Phone Constantly Vibrate and Won't Boot - T-Mobile Samsung Galaxy S II SGH-T989

SGH-7989D
This phone will sometimes partially boot into the OS but constantly vibrates. It's running stock firmware. When I put it into download mode it vibrates and goes black and just keeps vibrating, this black screen and vibrating has now become the phones native state. The vibration almost seems like a boot loop but I've never seen this happen in download mode before.
Any suggestions?

Sticky power button
Sent from my SAMSUNG-SGH-T989 using xda premium

Sounds like a sticky power button. If you're willing to take your phone out you have a possibility of fixing it.
The original thread from where I learned how to solve this can be found HERE.
I go into detail on how I was able to fix the problem myself HERE.
Good luck!

t989BeLikeItDo said:
Sounds like a sticky power button. If you're willing to take your phone out you have a possibility of fixing it.
The original thread from where I learned how to solve this can be found HERE.
I go into detail on how I was able to fix the problem myself HERE.
Good luck!
Click to expand...
Click to collapse
Thanks for the resources, I will let you know how it turns out.

Related

(q) fixing stuck volume button

Does anyone know how to fix the volume buttons when they get stuck. My volume down keeps on being a problem. Just randomly muting and booting into safe mode when it turns on. It's also hard to press
Sent from my Desire HD using XDA App
FCW said:
Does anyone know how to fix the volume buttons when they get stuck. My volume down keeps on being a problem. Just randomly muting and booting into safe mode when it turns on. It's also hard to press
Sent from my Desire HD using XDA App
Click to expand...
Click to collapse
have the same problem
same problem here. seems like a simple problem, but makes the phone totally useless.
rather strange how suddenly this problem arises with 3 different cases in just 3 days.
For me its definately a hardware issue. The phone had blatently been dropped as there was some damage there. It wasnt even clicking when I pressed it. I seem to have got it to work again now but Im going to try find a spare part for it in case it happens again although finding one seems to be an issue.
Here you go
http://cgi.ebay.co.uk/ORIGINAL-HTC-...K_Replacement_Parts_Tools&hash=item3cb89dd305
raze599 said:
Here you go
http://cgi.ebay.co.uk/ORIGINAL-HTC-...K_Replacement_Parts_Tools&hash=item3cb89dd305
Click to expand...
Click to collapse
cheers dude. I managed to find the HTC dissasembly video on youtube as well I wont be posting a link on here though because its the official HTC one with a warning about its distribution. I dont want to be responsible for the trouble it could cause the site. But Im sure you'll all be able to find it though

[Q] Turns on by itself after pressing the power button?

Hi All,
I would like to describe something which I'm not sure if it is just me or a bug. There have been a few occasions where I have pressed the power button to put the phone to sleep and after a second, the screen turns back on again. I've tried to replicate it by maybe the way I have pressed it and it could have a residual effect on the button, thinking I want to turn it on again but I've not been successful. It just happens on and off.
Other than that, I love my HTC One X. Just like to find out if others do encounter this. Thanks! =)
erniechua said:
Hi All,
I would like to describe something which I'm not sure if it is just me or a bug. There have been a few occasions where I have pressed the power button to put the phone to sleep and after a second, the screen turns back on again. I've tried to replicate it by maybe the way I have pressed it and it could have a residual effect on the button, thinking I want to turn it on again but I've not been successful. It just happens on and off.
Other than that, I love my HTC One X. Just like to find out if others do encounter this. Thanks! =)
Click to expand...
Click to collapse
Thought it was just me, looks like it's a bug.
Same here, doesn't always happen
Same here, but happened only 3 or 4. Also i was unable to reproduce it on purpose.
Great, at least I'm not alone and it is not due to my way of pressing the power button. Hope HTC fixes this bug in the next update. Thanks all! =)
Me too!!!
same here
Mine does this too, also mines rooted with custom rom. I can replicate it if a press the screen lock button a few times it just shuts off, no shut down or any warning about what's its done. Do we know if this is a hardware or software fault as I guess my warranty is void after rooting.
Same here. I hope somebody can provide a solution.
I've had this before on my sensation but not on my HOX.. running cm10
Sent from Mars
Hmmm
Yup same ting happen to me I really thought it was me alone dat had dat problem and again I have a custom rom install, was even thinking or going back to original art ruu hoping it would solve the problem , the thing is its my back up fone incase of emergency I'm using my galaxy note 3 and now and them I keep hear a beep when I look the fone is on lol I just feel the one x has too many bugs
yeah.. same thing happened to me after i change my recovery to philz and rom to aosb.
Whenever i turn off my phone and charging, it will boot into recovery. after a while it will boot up itself as usual.
Never happened to me in stock recovery/rom... Not sure what is the cause
exquisite000 said:
yeah.. same thing happened to me after i change my recovery to philz and rom to aosb.
Whenever i turn off my phone and charging, it will boot into recovery. after a while it will boot up itself as usual.
Never happened to me in stock recovery/rom... Not sure what is the cause
Click to expand...
Click to collapse
man this is recovery future and it is kernel releated you can't turn off your phone when battery go to full will powered automatic and boot the rom.
Thant said:
man this is recovery future and it is kernel releated you can't turn off your phone when battery go to full will powered automatic and boot the rom.
Click to expand...
Click to collapse
Hi Thant,
Thanks for the info. But my battery doesn't even full or almost full. Even when my battery is only 8% left it will boot up automatically.
i wish they have option to turn the feature off..

Possible brick

Hi. Running TWRP with a CM10 Nightly (8/14 I think). Well I wasn't doing anything special and the phone decided to reboot and then just started the haptic feedback boot loop, no samsung logo. I took the battery out let it sit for about a minute and put it back in. Started on it own, got to a samsung logo and then rebooted back to the black screen and buzzing.
After everything I have tried I figured out it can boot into anything but only for about 10 seconds with pulling the battery and letting it sit. Download mode shows up then reboots. TWRP can boot up to the splash screen then it reboots.
I'm at work right now so I am unable to try any advanced methods for getting this back up, but download mode reboots worry me. Do I need to warranty it out?
Achmonster said:
Hi. Running TWRP with a CM10 Nightly (8/14 I think). Well I wasn't doing anything special and the phone decided to reboot and then just started the haptic feedback boot loop, no samsung logo. I took the battery out let it sit for about a minute and put it back in. Started on it own, got to a samsung logo and then rebooted back to the black screen and buzzing.
After everything I have tried I figured out it can boot into anything but only for about 10 seconds with pulling the battery and letting it sit. Download mode shows up then reboots. TWRP can boot up to the splash screen then it reboots.
I'm at work right now so I am unable to try any advanced methods for getting this back up, but download mode reboots worry me. Do I need to warranty it out?
Click to expand...
Click to collapse
From the looks of it, looks like a bad power button. Its a know problem with SGS2, been many similar threads done. Actually, it kind of worries me!! mobiletech will fix it for cheap, or you can warranty it out.
LoopDoGG79 said:
From the looks of it, looks like a bad power button. Its a know problem with SGS2, been many similar threads done. Actually, it kind of worries me!! mobiletech will fix it for cheap, or you can warranty it out.
Click to expand...
Click to collapse
Duh! Thanks, that makes a lot of sense. Appreciate it.
.
Achmonster said:
Hi. Running TWRP with a CM10 Nightly (8/14 I think). Well I wasn't doing anything special and the phone decided to reboot and then just started the haptic feedback boot loop, no samsung logo. I took the battery out let it sit for about a minute and put it back in. Started on it own, got to a samsung logo and then rebooted back to the black screen and buzzing.
After everything I have tried I figured out it can boot into anything but only for about 10 seconds with pulling the battery and letting it sit. Download mode shows up then reboots. TWRP can boot up to the splash screen then it reboots.
I'm at work right now so I am unable to try any advanced methods for getting this back up, but download mode reboots worry me. Do I need to warranty it out?
Click to expand...
Click to collapse
I got same problem today.I don't know how to deal with it.
You got a soft brick, you can restore via Odin.
Sent from my SAMSUNG-SGH-T989 using xda premium
quest4fire said:
You got a soft brick, you can restore via Odin.
Sent from my SAMSUNG-SGH-T989 using xda premium
Click to expand...
Click to collapse
It restarts on its own in DL mode and recovery, how will he be able to Odin?
Sent from AOKP Goodness
LoopDoGG79 said:
It restarts on its own in DL mode and recovery, how will he be able to Odin?
Sent from AOKP Goodness
Click to expand...
Click to collapse
Lol yeah bad power button
Sent from my SGH-T989 using xda app-developers app
Teo032 said:
Lol yeah bad power button
Sent from my SGH-T989 using xda app-developers app
Click to expand...
Click to collapse
what is bad button problem, can i ship the rooted phone to samsung customer service?
terrywang903 said:
what is bad button problem, can i ship the rooted phone to samsung customer service?
Click to expand...
Click to collapse
may be able to find someone locally who can fix it for your you or at the least unstick it long enough so you can odin a stock rom and send it on its way
playya said:
may be able to find someone locally who can fix it for your you or at the least unstick it long enough so you can odin a stock rom and send it on its way
Click to expand...
Click to collapse
Mobiletech has a power button service. I've heard its cheaper then JTAG.
Sent from AOKP Goodness
LoopDoGG79 said:
Mobiletech has a power button service. I've heard its cheaper then JTAG.
Sent from AOKP Goodness
Click to expand...
Click to collapse
what is Mobiletech ? where I can find it? Thank You!
terrywang903 said:
what is Mobiletech ? where I can find it? Thank You!
Click to expand...
Click to collapse
Here you go, very helpful site.
http://mobiletechvideos.mybigcommerce.com/samsung-galaxy-s-ii-t-mobile/
Sent from AOKP Goodness
This happened to my T989 a couple of days ago as well... I was pretty sure it wasn't a software brick as I hadn't been tinkering with the phone at all since putting CM9 on it a few weeks back. But an issue with the power button makes sense, I was actually able to boot it up and/or get it into recovery just by continually pressing the power button (guessing this interrupts the signal that the broken button is sending)... of course as soon as you stop pressing the button, the phone shuts off again.
I'll have to look into the mobiletech repair.
Temporary Fix to get your backup
I had a co-worker have this happen to her T989 that I flashed CM10 to. I was afraid that something had happened and she had unintentionally done something to brick the phone (it had been running fine for about a week prior to this). It is definitely hardware related, as you can just touch the power button and it goes into a screen wake/sleep fit of rage before finally hard resetting (presumably because it thinks the power button has been held down for 10 seconds). I was finally able to get it to stop rebooting long enough to get a TWRP backup and get them downloaded off of the phone so that she can get a replacement; and here is how I did it.
If you are getting boot cycle and it is vibrating every 3 seconds you can get it to "unstick" by putting your fingernail as far behind the power button as possibly and prying out. This will unstick it.
EDIT: I wanted to point out that I was most successful when I pried from the top or the back of the device. Sometimes when you pry it, if your finger slips it will redo the stick and will continue to reboot. So if at first you don't succeed...
Once you have done this, it is VERY sensitive. I literally had it start boot cycling one time after accidentally bumping the desk the phone was sitting on. Prying the button back allowed me to boot back up.
If you get it unstuck, be very careful about setting it down, turning it power button side up and even looking at it cross and you should be able to get it to stop rage quitting long enough to get a backup performed and even copied to your sdcard/computer.
I hope someone finds this useful.
On a side note: co-worker has purchased her phone outright and is planning on sending it back for a replacement. Should I flash it back to stock before that happens or since she owns it outright will they even care?
TIA,
Same thing happened to me awhile back and like said above, I sent it to MobileTechVideos and had my phone back within a week fixed and perfect. I have used MobileTechVideos twice now and both times they have fixed my T989 without problem.
Face_Melter said:
Same thing happened to me awhile back and like said above, I sent it to MobileTechVideos and had my phone back within a week fixed and perfect. I have used MobileTechVideos twice now and both times they have fixed my T989 without problem.
Click to expand...
Click to collapse
I sent the rooted phone to samsung. and get free repaired. It is amazing.

[Q] Rooted phone and now wont turn on

I recently Rooted my sealed samsung galaxy s3 without having a clue what i'm doing i downloaded this program called snapdragon to root it along with ODIN. The phone rooted fine everything was working okay, I even downloaded an app to see if the root was successful and indeed it was. I shut the phone down wake up in the morning to turn it back on and I get zero response. Any help/direction would be greatly appreciated.
Thanks!
Might seem obvious, but have you tried leaving it plugged in for ten-fifteen minutes?
joshnichols189 said:
Might seem obvious, but have you tried leaving it plugged in for ten-fifteen minutes?
Click to expand...
Click to collapse
Yes of course I've tried leaving it plugged in for several hours and the night before the phone was at 100% charge so I doubt battery is the issue.
Tks though
Did you try booting into recovery?
Sent from my SGH-T999 using xda app-developers app
Ummm seems like u can fix it.... go bak to stock using odin as well and go back to stock and i believe cwm is going to be gone so as your root access so re-do it but this time guide yourself through a turorial(a.k.a google) and since you have to clue i think the best choice for you is to find a video tutorial in case your doubting or getting confused with the steps or sometimes to see what you did wrong that caused the phone to misbehave...
Sent from my SGH-T999 using xda app-developers app
*sigh*
This is why I hate one-click-root kits, you get people doing things to their phones they don't understand, wreck it and come here saying "help, I don't know what do do!" Something like this you really should at least understand the basics. I hope this gets you more involved in researching what's actually happening. It's important to know what's happening to your device as well as why, that way if something goes badly you'll have an idea of how to get out of it.
Sorry, enough lecturing, let's see if we can get something going here. Give a bit more detail about what happens. You're phone is shut down, right? You hit the power button and no response, like the battery is actually out of the phone, or does it turn on and give you a blank screen? If it was a brick, I'd think you'd at least see the boot screen before everything goes wrong.
Ok, I'm going to go ahead and assume you've removed the battery. If you haven't, do so now.
If it still won't turn on, try actually holding the power button down for 30-60 seconds. I had a scary moment with my phone yesterday, rebooted it running Wicked v5 on Trinity and the screen just died. I've been running that rom for a week with just a couple of issues here and there, nothing out of the ordinary. Pulled the battery and tried again, nothing. After holding the power button down for a bit I felt a quick vibrate, then the boot logo came up. No idea why, I'm going to have to look into it.
Beyond that, I'm brand new to this phone and Sammy's Android devices so I'm still learning myself. HTC phones I could help out more with, but I'm still a bit clueless with this thing.
kitsunisan said:
*sigh*
This is why I hate one-click-root kits, you get people doing things to their phones they don't understand, wreck it and come here saying "help, I don't know what do do!" Something like this you really should at least understand the basics. I hope this gets you more involved in researching what's actually happening. It's important to know what's happening to your device as well as why, that way if something goes badly you'll have an idea of how to get out of it.
Sorry, enough lecturing, let's see if we can get something going here. Give a bit more detail about what happens. You're phone is shut down, right? You hit the power button and no response, like the battery is actually out of the phone, or does it turn on and give you a blank screen? If it was a brick, I'd think you'd at least see the boot screen before everything goes wrong.
Ok, I'm going to go ahead and assume you've removed the battery. If you haven't, do so now.
If it still won't turn on, try actually holding the power button down for 30-60 seconds. I had a scary moment with my phone yesterday, rebooted it running Wicked v5 on Trinity and the screen just died. I've been running that rom for a week with just a couple of issues here and there, nothing out of the ordinary. Pulled the battery and tried again, nothing. After holding the power button down for a bit I felt a quick vibrate, then the boot logo came up. No idea why, I'm going to have to look into it.
Beyond that, I'm brand new to this phone and Sammy's Android devices so I'm still learning myself. HTC phones I could help out more with, but I'm still a bit clueless with this thing.
Click to expand...
Click to collapse
Yes I have taken out the battery replaced it several times. I hit the volume home and power button several times. When I do that I get a zero response nothing shows up I hear no sound its as if the phone is just completely dead. One thing I did realise is when I plug it into the computer and press the power button what would happen is it would connect and automatically disconnect
Can you get into Download mode? Volume down + Home + Power button?
Sent from my SGH-T999
Don't forget to let go of the power button when going into recovery.
Have you done what the other post said?
Hold power for about 10-30 seconds. Does it do anything? Do you feel a verrrry slight vibration?
When you plug it in without doing anything else does the computer see it in device manager? How about if you press power once? Or holding power down?
Does it register that its charging?
This may sound dumb but did you try powering up without the phone plugged into anything?
Sent from my SGH-T999 using xda app-developers app
DocHoliday77 said:
Have you done what the other post said?
Hold power for about 10-30 seconds. Does it do anything? Do you feel a verrrry slight vibration?
When you plug it in without doing anything else does the computer see it in device manager? How about if you press power once? Or holding power down?
Does it register that its charging?
This may sound dumb but did you try powering up without the phone plugged into anything?
Sent from my SGH-T999 using xda app-developers app
Click to expand...
Click to collapse
Come on guys I respect the fact that everyone here is out here to help but read my post I have done every way common sense possible I actually need some real advice maybe how to reset factory setting with a device or maybe download a program.
Any help would be useful.
cyklosporine said:
I recently Rooted my sealed samsung galaxy s3 without having a clue what i'm doing i downloaded this program called snapdragon to root it along with ODIN. The phone rooted fine everything was working okay, I even downloaded an app to see if the root was successful and indeed it was. I shut the phone down wake up in the morning to turn it back on and I get zero response. Any help/direction would be greatly appreciated.
Thanks!
Click to expand...
Click to collapse
cyklosporine said:
Come on guys I respect the fact that everyone here is out here to help but read my post I have done every way common sense possible I actually need some real advice maybe how to reset factory setting with a device or maybe download a program.
Any help would be useful.
Click to expand...
Click to collapse
Ummm. Sorry but maybe im missing something? Your first sentence in your op says you didnt have a clue what you were doing....
And where is it supposed to infer that you've done everything already?
Imo you have been getting 'real' advice but from what I see you haven't 'really' answered anyones suggestions.
No one can help you if you dont tell us what exactly you have tried and what what happened when you did.
For example in your only response you mentioned hitting the volume and home keys a bunch of times....what exactly do you mean by this? Did you hold them while trying to power up? Volume up or down? Did you release any of them during that process, and if so which and when?
Its kinda hard to help someone who doesn't have a clue what they are doing and only responds that hes done everything common sense dictates.
I seriously mean no offence but to me common sense would dictate that you not try rooting or anything if you know you dont know what you're doing.
It would also dictate that if you want further help with this you should go back and respond to what everyone suggested.
Like I said, im not trying to offend, just help.
Sent from my SGH-T999 using xda app-developers app
I am having the same issue
I just tried flashing Android Revolution to my phone. I went through the whole set up process. Went to reboot then it went blank. Nothing. I get nothing when I plug it in. The computer doesn't recognize any device attached to it. I've tried all the ideas listed here and I get nothing. It's as if the phone is completely dead. When I flashed the rom my battery was at 90%. I've used various roms on different phones and this was the first time I did it to my Galaxy s3 and this is the first time it's ever happened. Talk about frustrating.
Jtag
Sent from my SGH-T999 using xda premium
lokitsar said:
I just tried flashing Android Revolution to my phone. I went through the whole set up process. Went to reboot then it went blank. Nothing. I get nothing when I plug it in. The computer doesn't recognize any device attached to it. I've tried all the ideas listed here and I get nothing. It's as if the phone is completely dead. When I flashed the rom my battery was at 90%. I've used various roms on different phones and this was the first time I did it to my Galaxy s3 and this is the first time it's ever happened. Talk about frustrating.
Click to expand...
Click to collapse
If you can get to download mode by holding vol up home power. You then you can use this. http://forum.xda-developers.com/showthread.php?t=1771687
To get our phone back. I had the same problem after a bad flash. My phone wouldn't do anything. After I left it plugs in for an hour I was able to get into download mode ..hope you get urs back. If its what happened to me then u might find that you have no 4g anymore... If that's the case let me know and I'll tell u what I did to get it back.
Sent from my SGH-T999 using xda premium
cyklosporine said:
Come on guys I respect the fact that everyone here is out here to help but read my post I have done every way common sense possible I actually need some real advice maybe how to reset factory setting with a device or maybe download a program.
Any help would be useful.
Click to expand...
Click to collapse
Yeah, good luck getting ANY further help with that attitude bro!!!
Sent from my SGH-T999 using xda premium
I got same problem with my friend's phone
He rooted it by some oneclick root pc program (I rooted this way too, and no problem will come) and flashes Rom with some android apk. ... After questioning him, I found out he DO NOT unlock bootloader.. .. I never seen phone in this status before... another strange thing is that when is phone in charger, battery and phone isn't heating up.. It's cold like ice... This is strange for me..I try 5 android devices and every is heating when it charging up.. (sorry for my bad English) Thank you and maybe someone comming with answers Phone doesn't react, no display brightness show up, no vibrating, no response
I have rooted my phone samsung galaxy grand 2 via odin after that flash the rom cm 11 and reboot my phone it got stuck into boot loop. Then i have done 1 stupidity again i push twrp file in that now m not able to go in recovery mode what should l i do now.
Wrong forum, look here: http://forum.xda-developers.com/galaxy-grand-2
I don't know anything about the phone but you could try looking for the current ROM on the phone at sammobile.com and then re-flash it via Odin.
i unluged the device before dhe odin finished his job ( by mistakeee ) and now it doesnt turn on , charge , go to recovery/odin , hold down power button for 30-60-120 sec nth hapend, it has baterri 90-100 % . plss guys help me :'( i have an samsung galaxy s advance .

AT&T S3 keepsing turning ON and OFF every 20 Seconds

Hey Guys,
I have a S3 AT&T and it just keeps turning on and off by its self about every 20 seconds. I have looked around and many people have this issue and there are a few solution out there but all of those solutions need my phone to stay on for a while. I can't do a hard reset and I can't do any kind of flash because it stays on for such a short time. Also the phone does not have water damage.
Below are the steps I have tried so far.
-Tried a new battery but same issue
-Thought maybe the power button was stuck but it looks fine.
-Tried to do hard reset and flash but does not stay on long enough
Not sure what else to do. Its killing me that I cant figure out how to fix it!! THERE MUST BE A WAY!
Thanks everyone!
PhoneHutSJ said:
Hey Guys,
I have a S3 AT&T and it just keeps turning on and off by its self about every 20 seconds. I have looked around and many people have this issue and there are a few solution out there but all of those solutions need my phone to stay on for a while. I can't do a hard reset and I can't do any kind of flash because it stays on for such a short time. Also the phone does not have water damage.
Below are the steps I have tried so far.
-Tried a new battery but same issue
-Thought maybe the power button was stuck but it looks fine.
-Tried to do hard reset and flash but does not stay on long enough
Not sure what else to do. Its killing me that I cant figure out how to fix it!! THERE MUST BE A WAY!
Thanks everyone!
Click to expand...
Click to collapse
Does it also happen in download mode and/or recovery?
x0ne215 said:
Does it also happen in download mode and/or recovery?
Click to expand...
Click to collapse
Yes it even in the download and recovery menu it does this.
I'm having this exact same problem. Even in download mode it'll reboot. In fact, even while rebooting it reboots. I was lucky in that it stayed in download mode long enough for me to ODIN back to stock, but it's still rebooting. Completely unusable because it never stays on long enough. Can anyone help?
Did it ever take a dive off the table or your hands?
It wouldn't surprise me if something internally was loose....
x0ne215 said:
Did it ever take a dive off the table or your hands?
It wouldn't surprise me if something internally was loose....
Click to expand...
Click to collapse
For myself, not recently. The phone was in perfect working condition, until I updated my ROM. Then when I woke up this morning, this problem occurred.
---------- Post added at 10:26 PM ---------- Previous post was at 10:22 PM ----------
hbk19 said:
For myself, not recently. The phone was in perfect working condition, until I updated my ROM. Then when I woke up this morning, this problem occurred.
Click to expand...
Click to collapse
Honestly, it seems to me as if the power button is stuck somehow. It doesn't look stuck to me, but the behaviour of the phone is like that. The constant rebooting, the way the screen turns on, and even how the power off menu randomly comes up by itself.
x0ne215 said:
Did it ever take a dive off the table or your hands?
It wouldn't surprise me if something internally was loose....
Click to expand...
Click to collapse
Mine has fallen before but nothing serious I'v dropped phones way worse then this. But I do think something is definitely loose. If I just leave the phone alone it doesn't power on or off. But as soon as I pick it up and move it, it powers on then in 20 seconds just goes off again.
Anyone have any idea what could be loose maybe?
Thanks
PhoneHutSJ said:
Mine has fallen before but nothing serious I'v dropped phones way worse then this. But I do think something is definitely loose. If I just leave the phone alone it doesn't power on or off. But as soon as I pick it up and move it, it powers on then in 20 seconds just goes off again.
Anyone have any idea what could be loose maybe?
Thanks
Click to expand...
Click to collapse
your best bet is too open up the phone and look at the connectors from the batter to the phone and make sure that those have a solid connection.
99% it is a power button failure. I as well as many others are suffering from this.
Try to avoid using the power button as much as possible. Use the home button to power on and find a softkey to turn your screen off. Easiest way is use quick toggles to turn off screen.
Sent from my Galaxy S3 on CM10.1 using XDA App

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