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Random turn-offs/reboots FRUSTRATION!

This tablet is a great piece of tech, however I've had two major problems with it. AMOLED screen burn-in and random reboots/shut-downs.
In the past week it's at least turned itself off or rebooted itself 9 times. Is anyone receiving this problem? Also in the past 3 hours or so, it's been rebooting to the Samsung Galaxy Tab 7.7 screen just before the tab turns on and gets stuck there. I managed to get out of that situation but I'm not sure how.
If you have problems list which version of the tablet you have, your firmware or kernel version and your specific problem.
Hopefully we can get Samsung's attention if theres enough people and have this patched with an update. Or maybe it'll all go away with ICS... just being optimistic lol.
If anyone knows any sort of customer service or someone from Samsung I can email about this problem that'd be appreciated.
Details:
GT-P6810
32GB WIFI Only
2.6.36 P6810DTKL5 Rooted.

I don't have the problem but if I can maybe suggest, have you reset the device back into factory setting?

Your not the first one to ask this nor your alone, this also happens with the Galaxy Note with some users, I've never been able to pinpoint the cause for this on the note.. I'll see if it happens on my Tab7.7 when I get it tomorrow.

Do you by any chance have a sim card inserted? I noticed yesterday as I was working with AT&T to get my device set up that each time I had to take my sim card out (to give them the serial number) the Tab would reboot on its own.

I have had 2 reboots since getting my tab, very weird.
Sent from my GT-P6800 using xda premium

We need more people to chime in and see how wide spread this issue is, it could be cause by a very aggressive deep sleep state that is used by samsung?

torakun said:
I don't have the problem but if I can maybe suggest, have you reset the device back into factory setting?
Click to expand...
Click to collapse
I thought that factory resetting it would help but as far as I can tell it hasn't. I tried that about a week ago but am willing to give it another shot if someone proves me wrong. Thanks for the input though.
lulugirl896 said:
Do you by any chance have a sim card inserted? I noticed yesterday as I was working with AT&T to get my device set up that each time I had to take my sim card out (to give them the serial number) the Tab would reboot on its own.
Click to expand...
Click to collapse
I have the wifi version so I don't have a sim slot. Sorry for not being more specific in the opening. Although I remember someone else mentioning that their sim may have been the problem. Thanks anyway.
EarlZ said:
Your not the first one to ask this nor your alone, this also happens with the Galaxy Note with some users, I've never been able to pinpoint the cause for this on the note.. I'll see if it happens on my Tab7.7 when I get it tomorrow.
Click to expand...
Click to collapse
Maybe something with the processor, they're relatively similar aren't they? Anyway hopefully I didn't discourage you from your tab, it's still one of the best pieces of tech. Lets hope this problem isn't that widespread and if it is lets hope for a patch or something, maybe with the ICS update hehe.

Have had my GT-P6800 for about a month and I have had several random reboots -- since the reboot is complete and I end up where I was I cannot determine what's behind it.

Haven't had reboots, but I've ran into issues with it turning itself off at least once a week. Currently on LA2 firmware.

I had about 4-5 reboots in a week . don't remember details .

Is everyone using 3G card that are having reboots? I did NOT have any reboots until getting a 3G card this weekend. It JUST did it. Also, I notice if it's on charger (not USB) that when it's full it will more likely reboot. That's my $.02.

My 7.7 p6800 has not exhibited any reboot. I am on KL1..but it has prompted me to update...
Please post
7.7 model wifi or 3g
Baseband Version
reboot yes or no
Sent from my SAMSUNG-SGH-I717

I just got my Tab7.7 but I do not have a spare simcard yet to test if its causing the issue but I will update this post for any findings
P6800
16GB 3G+WIFI
DXLA2 - Kernel Build Date Jan 2012
1 Sleep of death so far, watched a movie but locked the device to take a phone call from another phone. Had it in flight mode but wifi enabled.. so thats about 24hrs from initial power up.. I also performed a factory reset before using the Tab.

copualt3 said:
My 7.7 p6800 has not exhibited any reboot. I am on KL1..but it has prompted me to update...
Please post
7.7 model wifi or 3g
Baseband Version
reboot yes or no
Sent from my SAMSUNG-SGH-I717
Click to expand...
Click to collapse
yep, my tab prompted me to update as well, I it yes, it downloaded something over wifi, then it rebooted, then it goes to recovery and installed the new stuffs, then said "failed" lol
I only have one crash that is when I used the cam then hurriedly hit back several times, then it froze and rebooted, that's the only time it did it

I've structured the OP a bit better hopefully. I've provided my details and asked people for theirs.
Going to go look for who to complain to now lol.

No reboots yet but I did see it wake up to the lock screen while it was sitting on my desk, I have it in flight mode if it matters. It was actually spooky..

Ok I just had the sleep of death on my Tab7.7
Airplane mode but wifi is enabled, the last thing that I was doing was watching a movie and locked the tablet to take a phone call on my other phone. No SIMcard inserted only a 32GB microSD card.

Hi all.
Got my tab 7.7 3G about 3 weeks ago. Rooted on day 2 (this is my 4th droid so pretty confident doing so.... but...) using the simple root method posted somewhere here in XDA.
Not sure if this is related to the rooting, but I've had about 6-8 reboots, several shutdowns and one really strange rebooting which led to the tab unresponsive to anything (only showed the samsung name logo). I was about to factory reset again (I did about a week ago but only because I forgot to reboot after I rooted) when the tab suddenly woke up and started booting normally.
Normally until apps started loading and for almost all the apps, errors of some kind started popping up.
Since I had control again, I factory-resetted the tab.
Since then, I've had no reboots or shutdowns. I do not know why.
Other strange quirks - sometimes, when waking the device with a quick push of the power switch, the screen does this strange graphic swirly thing (almost seems like a graphic image gone mad while loading) and then loads the proper graphic/lock screen.
Sometimes too, when changing orientation, the graphic seems to lag behind the action. Not all the time though. I use Go Launcher as my default but I've noticed the TW screen do the same thing when I change orientation.
As far as Go launcher is concerned (I use it as well on my GS2), only the dock seems to have a problem - when flicking from one dock to another, the next dock does not 'center'.
So far I am a bit disappointed and hoping (hugely) that ICS releases this tab to its dual core, SAmoled glory.
Edit - if I were to say which was the biggest disappointment, that would be the media rescan. When I have a new photo or image, the image does not appear right away in Gallery. When I try to use the music player, the player will not load (rescanning) but the image appears in gallery after.

wujae said:
Hi all.
Got my tab 7.7 3G about 3 weeks ago. Rooted on day 2 (this is my 4th droid so pretty confident doing so.... but...) using the simple root method posted somewhere here in XDA.
Not sure if this is related to the rooting, but I've had about 6-8 reboots, several shutdowns and one really strange rebooting which led to the tab unresponsive to anything (only showed the samsung name logo). I was about to factory reset again (I did about a week ago but only because I forgot to reboot after I rooted) when the tab suddenly woke up and started booting normally.
Normally until apps started loading and for almost all the apps, errors of some kind started popping up.
Since I had control again, I factory-resetted the tab.
Since then, I've had no reboots or shutdowns. I do not know why.
Other strange quirks - sometimes, when waking the device with a quick push of the power switch, the screen does this strange graphic swirly thing (almost seems like a graphic image gone mad while loading) and then loads the proper graphic/lock screen.
Sometimes too, when changing orientation, the graphic seems to lag behind the action. Not all the time though. I use Go Launcher as my default but I've noticed the TW screen do the same thing when I change orientation.
As far as Go launcher is concerned (I use it as well on my GS2), only the dock seems to have a problem - when flicking from one dock to another, the next dock does not 'center'.
So far I am a bit disappointed and hoping (hugely) that ICS releases this tab to its dual core, SAmoled glory.
Edit - if I were to say which was the biggest disappointment, that would be the media rescan. When I have a new photo or image, the image does not appear right away in Gallery. When I try to use the music player, the player will not load (rescanning) but the image appears in gallery after.
Click to expand...
Click to collapse
Hm, mines rooted too. I wonder if that affects how often you get a reboot/shut-down? Still, it better get fixed with an update.
Btw, don't use this tablet as an alarm. I woke up half an hour late to find that the tab was off. I turned it on and the battery was at 60% so it definitely wasn't the battery running out. Maaan was I late for school lol.

tab 7.7
I have the same problem especially when watching the movie or downing torrents after the screen shutdown especially when the battery over 50%. when I want to switch on the screen, the tab will not response until long press on power button switch on with galaxy tab 7.7 screen. that means it was shut off !

[Q] Screen goes partially blank

Hey, so I have this weird problem with my G Flex 2.
I got it around 40 days ago from U.S. Cellular.
I have run into this problem about three times now, and from what I can remember it always happens when I have music playing. I tap the screen on to the lock screen then let it go to sleep or turn it off myself. When I wake it back up the screen is all black except for a few millimeters on the top, where I can see some display.(*note, this doesn't happen every time)
I am able to scroll through the display but no pop up menus. Since the battery is sealed off in the back of the phone I can't use that fix, holding the power button only brings up the menu option to turn off the screen which doesn't do me much good since I can't use the screen.
If I wait for 5 minutes or so the phone will right itself, but I don't want this to be a persisting problem. I'm not sure if this problem is tied to the music playing, it hasn't happened when it isn't playing, but I play music on my phone quite often. (note* I am playing the music from my phone, not streaming)
If you need more info I'll do my best to provide it. This is all I can think of right now.
Honestly, I don't expect anyone to have a fix yet since the phone is fairly recent and not as popular. I tried looking under G3 forums since the UI is pretty much identical, but I didn't find anything.
Sorry, my post is a little wordy.
I'd appreciate any help anyone can provide. Thanks

Yes, this has happened to me twice recently too. Once the screen was completely black except for a bright white line at the very bottom, but the phone was still responsive behind the dead screen. The other time there was a distorted/ghosty notification bar showing at the top but nothing else (like what you reported). Then the problem would resolve completely and spontaneously after resuming from sleep a few times. I have the Korean model (F510S) which was a gift so I'm stuck with it - no returns or warranty available.
bonebeatz1234 also posted about a similar problem. Seems like a hardware fault?

The replacement phone screen was fine i had a different issue of over heating and had to return it . I opted to get another device the note 4. Didn't wanna go that route bit had no choice i loved the design and ui of the flex 2. I wished lg would of just ditched the 810

~~~
Hi, I encountered same problem here.
Is anyone able to send me a screen shot or a video of this problem.
As I need to use this to prove the situation and claim warranty from the seller, however I didn't take a photo or something when the problem happened to me.
please sent to [email protected] if you have the photo or video and many thanks~

Just had this problem also had a g flex 2 for about 21 days now and it happened to me after a restart in the car with a pinkish line at the top and the phone was completely responsive even though the screen was blank
I think it might have to do with heat cause I held it by the ac vent while I was reading this board on my nexus and when I looked back at the phone it was working perfectly
But I swear during my time with the phone it heated up way more than this time and this time the phone wasn't even hot
I reset the phone like 3 times before I held it to the vent and it didn't help at all
Using the att variant with android 5.1.1

Have the same problem every now and then, found a recommendation on another website and in the instruction manual to reset the phone by holding down the power button and volume down button for about 10 seconds or to turn it off by holding down the same buttons for 20 seconds. I find what works better though is to just leave the phone alone and it corrects itself within about 5 minutes.

Having this same problem. Happens once every couple of weeks. Any updates on this?

I think that this is a heat problem....everytime i left my phone in the sun, it show me this strange error.

I'm not convinced its a heat issue. I looked at my battery chart the last time it happened and it was barely over 90 deg. It seems it happens to me when it is charging PLUS doing something like streaming music or GPS is on. I need to start taking notes. I should have done that before.

this have happened to twice too. weird anomaly.

assyriska said:
I think that this is a heat problem....everytime i left my phone in the sun, it show me this strange error.
Click to expand...
Click to collapse
even you can show some errors if u stay on sun.
Inviato dal mio LG-H955 utilizzando Tapatalk

Having the same random issue. Today it happened and reboot would not fix (it usually does) finally after about 30 minutes the screen came back to normal. I now disabled lock screen in case I need to get data off the phone from pc ? in the case that the issue becomes permanent.
Sent from my LGLS996 using Tapatalk

although it's an old post, but worth to mention, that It can happen to all the LG Flex 2 models.
It is caused by a heat or inaccurate voltage. let me explain how it can happen:
heat - when you put the phone on the car's cradle under the car's front windows during a sunny day - it will happen.
voltage/heat - when you charge your phone and not using your original charger (eg chinese car chargers) - it will happen.
so what to do? I've noticed that putting the device over the cat's air conditioning , can reduce this to few minutes. also, if you can, mount your cradle over one of the air condition outlets and it will freeze your phone all the time

Hardware Gurus: is this a hardware problem?

Hi guys
I'm sure this problem is not brand specific but a general issue:
My device (Xiaomi Redmi Note 1W 3G) loses its display from time to time. The screen (1) flickers for a few secs or
(2) during standby it loses power, only way is reinsert battery. Sometimes there is a freeze (3)which means for half a minute the system hangs until it reboots all alone.
My question to you: is it possible some internal wires have become loose, or and other idea?
btw, my device never ran correctly, from the first day on, issues.
So far, I've tried a custom ROM and several global versions as well as TWRP and CWM.
Any help highly appreciated! [emoji316] [emoji26]
tapatalked

TalkingHeadAche said:
Hi guys
I'm sure this problem is not brand specific but a general issue:
My device (Xiaomi Redmi Note 1W 3G) loses its display from time to time. The screen (1) flickers for a few secs or
(2) during standby it loses power, only way is reinsert battery. Sometimes there is a freeze (3)which means for half a minute the system hangs until it reboots all alone.
My question to you: is it possible some internal wires have become loose, or and other idea?
btw, my device never ran correctly, from the first day on, issues.
So far, I've tried a custom ROM and several global versions as well as TWRP and CWM.
Any help highly appreciated! [emoji316] [emoji26]
tapatalked
Click to expand...
Click to collapse
Screen flickering issues seem to be common in the Redmi Note series :/... I read that someone who had this problem found that factory reset fixed it, but once he entered recovery the issue came back. I would assume it's a hardware problem with my experience with laptops and desktops (yes they aren't phones though). I don't think that there's a wire that's loose; I think it's something on the motherboard causing the problem, not the screen panel itself. Can you send it back to the person you bought it from and get a replacement?

Thanks for your reply. I've never read about these issues anywhere before, but now I see that this might be Xiaomi's fault. Nonetheless I'm gonna open it up just to check it out as I imported my Note from China. Sending it back would be way too adventurous.
I'll turn my back to Xiaomi, other brands are smaller yet more reliable.
tapatalked

Galaxy S6 Overheating after OTA update

Hi There,
This is the first time i've been so stuck i need to ask for help, so here it goes:-
my wife has a Galaxy S6 (sim free G920F) for around 25 days, Last night it prompted for an OTA update, which we allowed however today, all it is doing is complaining about Overheating and it needs to turn off, when putting it back on charge it says battery temp is too hot after it is left for a bit unplugged you can plug it back in and it will charge, but the error returns. saying it is too hot.
all since the OTA update
it currently on stock 6.0.1
I've tried to clear the cache and do a factory reset. but neither have resolved the problem.
anyone else had this since the update?
Many Thanks
Paul

Most likely culprit is the fast charging feature. Try disabling it and see if that resolves your problem.
Settings » Battery, disable fast charge
If that fixes your problem I'd say try a different cable and charger with quickcharge support.
You can also try turning phone off then trying to charge.
If it still gets crazy hot I'd say your battery is quickly going bad and you should get it replaced.
If it works fine without quickcharge at least you narrowed down the issue.

blandead said:
Most likely culprit is the fast charging feature. Try disabling it and see if that resolves your problem.
Settings » Battery, disable fast charge
If that fixes your problem I'd say try a different cable and charger with quickcharge support.
You can also try turning phone off then trying to charge.
If it still gets crazy hot I'd say your battery is quickly going bad and you should get it replaced.
If it works fine without quickcharge at least you narrowed down the issue.
Click to expand...
Click to collapse
its not on fast charge when it occurred, still having same problem TBH I think its a borked update, anyone else having the same after the OTA update on stock 6.0.1?

zanthraxuk said:
its not on fast charge when it occurred, still having same problem TBH I think its a borked update, anyone else having the same after the OTA update on stock 6.0.1?
Click to expand...
Click to collapse
Just power off device, then press power+vol up and home button. When you see samsung logo relase just power button. When you enter in recovery just navigate to wipe cache partition and confirm with power key then reboot device. This is good for device after ota update, battery drain problems etc
Sent from my SM-G920F using Tapatalk

What happens when you power the phone off completely and plug in charger?
See if it'll fully charge, this will rule out software / os issue.
Better to find this out first before your left with a dead phone for a couple weeks I've been there.
Sent from my stang5litre Edition 5.0 using XDA Free mobile app

Hi
It happened to my galaxy s7 and my friend's galaxy s6. Both in exact same time (after update)
After update devices start to overheat without a reason during normal usage (Web browsing etc).
And I mean really hot - this kind of temperature that makes me worry about hardware.
The weird thing is that even that I flashed previous ROM (downloaded from sammobile and flashed with odin) the problem still occur. I thought that wiping all data and cache and flashing a ROM should totally remove any change that has been done to device by update, but it seems like I "can't go back" to the state from before the issue.
I searched the whole Internet looking for that issue hoping that some people already started to complain about it and by this - confirming that this is a larger problem related to update. Right now this is the only topic that I found.
Could be that people are still not aware that their recent problems with overheating is not because of some crazy app lagging (that's what my friend first thought was).
In addition when you try to Google the issue you got 102910 tutorials about how to resolve overheating by disabling fast charge or not using phone in the sun... lol.

Strange. One possibility is that the temperature sensor(s) inside the phone are defective and reports inaccurate temperature readings. I had this problem with my ex-HTC One X+, it would report high temperatures when in reality it's nearly ice cold (during the winters), I had the service centre replace the sensors for me.
My S6's battery temperature never exceeds 40°c, while the CPU occasionally reaches 70°c, at that point, my S6 would perform an automatic soft reboot. But that's it though.

DaryllSwer said:
Strange. One possibility is that the temperature sensor(s) inside the phone are defective and reports inaccurate temperature readings. I had this problem with my ex-HTC One X+, it would report high temperatures when in reality it's nearly ice cold (during the winters), I had the service centre replace the sensors for me.
My S6's battery temperature never exceeds 40°c, while the CPU occasionally reaches 70°c, at that point, my S6 would perform an automatic soft reboot. But that's it though.
Click to expand...
Click to collapse
The temeryture is so high that I do not even need to measure it by app. The device burning my hand (literally) is enough indicator for me.

Yanush7 said:
The temeryture is so high that I do not even need to measure it by app. The device burning my hand (literally) is enough indicator for me.
Click to expand...
Click to collapse
Have it checked out at the service centre.

Solved
I had to allow it to turn off and let it cool down. left it 4 hours, turned it back on, (in all honesty, trying to replicate the problem for RMA) and all fine, over heating message disappeared and no problems since really weird.
anyway thanks for all the help guys
Cheers

See attached image, that's normal on my S6 and my ex-S6 Edge.
Sent from my Samsung Galaxy S6 using XDA Labs

DaryllSwer said:
See attached image, that's normal on my S6 and my ex-S6 Edge.
Sent from my Samsung Galaxy S6 using XDA Labs
Click to expand...
Click to collapse
I think better app for cpu temp is CPUZ. It gives you more info.
Right now I'm on custom rom (superman rom) and with custom superkernel 1.4 and it seems like the phone overheats less - but I do not really know what are the good standard Temps for processor in basic use.

Yanush7 said:
I think better app for cpu temp is CPUZ. It gives you more info.
Right now I'm on custom rom (superman rom) and with custom superkernel 1.4 and it seems like the phone overheats less - but I do not really know what are the good standard Temps for processor in basic use.
Click to expand...
Click to collapse
How do you know your phone 'overheats'? Does it show any message on the screen saying it is or does it self reboots? If it doesn't, it's not 'overheating', basic logic.
My S6 has 'overheated' only twice, it self rebooted.
Sent from my Samsung Galaxy S6 using XDA Labs

Black Screen Of Death

Hi All
Has anyone had any issues with a black screen?
Everything else works like incoming calls and notifications but the screen it totally black!
Woke up early hours last night and noticed no AOD so tried to turn my phone on but the screen was just dead. Tried the volume and power button but still no joy

Power it down completely then plug in the charger.
If nothing shows on the screen it sounds like you lost some significant hardware... maybe just a connector.

toddyc said:
Hi All
Has anyone had any issues with a black screen?
Everything else works like incoming calls and notifications but the screen it totally black!
Woke up early hours last night and noticed no AOD so tried to turn my phone on but the screen was just dead. Tried the volume and power button but still no joy
Click to expand...
Click to collapse
Same happened to my SM-N9860 unit when I woke up today. I about to unlock and the display suddenly went black screen. Did everything but no luck. I am also sure it's the display that's f***d up. The phone is still working - I can still access it in Dex and Link to Windows. This is my second Samsung phone with f**d up display for unknown reason. This is crap Samsung. Not expecting for this from an expensive flagship smartphone. I swear this is the last.

toddyc said:
Hi All
Has anyone had any issues with a black screen?
Everything else works like incoming calls and notifications but the screen it totally black!
Woke up early hours last night and noticed no AOD so tried to turn my phone on but the screen was just dead. Tried the volume and power button but still no joy
Click to expand...
Click to collapse
By the way, how did you fix your phone?
I tried searching it on the net, seems a number of Note 20 ultra units are experiencing the same.
https://us.community.samsung.com/t5/Note20/Note-20-Ultra-Black-Screen-Phone-no-display/td-p/1437825
Seems that display replacement is the only fix.

tribalfs said:
By the way, how did you fix your phone?
I tried searching it on the net, seems a number of Note 20 ultra units are experiencing the same.
https://us.community.samsung.com/t5/Note20/Note-20-Ultra-Black-Screen-Phone-no-display/td-p/1437825
Seems that display replacement is the only fix.
Click to expand...
Click to collapse
Poor parts QC.
Samsung will substitute components and smaller chipsets in the middle of a production run. This can lead to unpredictable behavior especially after firmware updates... or outright failures like this.
Not reassuring especially with a flagship phone.

blackhawk said:
Poor parts QC.
Samsung will substitute components and smaller chipsets in the middle of a production run. This can lead to unpredictable behavior especially after firmware updates... or outright failures like this.
Not reassuring especially with a flagship phone.
Click to expand...
Click to collapse
Yeah. Very disappointing.

I can't believe it but my screen unexpectedly revives itself after a day.

tribalfs said:
I can't believe it but my screen unexpectedly revives itself after a day.
Click to expand...
Click to collapse
Time will tell. Intermittents are the hardest hardware failures to troubleshoot...

blackhawk said:
Time will tell. Intermittents are the hardest hardware failures to troubleshoot...
Click to expand...
Click to collapse
Agree. But I am happy that it's working fine now and I hope it will not recur.

tribalfs said:
I can't believe it but my screen unexpectedly revives itself after a day.
Click to expand...
Click to collapse
hi im facing exact same thing in my N986 B Galaxy Note 20 Ultra. I had 10 percent battery left. i had put phone on charge and saw after 20 minutes and tghe screen was black.
Now its blackscreen can connect with tv via hdmi dex mode
but phone restarts after 10 minutes.
the touch seems fine as mouse function works phone is on but no display
can you tell exactly what you did when your phone revieved after one day
did u keep it on. charge all tiime tried reset or removed charging
or nothing and tried after 1 day
Edit After 24 hours of tapping slappingrebooting installing stock firmware. my display came back alive.
last thing was i was using phone in dex mode and trying to open close camera app rapidly by direct touch on screen. i dont know what worked but it saved my 300 dollars of screen replacement

I have exactly the same issue.
I was typing on whatsapp when suddenly screen get black. It was on friday morning. Notifications were ok, voice commands too. Touchscreen ok, I could use it normally when using my TV as screen with HDMI cable or with my notebook, when connected to windows or even Dex.
One day earlier I had an issue with the new magisk update. I freeze magisk manager wich was force closing but later, I managed to reinstall with dex and was working fine. Not sure if it's related.
I already flashed fresh stock Android R rom, wich I thought would solve any issues related to magisk or any other software issue.
24h after flash stock rom and keep force rebooting and taping, and my display is still dead.
Tried to tap, slap, shake (I can her some noise next to camera module when shaking, is it normal? I took off S-pen and microsd tray to see if it was the cause, but the noise still persists). No damage, water, or anything else. Only 2 months of use.
Display is still dead.
I'm draining battery now with some apps that also vibrate phone, to see what happens when full drained.
I live in Manaus/Brazil and repair centers are not working until March 23 because of Sars-CoV2. And my knox is tripped. It would cost a lot If I have to replace display or even the phone, since they probably will say it's no longer covered by warranty.
Any tips are welcome.
Thanks in advance.
Hope I have that lucky as well.

It happened to me again today. Surprisingly, a strong knock at center of the screen revived it again.

tribalfs said:
It happened to me again today. Surprisingly, a strong knock at center of the screen revives it again.
Click to expand...
Click to collapse
Hardware failure. May be a loose connection, cracked solder joint, trace failure on the mobo, or a bad component.
Intermittents are the hardest problems to find...

blackhawk said:
Hardware failure. May be a loose connection, cracked solder joint, trace failure on the mobo, or a bad component.
Intermittents are the hardest problems to find...
Click to expand...
Click to collapse
Yes, obviously. Samsung already replacing displays of those who are having this issue.

tribalfs said:
Yes, obviously. Samsung already replacing displays of those who are having this issue.
Click to expand...
Click to collapse
Not good if there's a recall... crap QC is getting to be a bad Samsung habit.

Those of you with BSOD issues: Did you have intermittent wifi connectivity issues as well? My N20U had the 'connected to wifi AP but no internet' for the last month. Then today after unplugging the OEM charger, checking charge level, never picking the phone up from the desk, and returning to it 30 minutes later the BSOD had hit. No amount of hard restarts or waiting fixed it and it had to get shipped back. Just wondering if there is any correlation between the wifi issue and the screen going out, and if people should start sending their note in ASAP if the wifi problem occurs before the screen goes?

hello
i had the same problem (didn't have any Wifi issues before)
and after the screen went black for 2 day , it came back and worked for a few hours.. then went off again and Never came back
i tried everything, resets , cables , connecting to Dex or Hdmi , updating.. but Never worked
i went to Samsung and they said screen must be replaced ( will pay for it as i am out of warranty)
can you tell me what have you done or if anything worked for you?

My screen went black after a screen replacement. Only the front glass was broken not the digitizer or actual screen. From what I can tell it's not just the screen that's dead, it's the digitizer too. The S-Pen board underneath it all isn't even registering. When I plug it in the computer doesn't see it so Dex won't connect and there is no signal for HDMI to work. Had the USB port replaced just to be sure it wasn't a bad port.
It's like some one took the graphics card out of a computer and took the touch screen monitor. The phone still gets signal. It connected to my smart Fossil watch and I could answer calls and texts.
But the phone is 9 months old. And from what I've heard from parts distributors it's not the screen that's the issue. So now I have a new motherboard. Now I have to figure out how to program it....