mon SM-P600 en utilisant Tapatalk

Related

[Q] power button not working/always on

hi guys i have a real bad problem...woke up this morning and my desire wouldnt wake up when pressing the power button...screen turned on after i put the charger in but when the auto screen off turns the screen off i cant wake again until i attach the charger.also with a battery pull the phone turns off but then when i put the battery back in the phone automatically boots without touching the power button
thanks
bailz2506 said:
hi guys i have a real bad problem...woke up this morning and my desire wouldnt wake up when pressing the power button...screen turned on after i put the charger in but when the auto screen off turns the screen off i cant wake again until i attach the charger.also with a battery pull the phone turns off but then when i put the battery back in the phone automatically boots without touching the power button
thanks
Click to expand...
Click to collapse
My money is on a hardware failure. Do you have a stock ROM ?
hey yea i went and unrooted and reinstalled my carriers stock ruu....still same problem.looks like taking it back to the shop for them to fix
Hey actually exactly one week ago my Desire started the same exact thing, and I could not find help anywhere. Best info I can find is that it might be moisture, but at least for me I don't think that is the case.
I ended up taking the whole phone apart (been taking stuff apart all my life, but i was still nervous) to clean it out since I've had dust in the screen for a while... I think I cleaned it out pretty well, but did not take the plastic tape off the button. This did not immediately help, but after playing with it for a while it now works most of the time, but is quite sensitive usually.. the button "presses" before it mechanically "clicks".
Anyway, If you were to become desperate enough to try this, I would recommend pulling that black plastic tape off the button when cleaning, then stick it back on. Good luck
I've been lusting after the Sensation anyway
yea im not into pulling stuff apart that i got no idea about...took it back still under warranty n its getting sent in for repair...now stuck with a piece of **** samsung omina icon....windows phone sucks the big one very hard...ill be going back and asking for at least an android as a loaner while its in for repair
ohh well that's good that it's still under warranty. I was actually using the camera at a beach during hurricane Irene and that night the power button went berserk.. continuously turning the screen on and off... before eventually just staying "pressed" all the time again. So maybe the moisture theory isn't all that far fetched in my case (I was at a beach the first time it happened, but never went near the water)
Currently trying to get a broken Desire on ebay to harvest for parts :/
Moisture - Htc Desire Power Button.
Hello,
I've met with that problem.
I've unscrewed the device, I've remove the black tape, and I've used a cotton swab to clear it.
But the problem was solved, but later withing the 24hrs, It's back to auto on/off without pressing the button.
I would like to know, Should I remove the yellow transparent tape on the button for cleaning?
Thanks.

Replaced my screen, now the screen won't turn on

Hey guys, I cracked the screen on my HOX so I replaced the screen with a unit from directfix.com
After double checking all of the flex cables I tried to power the phone on and I am getting nothing from the screen and the vibration motor is constantly buzzing.
The only signs of life is the red LED, the three capacative buttons will light up, and the aforementioned constant vibrating. If i hold the power button to attempt to turn it off the buttons blink several times then it seems to stay on after that.
Has anyone heard of a problem like this before? Its killing me not having my HOX! I had to put my sim card in my old iphone 3gs and I have to say that this sucks really bad.
Are you sure you've connected everything correctly? It sounds like there's something being shorted! I'd recommend you to dissassembly again, an assembly again BUT THIS TIME VERY CAREFUL. Best is if you use a video tutorial if you think you're not experienced enough.
nitrous² said:
Are you sure you've connected everything correctly? It sounds like there's something being shorted! I'd recommend you to dissassembly again, an assembly again BUT THIS TIME VERY CAREFUL. Best is if you use a video tutorial if you think you're not experienced enough.
Click to expand...
Click to collapse
Thank you for the advice. I disassembled the phone and carefully put it back together. I took care to make sure the flex cables for the LCD, vibrator/button strip, antenna, volume buttons and digitizer were all carefully connected.
Now the vibrate function seems to work fine as it just gives me a short pulse when I turn the phone on as it usually does. The screen however, still refuses to turn on. I made extra sure that its flex cable was put in the right way and that it was secured with the jaw bone connector.
This video here www youtube com/watch?v=OIeO0DueMcg&feature=youtu.be at about 6:00 shows that you can test the LCD midway through the assembly process.
I tried exactly that and the LCD would still not turn on. I am just hesitant to return it because I know that the chances of the screen being a complete dud are very slim.
Now when the phone is turned on the three capacitive buttons remain on which I know didn't used to happen.
Swilli89 said:
Thank you for the advice. I disassembled the phone and carefully put it back together. I took care to make sure the flex cables for the LCD, vibrator/button strip, antenna, volume buttons and digitizer were all carefully connected.
Now the vibrate function seems to work fine as it just gives me a short pulse when I turn the phone on as it usually does. The screen however, still refuses to turn on. I made extra sure that its flex cable was put in the right way and that it was secured with the jaw bone connector.
This video here www youtube com/watch?v=OIeO0DueMcg&feature=youtu.be at about 6:00 shows that you can test the LCD midway through the assembly process.
I tried exactly that and the LCD would still not turn on. I am just hesitant to return it because I know that the chances of the screen being a complete dud are very slim.
Now when the phone is turned on the three capactive buttons remain on which I know didn't used to happen.
Click to expand...
Click to collapse
Update: So I was thinking the phone was booting up all the way, but I just saw that my computer won't recognize the phone beyond making a connection sound; I just can't see it in windows. As i said the capacitive lights stay on, but if I fold the power button they blink 15 times exactly and the phone seems to power off. Should I assume the SoC is dead or gamble with a replacement LCD?
Swilli89 said:
Update: So I was thinking the phone was booting up all the way, but I just saw that my computer won't recognize the phone beyond making a connection sound; I just can't see it in windows. As i said the capacitive lights stay on, but if I fold the power button they blink 15 times exactly and the phone seems to power off. Should I assume the SoC is dead or gamble with a replacement LCD?
Click to expand...
Click to collapse
Hi, I'm in the exact same situation you have described above! Did you ever manage to work it out, what was the solution? Any info or help at all would be great, thanks!!
I did replace my lcd+digitizer as well as yous. And I had same problem. But it does work now.
1.open up your phone . Take all parts off, separated.
2. Take battery off.
3.Now connect power button.
4. Connect battery.
5.Switch it on (hold pwbt for 2sec), mobo+battery+power button itself.
6.Now wait 20 sec.
7.Now connect LCD ribbon(bottom one),make sure it's right in, push it in far as you can.
8.Now put it righ on bezel and connect digitizer ribbon.
9.Press pwbt and see does it work. If does put rest of stuff together and be happy.
I can make phototutorial on request.
I did it few times. The battery was touching the LCD ribbon and it comes of very little but screen comes off and I have to start all over again.
So make sure that ribbon it's not getting any pressure from battery.
Let me know does that help.
Sent from my repaired HTC One X

[Q] Power/Lock button unresponsive

Hi everyone, so my Power/Lock button on my Gnex came unresponsive as of last night.
When i woke up this morning it worked! but only once , then randomly it just started working again, and then 10 minutes later nothing.
When i pull the battery, and put it back in it will power on immediately.
At the moment, if i press it, it will work once, then wont work again for another minute or so.
I'm running a custom rom, i did a reset, cleared all my data and it still persists. Running CNA, was thinking of trying to flash back to Stock but the custom rom allows the option to wake the device with the volume buttons, which is the only reason i can even wake it at the moment.
Its still under warranty, however i would go a atleast 2-4 weeks without seeing the phone and have to send it away.
I was thinking of opening it up myself (following the dissasembly videos on youtube, only need to remove 6 screws and use the little plastic pryer to seperate from the screen i think.)
Heres pretty much my question:
With the Galaxy Nexus, is there some sort of sticker that will be broken once i open up the phone that will void the warranty? If i can't fix it, will they know that its been opened?
If not, i'm going to open it up, see if the connector has come loose or something which is what i hope, otherwise for $5 i can get a replacement button & ribbon off ebay, which i would prefer to do then go through the hassle of sending away for warranty.
EDIT: Also think the reason the connector has become faulty is due to water, it was raining last night and was using my phone as a flashlight to walk up the backyard of my house. It got exposed to the rain, Everything was fine, but when i plugged my phone into the charger was when the button stopped responding. I'm guessing some water must have got into where the power button is.
"Do or do not, there is no try." I was gonna suggest the ifixit or adam outler's vids as to if there will be signs its been opened, but it seems you've already watched those videos.. supposedly the led will be lit red if there is a more serious internal water damage issue, which would completely void your warranty, i believe, so it seems like you may have to tear it down.

[SOLVED] Black Screen Issue

Hi. I am not sure this is the BSOD problem that others have had.
I bought a second hand i747. It came with 4.3. It will work fine for a few minutes when first turned on, then the screen will go dark. The menu and back buttons stay lit, and the touchscreen still works, the LCD just cuts off.
If I hit the power button, it sleeps the phone. When I hit again, the screen will come on, but only for about 5 seconds, then it's black again. Everything works, just black screen.
Is it possible for it to overheat or something? It doesn't feel hot at all, but if I turn it off and leave it for awhile, it will again work for about 2-3 minutes, then only about 5 seconds at a time again.
I swapped batteries, and it's the same. The battery had pink on it. I opened it up, and none of the other stickers showed water exposure, and the board itself was clean.
It has stock 4.3, and is not rooted.
I did go to phone settings and turned off the "darken screen during calls" checkbox.
I am wondering if the proximity sensor heats up and shuts the screen off. Grasping at straws I suppose.
Any idea of how to fix this?
Thanks
Perhaps a bad capacitor in the digitizer/lcd assembly? My TV had an issue with a bad capacitor that would cause the screen to blank out after a few minutes???
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
I'll try swapping boards in it later, and maybe at least narrow down if it's the board or the screen assembly. I have an extra proximity sensor I could swap, but it doesn't seem like it's that to me.
thanks, will post more after the board swap
Update: I switched boards (different carriers), and I could not replicate the problem in either phone. I had hoped that would show that either the board or the LCD assembly was bad, but I didn't learn anything useful either way.
I put the boards back in their respective bodies. It still happens now, but not as often. It also appears to be totally random. I did switch batteries in the problem phone, and it doesn't seem as bad. I will try another battery switch and see if that helps it more.
When the screen goes dark, the menu and back buttons are lit. When it went out last night, I could see that there was still some faint background light that I can't see in the day. I pulled up Youtube and did a video, and when the screen went dark, I could still see movement, but couldn't make anything out. So, the phone is still going in the background.
If I push the power button, it sleeps, then push it again, and it wakes up just fine. Sometimes I have to do that 4 or 5 times for the screen to stay on. Sometimes it goes dark after 10 minutes of use, sometimes a half hour, sometimes just a few.
Any help is appreciated.
Well, right before throwing the phone into the wall, I noticed a partially removed liquid exposure indicator. I pulled the phone apart to check the motherboard.
In the process of taking it apart, I forgot to take out the SD card. In so doing, it pulled the sim/sd card module off the motherboard. Low and behold, there was a very light corrosive glaze in a few spots under the module.
So, I got out the 99% IPA, and a toothbrush, and cleaned the whole entire board. Since then, it seems to be working fine.
I don't know exactly what part getting cleaned fixed it, because I just cleaned the whole board.
Anyways, maybe that'll help someone with inexplicable issues downstream.
Thanks for following up with how you fixed the problem. In retrospect, water damage makes sense.
I dropped a Captivate into an ice chest full of melted water last year. I immediately pulled it out and the phone was mostly okay for a while but then the microphone didn't seem to work so well and occasionally the right third of the screen wouldn't respond to touch until I cycled the screen on and off. The water damage sticker and phone interior showed no signs of water.
I will probably sell the old captivate but with full diclosure about the history. Would have been nice if the seller had done the same for you.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Thanks, I should have thought of it sooner, but it didn't seem to have any signs of water damage otherwise.
I ordered the 99% IPA online, because I couldn't find any locally. It works wonders with previously wet boards. You might be able to bring it back.

Screen troubles after a tumble

The screen didn't break but after it fell it did look like the bottom left hand corner was visible darker than the rest of the screen. Today, almost a week after the initial tumble I decide to see if restarting it would fix the problem and it did but it lead to bigger problems. Now if the screen turns off for any reason it stays off until I do a hard reset by holding the power button for 10 seconds. When I try and turn it back on the captive buttons light up but nothing else happens. When the screen is on after a hard reset I'm unable to adjust the brightness level when I pull down the top.
How likely is it that the LCD ribbon came loose? It seemed like there were issues with it before.
I'm at a complete loss for what could be wrong with it. Any advice for recommendations would be greatly appreciated.
I'm really hoping I don't need any major repairs or even a new tablet because I can't afford much of anything.
My grandson recently had a tantrum and threw down my tablet. Afterwards the screen was flickering so I decided to restart it to see if that would fix it. The screen never came back on although I could hear it start up sounds and the capacitive buttons would light up. To make the story short, i contacted Samsung and they said it would be a standard $200 repair fee unless they found a loose cable. Today my credit card was charged $59 dollars by Samsung. I guess it was just the loose cable. Note that they sent me a prepaid UPS label to send it back to them and they are shipping it back to me all within that $59 charge. Well worth it for a great tablet.
Sent from my SM-T800 using Tapatalk
You got to remove the back and disconnect the lcd and battery cables and reconnect them after 10 seconds and all should be good. This happened to me after I got the screen of death. I dropped it and the screen did it again. So I just disconnected them both, reconnected, and everything works fine.
bh87771 said:
You got to remove the back and disconnect the lcd and battery cables and reconnect them after 10 seconds and all should be good. This happened to me after I got the screen of death. I dropped it and the screen did it again. So I just disconnected them both, reconnected, and everything works fine.
Click to expand...
Click to collapse
Can you recommend any guides & kits that I can purchase from amazon to help me take the tablet a part?
YouTube it. It is real easy removing the back, patience is needed.
Yes go to youtube for the disassembly videos. I bought a generic repair kit from ifixit for the tools. Though guitar picks can also work well.
Basically when you drop it a cable gets loose. You just have to disconnect and reconnect it.
Mine was very clearly only half connected (not in the picture which is from when I replaced the battery). I also disconnected and reconnected the battery and lcd connectors to make sure. But the loose cable was on the top left and didn't seem to be one of those. Just reseat them all to be sure.
There is another thread on here about disassembly which has pictures that I used as reference.
I've had mine apart twice. Once when I dropped it and once when I replaced the battery for poor battery performance (this really was sooo worth it).
I just received a used Note today and was about to initiate a return because the screen was completely dark but the rest of the tablet seemed to be working, including touch. Removed the back, reseated the ribbon cable, and everything's good now.
Strange start to my experience with this tablet.

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