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i727 skyrocket stuck in continous reboot loop and doesnt get past start screen

I I have a Samsung Galaxy S2 Skyrocket i727 (with stock firmware and ROM), i dont have a SD card and not too many apps installed either, maybe 10-15 apps at most. Today while the phone was in my pocket it just went into this continous reboot cycle, it reboots, gets to the AT&T splash screen and then reboots again and then this goes on forever.
I googled the hell out of this issue but cant seem to find a solid solution and hence hoping u guys can help.
I cannot get into recovery mode cause it never gets past the splash screen
I cannot seems to perform a hard reset (power button + volume key) , it just reboots again.
I tried plugging the phone and connecting via USB but it doesnt help either, it reboots before the computer can detect the phone.
Hope u guys can help ? life without android is no fun...

Stuck power button
Sent from my SGH-I727 using Tapatalk 2

The_Blue_Waffle said:
Stuck power button
Sent from my SGH-I727 using Tapatalk 2
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anyway to fix it or m i close to a paperweight by now. I do not have warranty on this phone
I explored the stuck power buton option and lightly banged the phoen around in hopes that it would let loose but no luck.

The_Blue_Waffle said:
Stuck power button
Sent from my SGH-I727 using Tapatalk 2
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This. Google "stuck power button Skyrocket" for info on a fix.
Sent from my SAMSUNG-SGH-I727 using xda app-developers app

needle arounf the edges of the button works majority of the time if not then have fun with the google search
Sent from my SAMSUNG-SGH-I727 using xda premium

T.J. Bender said:
This. Google "stuck power button Skyrocket" for info on a fix.
Sent from my SAMSUNG-SGH-I727 using xda app-developers app
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Click to collapse
Hulk Smash

Try a different battery

alienn4hire said:
Try a different battery
Click to expand...
Click to collapse
...
A new battery will do nothing to fix a stuck power button.
Sent from my SAMSUNG-SGH-I727 using xda app-developers app

crashpsycho said:
needle arounf the edges of the button works majority of the time if not then have fun with the google search
Sent from my SAMSUNG-SGH-I727 using xda premium
Click to expand...
Click to collapse
I had this same issue with my LG Phoenix, I tried the needle around the power button, and that popped it back to normal. Apparently I held the button down to a side and it got stuck even though the actual button part was in it's "normal," position.
However it did reboot several more times after I got it unstuck. I did remove the back & battery, & unplugged it. Let it sit for a few minutes, after that I put the USB cable back in, then pressed the power button, put the battery back in and pressed the button again, and it went through the normal reboot process.

Just wanted to give you guys an update that i started cleaning the part around the edges as some folks suggested and that failed. then tried smacking around and blowing air into and that failed. Then took the entire phone apart and cleaned it several times using different techniques and sad to say that it all failed and i m SOL.
Bummer but it is what it is and i was quiet happy with that phone.

asfi99 said:
Just wanted to give you guys an update that i started cleaning the part around the edges as some folks suggested and that failed. then tried smacking around and blowing air into and that failed. Then took the entire phone apart and cleaned it several times using different techniques and sad to say that it all failed and i m SOL.
Bummer but it is what it is and i was quiet happy with that phone.
Click to expand...
Click to collapse
Did you offer up Bacon to the phone as a snackrifice?
I'm sorry that none of these options worked out for you.

Its very easy to open I changed a motherboard for a hard bricked i727 very easy to change power button or unstuck it
Sent from my SAMSUNG-SGH-I727 using xda app-developers app

intelxtreme said:
Its very easy to open I changed a motherboard for a hard bricked i727 very easy to change power button or unstuck it
Sent from my SAMSUNG-SGH-I727 using xda app-developers app
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Click to collapse
Where does one find a power button for the skyrocket (the one attached to the motherboard)? The closest thing I could find was this:
http://mobiletechvideos.mybigcommerce.com/samsung-galaxy-s-ii-skyrocket-power-button-repair/
It is a repair service though and I live in Canada, I would prefer if I could just order that part. I have been to few repair shops that cant do anything because this power button is hard to find. I opened up the motherboard and the power button clicks fine, so I think it probably has to be replaced.

Freezing the phone
I had the same issue, came here and read all the things about the stuck power button and needing to replace whatever is beneath it. My friend works in aerospace and had told me about one of the things they need to worry about is temperature causing wire shrinkage due to temperature. For whatever reason, I decided to use that logic and throw my phone in the freezer wrapped in a dry rag. 30min later and the phone finally worked after 8 hours of the boot loop/no boot. That was around November and I haven't had an issue with it since (until today, but it is a different issue).

nobel662 said:
I had the same issue, came here and read all the things about the stuck power button and needing to replace whatever is beneath it. My friend works in aerospace and had told me about one of the things they need to worry about is temperature causing wire shrinkage due to temperature. For whatever reason, I decided to use that logic and throw my phone in the freezer wrapped in a dry rag. 30min later and the phone finally worked after 8 hours of the boot loop/no boot. That was around November and I haven't had an issue with it since (until today, but it is a different issue).
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Click to collapse
can any one else confirm this? my phone keeps shutting off. when the screen is black, itll vibrate every second. im assuming its another stuck power button.

Boot loop!
thilly said:
can any one else confirm this? my phone keeps shutting off. when the screen is black, itll vibrate every second. im assuming its another stuck power button.
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Click to collapse
I have just fixed mine!!!!
There is a little battery on the circuit board when you take apart the phone. It looks like a small watch battery. Top side is and bottom side are opposite polarities.
I had the exact same symptom. Sometimes just pressing the power button momentarily would bring up the power down menu, then I knew to press it a bunch of times because it was stick. If I didn't eventually it would turn off and vibrate constantly. It kept getting worse.
I measured with an ohm meter and the button itself seems fine so I figured maybe the digital logic relating to the button itself is faulty. So I shorted the little battery on the board (do this only for a brief period, no more than 1s) and put it back together.
Its behaving perfectly normally. I was also getting weird artifacts during video playback before, kind of like what failing solder would do on a bga gpu. It fixed that too.
So I think its similar to that problem some laptops have, where it wont turn on until you remove the battery, hold the power button down a couple times, and then plug it in. It seems a complete circuit discharge fixed this problem at least for me.
If people are interested I can try to find a picture
removed link
In that picture its the silver shiny metal circle. To short it you connect the bottom soldered part to the metal plate on top of the battery. This comlpetely drains all circuits.
So I think a lot of these problems are caused by a phantom charge. In any sense, Im very very happy
Also this could explain why the fridge method worked. Cooling the battery can significantly drop its charge, however I would advise against the cooling method if possible.
EDIT: blah cant post links... if anyone needs the image pm me your email

coolerbean said:
Where does one find a power button for the skyrocket (the one attached to the motherboard)? The closest thing I could find was this:
http://mobiletechvideos.mybigcommerce.com/samsung-galaxy-s-ii-skyrocket-power-button-repair/
It is a repair service though and I live in Canada, I would prefer if I could just order that part. I have been to few repair shops that cant do anything because this power button is hard to find. I opened up the motherboard and the power button clicks fine, so I think it probably has to be replaced.
Click to expand...
Click to collapse
You'd need to find a friend or local electronics repair shop, but I ordered some here:
http://www.etradesupply.com/oem-samsung-galaxy-s-ii-skyrocket-sgh-i727-power-button.html.
The buttons are $0.99 USD if you buy 2 or more ($1.05 CAD), but 5-7 day business shipping is like $16.99. Still cheaper than a replacement phone, and it's an easy fix for an electronics person or electronics/tv/computer repair shop... At the rate these power buttons have had reported failures, and for the price, I'd get a couple of them in case the replacement fails in the future...
If my wife keeps squeezing the power button on her phone when some crappy app she has wigs out, I'll be needing my second button sooner rather than later...

why when one person says it something everyone band wagons on that idea. i actually had the same issue my skyrocket couldn't go pass the "samsung" screen. all i did was flash a new rom or i just restored an old backup

phillytothemax said:
why when one person says it something everyone band wagons on that idea. i actually had the same issue my skyrocket couldn't go pass the "samsung" screen. all i did was flash a new rom or i just restored an old backup
Click to expand...
Click to collapse
Then it was user error or a bad flash. And that's software, not hardware.
Skyrocket power buttons are known to fail. I believe Samsung has even acknowledged this.
When your phone randomly goes into a 1-second vibration cycle, sometimes showing the reboot menu beforehand without pressing the button, more than likely it's the power button that has either failed or is sticking.
With my wife's phone, the button was not sticking, and usually lightly tapping the phone at the right angle on your lap or the counter would break the vibration cycle and let it boot up, until the next random power button press and vib cycle would happen.
Button replaced, same exact ROM, and problem gone. :thumbup:
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

asfi99 said:
I I have a Samsung Galaxy S2 Skyrocket i727 (with stock firmware and ROM), i dont have a SD card and not too many apps installed either, maybe 10-15 apps at most. Today while the phone was in my pocket it just went into this continous reboot cycle, it reboots, gets to the AT&T splash screen and then reboots again and then this goes on forever.
I googled the hell out of this issue but cant seem to find a solid solution and hence hoping u guys can help.
I cannot get into recovery mode cause it never gets past the splash screen
I cannot seems to perform a hard reset (power button + volume key) , it just reboots again.
I tried plugging the phone and connecting via USB but it doesnt help either, it reboots before the computer can detect the phone.
Hope u guys can help ? life without android is no fun...
Click to expand...
Click to collapse
I have a repair shop and i fix these issues with no problem. the only issue im located in Puerto Rico. when the power button gets stuck is because of heavy use, a fall or something that makes a lot of pressure to it and the copper contacts inside the button stay making contact. this is know to happen to i727-i717-i997-i897 and some other galaxy s1 s2 models.
i attached the picture of the power button.

[Q] Need help with blank screen after replacement

Hi all. I'm having an issue with a 727R. I replaced a broken screen and now can't get the screen to stay on. Its a non rooted, factory 2.3.5 phone. When I turn it on, the sghi-727r screen pops up for several seconds and then dissappears, phone vibrates once, notification sounds appear shortly and all touch functions appear to work (by sound and haptic feedback). For all intents and purposes, this phone is on and working perfectly...if you're blind lol. I know the replacement screen works because it works perfectly if I go into download (odin) mode. I've been searching threads and haven't been able to come up with a solution, as most of the other blank screens are from bad flashes. Keep in mind that I am also testing this with the casing removed as it is a repair for a friend (if that makes any difference). Any help or ideas would be greatly appreciated and thanks in advance.

Is the brightness maybe turned ALL the way down? When it finishes booting shine a flashlite on the screen and tell me if u can see text, icons etc...

I'll do that as soon as I get home this afternoon. I could only hope that's all it is, but i'm a little skeptical that I could be so lucky. forgot to mention that I have also odin flashed the stock rom back on just in case of software corruption. I would also think that I would get full boot logo's during the boot sequence, but hey!....its definately worth a shot! I've seen stranger things . Thanks for the quick response.

norm182 said:
I'll do that as soon as I get home this afternoon. I could only hope that's all it is, but i'm a little skeptical that I could be so lucky. forgot to mention that I have also odin flashed the stock rom back on just in case of software corruption. I would also think that I would get full boot logo's during the boot sequence, but hey!....its definately worth a shot! I've seen stranger things . Thanks for the quick response.
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Click to collapse
No worries, keep us informed. I didn't even bother to ask because I just assumed someone at your level who can change a screen would intuitively know to Odin stock... I was right :good:

It a ribbon cable issue when I swap dismantling my SR's I ran into that twice swapped out screen and no issues after
Sent from my SGH-I727 using Tapatalk 2

crashpsycho said:
It a ribbon cable issue when I swap dismantling my SR's I ran into that twice swapped out screen and no issues after
Sent from my SGH-I727 using Tapatalk 2
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So you had display for start of boot and d/l mode? If so, then I'll go no farther until I get another replacement screen.:crying:. Come to think of it, when plugged in and off, the charge symbol shows up for a second and its discoloured (almost like its made of vertical lines that are pinks and grays). You may have just saved me a lot of time. I was leaning toward trying to adb error logs in hopes of finding something. Other than that it was going to be a reflow on the gpu since the phone did do a leap of faith from 6 ft up....and lost lol.

icenight89 said:
Is the brightness maybe turned ALL the way down? When it finishes booting shine a flashlite on the screen and tell me if u can see text, icons etc...
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Click to collapse
No dice icenight. Tried out of hope but its completely black. I was really hoping for maybe a fault that could be fixed with a flash.....whoa is me....looks like I may be sending screen back and getting another. I cant send it out for another day so if anyone has any other ideas, or wishes to guinea pig this unit until one comes in, feel free to chime in. And thanks for the responses so far!

crashpsycho said:
It a ribbon cable issue when I swap dismantling my SR's I ran into that twice swapped out screen and no issues after
Sent from my SGH-I727 using Tapatalk 2
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Click to collapse
And the winner is....Crashpsycho! After months of trying to find a replacement, i finally got my hands on two of them for a decent price. Popped one in, odin'd jb stock and voila! perfect phone again. Thanks Crash!

[Q] Sensation XE hardware keys and touch issue

Hi, I have a sensation XE that i S Off-ed and rooted using FloWolf's EXCELLENT guide before installing CM 10.1-20130322-Albinoman887-pyramid. However, i started facing the issue of the hardware keys giving feedback when touched, but not working- instead, it happens as if the lowest part of the display, right above the key i pressed, has been touched. I updated to the 20130510 nightly but it did not fix the issue. I now want to try going back to the stock ROM but can't find an easy guide. I never took a backup of the stock ROM with CWM . I have the HBOOT 1.29 model
Now another issue has sprung up. Even when using a single finger, the phone sometimes behaves as if i'm multi-touching it. It only gets fixed if i lock and then unlock the screen.
Will going back to the stock rom fix these issues or will i have to get it repaired? If the stock rom will fix it, can i please get a link for it that's as easy as Flo's guide to rooting was. Thanks!

Omer Humayun said:
Hi, I have a sensation XE that i S Off-ed and rooted using FloWolf's EXCELLENT guide before installing CM 10.1-20130322-Albinoman887-pyramid. However, i started facing the issue of the hardware keys giving feedback when touched, but not working- instead, it happens as if the lowest part of the display, right above the key i pressed, has been touched. I updated to the 20130510 nightly but it did not fix the issue. I now want to try going back to the stock ROM but can't find an easy guide. I never took a backup of the stock ROM with CWM . I have the HBOOT 1.29 model
Now another issue has sprung up. Even when using a single finger, the phone sometimes behaves as if i'm multi-touching it. It only gets fixed if i lock and then unlock the screen.
Will going back to the stock rom fix these issues or will i have to get it repaired? If the stock rom will fix it, can i please get a link for it that's as easy as Flo's guide to rooting was. Thanks!
Click to expand...
Click to collapse
I am on ICS 4.0.3 and Stock ROM.
Since last few days, I am having somewhat similar touch screen issues after the warranty of my Sensation XE expired last month.
At any given random time of the day, my touch screen goes berserk....!!! I am using Apex Launcher and have folders containing various apps in the Dock. These folders start moving around/rearranging automatically, apps start opening randomly on their own, screen and navigation keys (red ones on bottom panel) become unresponsive, keyboard comes up on its own and characters appear as if being typed... etc. If I lock and unlock the screen (all hardware keys - volume & power - work fine during all this), touch screen becomes responsive again but only for a short period. Again the whole cycle repeats. The only way to stop this for longer period of time is restarting the phone. This state last upto anywhere between 6-10 hours be fore my phone acts up again. I have tried the Factory Reset too, but with no results.
I have installed Avast Mobile Security soon after I got my XE. I have also installed around 80-90 paid as well as free apps.
Currently my XE has free resources as follows:
RAM 640MB out of 1.1GB
SD Storage 25GB out of 29.71GB
Though the behavior looks like some kind of virus activity, Avast doesn't show any malware or virus on the system.
Which issue does this behavior pertain to, a hardware or a software issue?
Any kind of help to pinpoint the cause of this issue is greatly appreciated.
Thanks & Regards.

Hello,
I am having the exact same problem as the two mentioned above. Sometimes the thouch screen doesn't response at all, start doing things by itself or the capacitive buttons on the bottom doesn't respond. To fix the problem I have to press the on/off button to lock and unlock the phone but after a minute it's going all over again. I thought this maybe could be a memory problem, as if the phone simply hangs because it is acting very slow when the problem shows up.
Last weeks I've tried many ROMS as I thought it would be a mem problem. Cyanogenmod 10.1 and 10.2, ViperS 1.6.3 and 3.1.2, Android Revolution and with all these ROMS the same problem showed up. So I'm thinking it's almost for sure that this is a hardware problem. I got my Sensation XE in January 2012 so there's still a waranty of a half year. In case this is a hardware problem I'm thinking about sending the phone back to HTC, but I'm not sure about what is causing this problem.
So, if anyone knows the cause of this problem, please share It's really annoying and makes the phone pretty much unusuable. In October I will be able to get a new phone but it would be nice to have a very good one for spare
Thanks in advance!

Sibbevangeyn said:
Hello,
I am having the exact same problem as the two mentioned above. Sometimes the thouch screen doesn't response at all, start doing things by itself or the capacitive buttons on the bottom doesn't respond. To fix the problem I have to press the on/off button to lock and unlock the phone but after a minute it's going all over again. I thought this maybe could be a memory problem, as if the phone simply hangs because it is acting very slow when the problem shows up.
Last weeks I've tried many ROMS as I thought it would be a mem problem. Cyanogenmod 10.1 and 10.2, ViperS 1.6.3 and 3.1.2, Android Revolution and with all these ROMS the same problem showed up. So I'm thinking it's almost for sure that this is a hardware problem. I got my Sensation XE in January 2012 so there's still a waranty of a half year. In case this is a hardware problem I'm thinking about sending the phone back to HTC, but I'm not sure about what is causing this problem.
So, if anyone knows the cause of this problem, please share It's really annoying and makes the phone pretty much unusuable. In October I will be able to get a new phone but it would be nice to have a very good one for spare
Thanks in advance!
Click to expand...
Click to collapse
Put a thin foil between the metal pin on mid right and the back case.
Also search for touch screen issues in sensation forum. A lot of people have this issue.
Happy to help.

Far_SighT said:
Put a thin foil between the metal pin on mid right and the back case.
Also search for touch screen issues in sensation forum. A lot of people have this issue.
Happy to help.
Click to expand...
Click to collapse
Thanks a lot Far_SighT for pointing me in right direction.
As per the "Touchscreen Issues" topic in "General" category, my phone will be undergoing second cycle of "Pull Pin - Add Tin Foil - Drain Battery - Take out Battery - Press Power - Keep Battery outside overnight - Recharge fully without touching screen" procedure.
First cycle didn't help much, but as per the post I have to go through this cycle at least 2-3 times.
I will get back with the results.
Thanks & Regards.

Update:
Followed the steps in the "Touchscreen Issues" thread under "General" category, and it worked!!
All my touchscreen issues have been solved by that simple solution. A great post!!
Highly recommended for solving similar touchscreen issues, specially when you have dropped your phone.
Thanks & Regards.

radhx said:
Update:
Followed the steps in the "Touchscreen Issues" thread under "General" category, and it worked!!
All my touchscreen issues have been solved by that simple solution. A great post!!
Highly recommended for solving similar touchscreen issues, specially when you have dropped your phone.
Thanks & Regards.
Click to expand...
Click to collapse
Can you elaborate which step you think fixed the issue of having to press the power button to make the screen responsive? I went throught a full battery discharge-leave overnight-full charge without touching the phone, but i did this procedure only once and didnt have the patience to try again as it didnt improve the situation at all.:cyclops:

usju said:
Can you elaborate which step you think fixed the issue of having to press the power button to make the screen responsive? I went throught a full battery discharge-leave overnight-full charge without touching the phone, but i did this procedure only once and didnt have the patience to try again as it didnt improve the situation at all.:cyclops:
Click to expand...
Click to collapse
Please follow my last post in "Touchscreen Issues" thread: http://forum.xda-developers.com/showthread.php?t=1239238&page=50
Mostly one cycle does not help as per my experience. I had to go through 3 complete cycles to get my XE fixed. It made huge difference only after second cycle.
Also, other than aluminum foil over the silver square on the side of back panel, place a piece of thin paper in the depression on the back panel (check the second snapshot in above thread) which should cover the metal casings of both SIM card and SD Card so that they do not touch the back panel.
The steps taken in the cycle after placing the foil and paper:
1] Drain the battery fully.
2] Remove the battery.
3] Press Power button as if trying to power on your mobile.
4] Leave the battery out for overnight.
5] Replace the battery and back panel taking care to see that both foil and paper are in correct positions.
6] Recharge your phone fully without touching the screen and without powering on (this to prevent you from using the phone. ).
7] Disconnect the charger and use your phone till battery drains out and phone is ready for next cycle.
Hope this is helpful to sort out your issue.:fingers-crossed:
Thanks & Regards.

Far_SighT said:
Put a thin foil between the metal pin on mid right and the back case.
Also search for touch screen issues in sensation forum. A lot of people have this issue.
Happy to help.
Click to expand...
Click to collapse
Thanks for the tip but did that already. I read the OP well and a lot of pages in this topic but no luck so far. Stopped even trying because half October I will have a new phone, the One to be exact. So it's no use.
What I did try was the recalibration of the touch screen by flashing the image file. That worked for a few days maybe and now it's drama all over again. Sometimes I pull out the battery for a night, push the on/off button blabla but no luck too. I think it's actually half broken because on some spots on the screen it's registering no touch. I do have to admit my phone fell a couple of times past 2 years, without a case or something. So I guess for me the only option is a new digitizer.
Like i said, I really would like to have a good spare one. Went looking on E-Bay and for 16 dollars I found a digitizer for the Sensation 4G. I have a XE, will that work with that digitizer? A digitizer for the XE was 23 bucks, but if only the color of the capacitive buttons are different I don't care and I save 7 bucks
Thanks!

Screen randomly turns off but phone still on, backlight often stays on

Hey guys, i'll try to explain the situation as best i can below, hopefully someone can work out what is wrong.
My phone is about 16 months old. About 2 months ago i dropped it twice within the space of a couple weeks. There were a few cracks along the screen, however it wasn't very noticeable and i wasn't going to bother having it fixed. The problem started a couple of weeks ago when i went to grab it out of my pocket, however i found out the screen was black and it wouldn't turn on. I don't really know how to describe it but it was acting very strange...
- The screen would have white/gray bars all over it then turn off, then it would do the same with very thin vertical lines that were white/gray/other colours...
- When i get the screen on, it generally turns off again within 30 seconds, however it can stay on for a few minutes.
- If the screen is on and i press the lock button, it almost certainly won't come back on.
- Restarting the phone or holding the power and volume button nearly always gets the screen to come back on. It often then restarts but turns off again shortly after.
- The phone is otherwise still working when the screen goes off; the notification light stays on and i hear messages etc coming through
- The backlight often stays lit, revealing a gray screen opposed from total black. Sometimes it does not stay lit however.
- When the screen came on it was often unresponsive to touch
I had the screen replaced yesterday by a phone repair shop and the phone is still not right. I have factory reset the phone and also wiped the partition cache. Other than that it is still not working. IT seems to be working better... The screen always seems responsive to touch when it is on, and it doesn't seem to be turning off as often. It generally starts up and works fine when i start up by holding the power button and down volume button together... However even still it sometimes just flashes up with a few thick white/gray and black lines on the screen..
Does anyone know what can be causing this and how i can resolve it? If you need any more information please let me know and i will try provide it. I could try get some pictures of what the screen is doing when i finish work. Thanks guys, i appreciate any input.
EDIT: I managed to get a pic of what i mean by the thin vertical lines all over the screen. This just appeared when i tried to restart the phone after it the screen had once again stopped working. The imgur link is gIFMGD6

Anyone have any ideas?

Hey, did you ever figure this problem out? My phone just started doing the same thing. Can't find much info about it.

angrysammich said:
Hey, did you ever figure this problem out? My phone just started doing the same thing. Can't find much info about it.
Click to expand...
Click to collapse
Yeah, i had the screen fixed hoping it would fix it, however that didn't work. Turns out it was the motherboard, don't know what was wrong with it in particular other than it was simply going faulty. Had someone replace the motherboard on it for $50 and have had zero problems since! Hope that helps you.

Thanks for the response. I tried replacing the screen too with no luck. Unfortunately the same place that replaced the screen said it would cost $400 to replace the motherboard!!! The phone cost less than that so it looks like I'm gonna buy a new one.
ClangaBanga said:
Yeah, i had the screen fixed hoping it would fix it, however that didn't work. Turns out it was the motherboard, don't know what was wrong with it in particular other than it was simply going faulty. Had someone replace the motherboard on it for $50 and have had zero problems since! Hope that helps you.
Click to expand...
Click to collapse

[Q] Stuck on booting up Samsung screen

Hi,
My Note Pro 12.2 P900 64gb is now stuck on the samsung screen of booting up and I am wondering if anyone can help me figure out what to do next.
I was experiencing the flickering issue for the last two weeks which got progressively worse and eventually caused random rebooting. One time last week it started booting slower and then it wiped out some widgets on my start screen and the apps in touchwiz but most everything else was OK. Then yesterday it would not boot up past the samsung screen. It charges up OK, and I can get to Odin where it asks if I want to load another operating system by holding power and vol up. But unless it is plugged in, just holding power off puts it in a boot loop.
The other part is if it is stuck and I hold power off it usually vibrates twice before boot looping.
I rooted the tablet when I got it, but still run stock touchwiz, I just needed some rooted apps namely LMT pie controls.
Can anyone please point me towards what to do next. Thank you very much for your help.

I guess wiping data and factory reset is your only solution right now
I shall warn you you could lose your data so I hope you already have a backup!
And also I've read that lollipop fixed flickering issue in p900 devices
I hope everything goes well for you
Good luck

hey there, you are not the only one, check this post. it seems is somethig related to battery issues
http://forum.xda-developers.com/showpost.php?p=61785158&postcount=14

minionhunter said:
The other part is if it is stuck and I hold power off it usually vibrates twice before boot looping.
Can anyone please point me towards what to do next. Thank you very much for your help.
Click to expand...
Click to collapse
When power on, try pressing on the back, near the center with your hand. to see if it can boot normally,
Keep pressing while power on. if it works I will tell you what causing this problem.

https://www.youtube.com/watch?v=VeSG0hHpAG8
here you can look by the minute 2:30 where the connector is located, basically under the samsung logo. I'm not doing tests yet because i have a busy day ahead

Thank you all for the responses. Holding down the back while powering on does not help. I do have the flickering thing and that started leading up to this. Lay night I took it the battery and disconnected it for a half hour and that did not help. Looking at the connections with a 20x hand lens did not reveal any cracks.
I don't remember how to wipe the data off the device, I got it right when it came out rooted it with cf root and never got around to twrp. All I wanted was LMT and Xposed. I never even updated the OS.
If anyone can help walk me through this to get it running again I'll send you a green poetic skin used once or a white well used GumDrop hideaway case I tested for work. I just would like to get this running instead of needing to purchase a new one.
Thank you again. Sincerely.

Flickering screen is caused by cracked battery connector which cannot be seen under magnified glass. Re solder will fix it, trust me I did fix some of them

Beut said:
Flickering screen is caused by cracked battery connector which cannot be seen under magnified glass. Re solder will fix it, trust me I did fix some of them
Click to expand...
Click to collapse
So resolder the 6 posts connecting the battery connector to the motherboard? Is there anything special I need to do that, just my soldering iron with a fine tip and solder? Anything special I need about the solder or do I need a wik or anything? The last time I did any soldering work was about 25 years ago.
Also will this fix the bootlooping and hanging on booting up at the Samsung word on the screen? If it is not going to fix that problem, maybe I should look at something else first.
Thank you very much again for your help.
Sincerely

minionhunter said:
So resolder the 6 posts connecting the battery connector to the motherboard? Is there anything special I need to do that, just my soldering iron with a fine tip and solder? Anything special I need about the solder or do I need a wik or anything? The last time I did any soldering work was about 25 years ago.
Also will this fix the bootlooping and hanging on booting up at the Samsung word on the screen? If it is not going to fix that problem, maybe I should look at something else first.
Thank you very much again for your help.
Sincerely
Click to expand...
Click to collapse
First, pressing the battery connector help your tablet to boot is a confirmation of cracked battery connector solders. 90% flickering problem is from cracked battery connector. 10% is bad battery. You should fix the battery connector first as it's major defect seen in many Samsung tablets. Re solder is simple, apply flux, then heat these pins and add more solders as possible to secure these pins. Even new main board, this connector will crack just after 3 or 4 months depending how you use your tablet, especially with who using it on their laps. The main board sits on a flexible LCD and only 3 screws to hold it to the frame at 2 speakers. You don't need to remove the main board, just disconnect your battery and re solder the connector from the top.
Be careful as this connector is very close to other components. Trust me, this re work will fix this problem as I have seen in some cases, battery jumps up from 8% to 45% after the re work, other cases pressing the battery connector help the tablet to boot or stop flickering.
This person applied the fix and succeed.
http://forums.androidcentral.com/sa...screen-flickering-problems-3.html#post4473418
I have the Note Pro 12.2 and I had this same screen flickering issue. It would start to flicker at first around the 38% mark. I did research online and found this thread and many others. I tried the software fixes like the enabling of Developer Mode and screen brightness and other tries, but to no avail. When I pressed on the back of the tablet, the screen flickering would stop but then shortly return. So I saw the fix of trying to raise the motherboard which worked for about 2 weeks, then the screen flickering did return. It would then start to flicker around the 58% battery level mark and when it got down to around 26%, the tablet would shut down. When I plugged it in, it would show battery level of 0%, then quickly jump back up to the 26% mark when it shut itself down. So then by this time, I saw more of this thread and now was shown the soldering of the battery connectors. I had soldering equipment, but it was too large for this repair as these 6 pins are very close together. So I went to the hobby shop and purchased new equipment for about $30 with a smaller pin to be able to do this. Now, I am not an electronics guy and my past experience was replacing two bad capacitors on my Plasma TV when it went bad. That was the extent of my experience to date. So I opened up the back of my tablet and soldered the 6 pins again and the screen flickering has not returned. I am on my 5th battery cycle from 100% all the way down to 2% and the screen flickering and shutting itself down has not returned. Some people have said an electronics guy will do this for you for around $30. Well, I spent the $30 and did it myself. I want to thank the people for posting the solutions here as the soldering worked for me.
And from this post, a confirmation that repair center will do the same thing to fix flickering , auto reboot, auto shut down.....etc...all problems caused by cracked battery connector ( Connector Header ):
http://forum.xda-developers.com/showpost.php?p=58943998&postcount=74

Ok I'll try to resolder it this weekend and report back. I think that my pertinent problem is that I have both the battery issue AND another problem that the tablet won't boot up at all but I will try the battery fix first and see what happens. Then I will report back.
Thank you very much for your suggestions.

Your feedback is very important as I see many " Hit and Run " users, they get the solution they need but never post back. Your first priority is fixing the battery connector, then next is the battery if problem persists.
This is a hardware defect I have seen in many Samsung tablets: battery capacity fluctuation, quick discharge, auto reboot, auto shutdown.......all come from battery connector . Read the threat Flickering Screen you'll see others try all solutions but never work because they don't know this is a hardware problem coming from this tiny connector.