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Phone keeps restarting before Samsung logo

I recently flashed CM9 (throwing that out there incase it is of some reasoning but I doubt it) and I've had my phone since November.
I flashed CM9 9/25 Nightly like 2 or 3 days ago (absolutely love it by the way, smoothest build/rom for the Skyrocket thus far) No problems with the Rom I might add, just my phone had just randomly restarted on its own twice while using it (nothing happened, just started right back up).
However the 3rd time, it randomly restarted and never booted back up. It vibrates and then reboots before it even gets to the Samsung screen and reboots/vibrates again (2 second intervals or so). The furthest it gets is like 5 seconds into the CM9 logo and then it'll reboot. It does the usual thin white line as it restarts and just gets stuck there. Can't get to Recovery for more than a few seconds before it reboots (not long enough for Touch to settle and do anything) and it won't get to Download Mode fast enough. Any ideas or any way to get data off /emmc? Don't want to lose a bunch of pictures/videos.
I have a replacement coming within the next days so I have about 2 weeks to either get lucky and get up long enough to save my data or somehow find a solution (doubt it). I already took it apart and swapped screens because I had busted the screen before and put the broken one in incase by some miracle the new one was causing it (no luck).
No water damage or anything to the phone, just randomly rebooted those times while texting or listening to music/what not and now it's pooped.
Any suggestions?
Tried without the battery (via usb/pc or AC source), without sim/microsd, etc. and nothing. Assuming I'm just SOL.
Edit: Side note, I got terrible battery life with this phone. I could only get 2 hours of screen-on time if I was LUCKY on Mobile and maaaybe 3 if I was on WIFI. The most I ever got was 5 hours on WIFI with a 3850mAh Extended Battrey (so even though it was a cheap battery, I'm thinking the phone had a problem from the get-go).

You Could Have A Stuck Power Button. To Fix That Try To Repeatedly Keep Pushing The Power Button Hard To Try To Unstick It. or try taking it apart and clean the power button

vincom said:
You Could Have A Stuck Power Button. To Fix That Try To Repeatedly Keep Pushing The Power Button Hard To Try To Unstick It. or try taking it apart and clean the power button
Click to expand...
Click to collapse
This was my first thought, didn't make a difference no matter how I did it. Appreciate the idea though.

[SOLVED] It is indeed the power button.
I took it apart again and thoroughly mashed the power button plenty and gave it a good few breaths of fresh air.
After that I realized that, I put it back together and realized that if I held the power button right after the phone vibrated it seemed to get to the CM9 symbol more often.
So I mashed the power button a ton more, shook the phone like hell and smashed it against my palm a few times and...it booted! I was able to get everything off of it and reset flash/counter/restore to stock all without ever touching the power button. Screen Timeout @ 30 and using ADB is your friend. Now just to see if it magically works till my replacement gets here lol.

hd2k10 said:
[SOLVED] It is indeed the power button.
I took it apart again and thoroughly mashed the power button plenty and gave it a good few breaths of fresh air.
After that I realized that, I put it back together and realized that if I held the power button right after the phone vibrated it seemed to get to the CM9 symbol more often.
So I mashed the power button a ton more, shook the phone like hell and smashed it against my palm a few times and...it booted! I was able to get everything off of it and reset flash/counter/restore to stock all without ever touching the power button. Screen Timeout @ 30 and using ADB is your friend. Now just to see if it magically works till my replacement gets here lol.
Click to expand...
Click to collapse
i know its sounds too simplistic as to blame a sticky power button and users dismiss the idea because they'll blame themselves, a bad flash, or the rom, but a reboot at a 8-10sec interval is the power button internal switch making contact, sometimes its an easy fix or sometimes it takes more than a few tries, or taking it apart to clean the internals

My phone goes anywhere now from 10 seconds to a full day without having a reboot with continuous vibration at 2 second intervals. Flashed to stable ROM's so that's definitely not the issue. I've had this phone since Christmas 2011 so I'm assuming I don't have warranty? You guys just unscrewed the screws and got into the internals I'm assuming?

[Q] Power button is causing phone to reboot nonstop

So, tonight I just turned my screen on and then off real quick to check if I have any messages and set my phone down. Then I look down and see the Samsung logo. I'm a bit confused and notice that the Samsung logo keeps showing for 1-2 seconds going black for 1-2 seconds and then back to the Samsung logo for 1-2 seconds, over and over. I pull the battery and then when I put it back in, the phone starts doing it again before I touch any buttons. Clearly something is causing my power button to be "on" continuously. This seems to be a relatively common problem from doing some searching, but most of the posts I find seem to be full of people responding who fail to understand the problem. People seem to think that this is a boot loop and that it can be fixed by going into download mode. This is clearly not the case, the problem is obviously with the power button since the phone automatically starts up and keeps doing this as soon as the battery is reinserted regardless if no buttons are pushed or all buttons are pushed. Has anyone managed to fix this problem? I'm thinking I'm going to have to take the infuse apart and see if the button is stuck or if there contact occuring somewhere it shouldn't be. Any help would be appreciated.

Yeah, i have this problem. First what i did, i'd hit gently the power button a few times and it seemed to work. But after a few days it got worse, till the point it wouldn't work. I decided to open up the phone myself, and trying to manipulate the small power button. Apparently it worked, but i decided not to use the power button anymore, i wake the phone by touching the volume +/- buttons and i turn it off with a widget i downloaded from the playstore. This problem seems to be on every infuse i'm saving up some money to buy another phone, since i won't be able to sell this one with this problem.
Sent from my Infuse4G using Tapatalk

Here is a video of a screen replcement- not what you are doing but it shows you how to take the phone apart. Hope this helps.
http://www.youtube.com/watch?v=1WS5I0SpL6c

Thanks for the link. I took it apart using that and cleaned everything and just clicked the power button a whole bunch and its working again for now.

Pony Express said:
Here is a video of a screen replcement- not what you are doing but it shows you how to take the phone apart. Hope this helps.
http://www.youtube.com/watch?v=1WS5I0SpL6c
Click to expand...
Click to collapse
Nice one, bro.

z3ddicus said:
So, tonight I just turned my screen on and then off real quick to check if I have any messages and set my phone down. Then I look down and see the Samsung logo. I'm a bit confused and notice that the Samsung logo keeps showing for 1-2 seconds going black for 1-2 seconds and then back to the Samsung logo for 1-2 seconds, over and over. I pull the battery and then when I put it back in, the phone starts doing it again before I touch any buttons. Clearly something is causing my power button to be "on" continuously. This seems to be a relatively common problem from doing some searching, but most of the posts I find seem to be full of people responding who fail to understand the problem. People seem to think that this is a boot loop and that it can be fixed by going into download mode. This is clearly not the case, the problem is obviously with the power button since the phone automatically starts up and keeps doing this as soon as the battery is reinserted regardless if no buttons are pushed or all buttons are pushed. Has anyone managed to fix this problem? I'm thinking I'm going to have to take the infuse apart and see if the button is stuck or if there contact occuring somewhere it shouldn't be. Any help would be appreciated.
Click to expand...
Click to collapse
It happens that to one of my infuse before and i send it so Josh @ http://mobiletechvideos.mybigcommerce.com/ he replaces my power buttons and services is amazing and shipping is fast.

[Q] BOOTLOOP please help :(

Hello everyone, I am looking for some help !!!
I have been using embryo for quite some time and no issues.... I have a i727R and just out of the blue today I was using it and it auto rebooted on me.... now it is in a bootloop... just boots to the samsung logo and then reboots (viberating over and over) with no screen indication
I can not get into CWM recovery either.... I have never had this happen to me ever and I am worried... I am on the road right now and XDA is my only source for help... can ANYONE please give me any suggestion how maybe I can get this phone working? I have a bad gut feeling I am going to have to go buy a new one for retail
anything at all would be great
Thank you
I did not change anything on embryo , it has been working for months 5.0 .5.1 and 5.2 just running stock embryo, no modifications to kernals or anything no overclocking nothing, just as is
PLEASE help I would love your for it and willing to donate if required
I can not access download mode either... i get the prompt to access download mode and the phone just reboots on me again
i popped out the batt for a good 20min ... i turn it on.... i get the I727R splash screen, then the samsung logo... then it vibes and reboots and keeps vibeing over and over .....
I put batt in it boots I hold volume down..... i get the screen for download mode, and once the full screen displays it just reboots and vibes over and over .... i think it might be bricked or pouched... but i didnt do anything to it which is what is bothering me.... im just looking for ways now to odin it to restore stock ... but i dunno how to fix this
I plug it into usb as well and it just vibes and vibes over and over again

Sounds like a stuck power button. Take a needle and carefully work around the edges of the power button to dislodge whatever debris is holding it down. There are also a couple of guides on here you can search for that'll show you other ways of handling it.

T.J. Bender said:
Sounds like a stuck power button. Take a needle and carefully work around the edges of the power button to dislodge whatever debris is holding it down. There are also a couple of guides on here you can search for that'll show you other ways of handling it.
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Click to collapse
After the initial boot of seening a spash screen.... it doesnt show the screen anymore... it just sits in my hand vibeing every 2 seconds no screen nothing, just vibe .... vibe .... vibe ... vibe , not even touching it
should i send it back to samsung ??
power button seems fine i have had a otterbox defender series case on it all the time....

unibombz said:
After the initial boot of seening a spash screen.... it doesnt show the screen anymore... it just sits in my hand vibeing every 2 seconds no screen nothing, just vibe .... vibe .... vibe ... vibe , not even touching it
should i send it back to samsung ??
power button seems fine i have had a otterbox defender series case on it all the time....
Click to expand...
Click to collapse
its a stuck power button, keep mashing it until it unsticks, its internally stuck, not noticeable from exterior

vincom said:
its a stuck power button, keep mashing it until it unsticks, its internally stuck, not noticeable from exterior
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Click to collapse
yah i did the needle thing no luck .... when i plug the charger in with no battery it just sits there and vibes over and over .... when i pop the batt in, it boots , i get the i727 splash screen, hold vol down for download mode... and it just reboots, after that, no screen, just vibe , vibe , vibe

unibombz said:
yah i did the needle thing no luck .... when i plug the charger in with no battery it just sits there and vibes over and over .... when i pop the batt in, it boots , i get the i727 splash screen, hold vol down for download mode... and it just reboots, after that, no screen, just vibe , vibe , vibe
Click to expand...
Click to collapse
Did you keep mashing it down like vincom said to do? Trust me, this is a well-known and very common problem with Skyrockets.

T.J. Bender said:
Did you keep mashing it down like vincom said to do? Trust me, this is a well-known and very common problem with Skyrockets.
Click to expand...
Click to collapse
yes it is not the power button..... cant be .... i mashed and used a needle and everything.... i go to download mode and hit vol up to enter it and she just reboots on me

if i plug the phone in with or without the battery it just vibes over and over again, doesnt even boot up once ..... but when i boot it with battery this is what happens
1 - put battery in phone
2 - first samsung splash screen (i727R)
3 - second samsung screen (2-3 seconds)
4 - reboot
5 - vibes over and over (no screen indication) continuous vibe
I am dead in the water on this problem (I was just using the phone like normal answering an sms and while typing it just rebooted on me and this issue above happened.
1 - put battery in phone
2 - hold volume down
3 - download mode spash screen
4 - auto reboots (vibe over and over) (no screen)
1 - put battery in phone
2 - hold volume up and down (CWM)
3 - reboots (vibe over and over) (no screen)
1 - battery removed
2 - plug in via USB (charger)
3 - no screen (vibe over and over) (no screen)

unibombz said:
if i plug the phone in with or without the battery it just vibes over and over again, doesnt even boot up once ..... but when i boot it with battery this is what happens
1 - put battery in phone
2 - first samsung splash screen (i727R)
3 - second samsung screen (2-3 seconds)
4 - reboot
5 - vibes over and over (no screen indication) continuous vibe
I am dead in the water on this problem (I was just using the phone like normal answering an sms and while typing it just rebooted on me and this issue above happened.
1 - put battery in phone
2 - hold volume down
3 - download mode spash screen
4 - auto reboots (vibe over and over) (no screen)
1 - put battery in phone
2 - hold volume up and down (CWM)
3 - reboots (vibe over and over) (no screen)
1 - battery removed
2 - plug in via USB (charger)
3 - no screen (vibe over and over) (no screen)
Click to expand...
Click to collapse
Have u tried takn the phone apart and cleaning it that way?? Cant guarantee it will work but its worth a shot
Sent from my SGH-I727 using xda app-developers app

jyazzie110 said:
Have u tried takn the phone apart and cleaning it that way?? Cant guarantee it will work but its worth a shot
Sent from my SGH-I727 using xda app-developers app
Click to expand...
Click to collapse
phone is clean, it has been in a otterbox defender the whole time, has invisable shield full body shield too
i just opened up the phone and nothing is restricting the power button so i am out of ideas

unibombz said:
phone is clean, it has been in a otterbox defender the whole time, has invisable shield full body shield too
Click to expand...
Click to collapse
I qould give it a shot anyways.....seeing uve tried a can of air, mashing the button and using a needle around it as well. Seems like ur only option or send it in for repair or warranty
Sent from my SGH-I727 using xda app-developers app

unibombz said:
phone is clean, it has been in a otterbox defender the whole time, has invisable shield full body shield too
Click to expand...
Click to collapse
That alone has me convinced it's a stuck power button. Defenders are great for keeping your phone from being smashed, but they trap all kinds of dirt and dust underneath them. Almost positive your problems are being caused by a speck of something or other that got forced way down into your phone's housing and is holding your power button down internally.

T.J. Bender said:
That alone has me convinced it's a stuck power button. Defenders are great for keeping your phone from being smashed, but they trap all kinds of dirt and dust underneath them. Almost positive your problems are being caused by a speck of something or other that got forced way down into your phone's housing and is holding your power button down internally.
Click to expand...
Click to collapse
I managed to open the phone and there is no issue with the power button being stuck .... It is now looking more like a software issue.... I can not access download mode or cwm perhaps with some of the issues i was having with the rom just made the phone go stupid and get caught in a boot loop not to doubt the rom ... just saying everything was fine for months and the phone just decided to auto restart on me and this happened

[Q] GS4G keeps reseting every 3 seconds

Hello.
I have searched the forums about my issue, and although there are a lot of threads about phones rebooting, there was none about such exact problem as I am experiencing. I apologize if I missed a thread which tackled this problem.
Symptoms:
1. my galaxy S 4G reboots about every 3 seconds: it only gets to the very first "Samsung Galaxy S 4G T-mobile" logo, and reboot
2. it is possible to access boot menu (volume up+down), but only for a split second, and phone reboots again
3. rebooting starts as soon as in put battery in, no need to even press the power button
All that started by itself yesterday. I thought it was a mechanical fault with power switch, I opened the phone, unscrewed covers, cleaned everything, but found no mechanical issue. I switched batteries, tried starting the phone of plugged-in charger, on usb cable, took out sd card, sim card, put a different sim card in... and nothing helped.
Phone runs on Gingerbread 2.3, stock by T-mobile, never had any other roms on it. Device is rooted.
If anyone has an idea how to approach this issue, please let me know. Or reply with a link to somewhere I can read more. I was not able to find much on this...
Thank you!
Malarz

The phone sometimes does a reboot loop if u take the battery out of the phone without turning the power off. Just keep trying to turn it on, and eventually it would reboot properly. Take the battery out of the phone for a few minutes, put it back and try to turn it on again. Do this a few times to see if it boot back properly.
Hit the thanks button if it helps. It's my motivator to be more helpful.

gizmoscoop said:
The phone sometimes does a reboot loop if u take the battery out of the phone without turning the power off. Just keep trying to turn it on, and eventually it would reboot properly. Take the battery out of the phone for a few minutes, put it back and try to turn it on again. Do this a few times to see if it boot back properly.
Hit the thanks button if it helps. It's my motivator to be more helpful.
Click to expand...
Click to collapse
Thank you for a prompt reply!
I did take out battery for a long time, well over one hour, and took out sim card and sd card as well. Unfortunately reboot loop started immediately when I placed battery back in the phone. That's what made me think it was a mechanical issue with power button.
I will try keeping battery out a few times again today.
One other thing: the phone had been in hot and humid environment for about 30 minutes before this happened. Not the first time for this phone to experience high humidity, though. However, I did not find any moisture inside the unit.
Malarz

I had this happened to my phone. Just wait it out and keep trying to reboot, it will come around. Take the battery out and put it back on. Keep on repeating this step.
Also, when the phone is on, try to hold the volume - + and power button at the same time to see if u can get into boot mode.
Also u can use hair blow dryer to blow dry area around the power button.
Hit the thanks button if it helps. It's my motivator to be more helpful.

Or, batt is dead...

You have a stuck power button. Take apart the phone and clean the power bottom with compressed air. Then rapidly push the button in and out for a while.

Resolution:
I took the phone apart, and checked the power button (which had been my first guess), and was seemingly all right.
The battery was also not the issue, as I tried 3 different batteries.
Having no other choice, I put the battery back in, and let the phone happily reboot at its own leisure. After over 20 reboots, the system came on. Then a few minutes later the device rebooted again, and the loop started all over. After a while it booted up again. This time I did not wait for the device to reboot by itself, and I switched the phone off with power button, and then turned back on, and it booted normally. Repeated this once more - normal boot again. One more power off, and I entered the boot menu and did factory reset. Once the stock reinstalled, everything would work perfectly - no more issues with boot loop.
So it seems to me as a software problem more than anything else.
Side note: for the last several weeks the phone displayed strange behavior, that is the screen would light up for no reason by itself, and quickly go off. Sometimes it happened once every few minutes, sometimes it happened several times a minute. Did it have anything to do with the boot loop? No idea. But it strengthens my hunch about a software issue, as that behavior also went away after factory reset.
Sorry for the lengthy post, but since I have not found a similar case anywhere in the forums, I though someone might find this interesting. I do not deal with phones except as a user, but some of you guys do it maybe professionally, so maybe this will be a curious puzzle for you to solve.
Malarz

It sounds like Gremlins....
Sent from my Amazon Kindle Fire using xda app-developers app

Do you have notifications set up? It could notify that u have incoming messages such as a text or an email.
Hit the thanks button if it helps. It's my motivator to be more helpful.

Malarz said:
Resolution:
I took the phone apart, and checked the power button (which had been my first guess), and was seemingly all right.
The battery was also not the issue, as I tried 3 different batteries.
Having no other choice, I put the battery back in, and let the phone happily reboot at its own leisure. After over 20 reboots, the system came on. Then a few minutes later the device rebooted again, and the loop started all over. After a while it booted up again. This time I did not wait for the device to reboot by itself, and I switched the phone off with power button, and then turned back on, and it booted normally. Repeated this once more - normal boot again. One more power off, and I entered the boot menu and did factory reset. Once the stock reinstalled, everything would work perfectly - no more issues with boot loop.
So it seems to me as a software problem more than anything else.
Side note: for the last several weeks the phone displayed strange behavior, that is the screen would light up for no reason by itself, and quickly go off. Sometimes it happened once every few minutes, sometimes it happened several times a minute. Did it have anything to do with the boot loop? No idea. But it strengthens my hunch about a software issue, as that behavior also went away after factory reset.
Sorry for the lengthy post, but since I have not found a similar case anywhere in the forums, I though someone might find this interesting. I do not deal with phones except as a user, but some of you guys do it maybe professionally, so maybe this will be a curious puzzle for you to solve.
Malarz
Click to expand...
Click to collapse
Hardware not software. You had a stuck power button. By forcing the reboot with the power button you unstuck it. If you don't believe it research Occam's razor. Glad you got it fixed(unstuck) though.:victory:
EDIT: Here are some other people who have had the same issue on samsung phones.
Stuck power button
Stuck power button
Stuck power button
If you need any more let me know. lol

[Q] Telstra One XL wont turn on after screen replacement

Hi Everyone,
I'm have a problem with my One XL. It's an Australian Telstra item. I got soaked in the rain and the phone got wet. I put it in rice for a few days to soak up the moisture, then charged it up. After this the screen backlight would intermittently fail, and i noticed if I squeezed the LHS of the phone it would sometimes make the screen go on or off. The problem got worse over the space of about an hour and eventually the screen would not come on. I opened up the case, and noticed there was a split in the ribbon cable that is part of the screen at the point that it is folded over 90deg (I'm not sure why this was never a problem before the phone got wet?)
So I stupidly got straight stuck into taking it apart to replace the screen before backing up all my stuff. I ordered a new screen of ebay and replaced the old one. Now I am having the following behaviour:
1-Press and hold power button - Phone vibrates once, then does nothing. Screen doesn't come on.
2-Plug into PC - LED flashes red for a while then goes solid red. Screen doesn't come on. Nothing pops up in "My computer"
3-Press and hold (~10sec) power after 2 - Red light goes off. Phone vibrates once every ~30 seconds. Screen doesn't come on.
4-Press and hold power after 3 - Home/Back/Apps LEDs flash 20 times, no other change.
I also tried a number of combos of power + vol -/+ with no success.
Also, I was being lazy and doing this without putting the case back on, and my power button has fallen apart. It looks like that ribbon cable is only ~$5 on ebay, so no big deal, but means I cant really do anymore troubleshooting at the moment.
So I guess the big question is, can the phone still be salvaged? I'm thinking maybe it's stuck in a boot loop with the screen also not working?
Any help is greatly appreciated.
Cheers,
Chris

The first question I have would be did you make sure you got the right screen? There are three different types of screens that came on this phone and you need to make sure you match it correctly. You can identify the type of screen by the colour of the flex cable attached.
Secondly, you should never use the power + volume up button combination, I'm not sure where you saw that information but it puts the phone into Qualcomm download mode which you definitely don't want. The only button combination that should ever be used is power + volume down.
Sent from my Evita

Hi Timmaaa,
Both screens had the same orange/brown flex cables. I did read that there were different screens, but had thought there were only two and that the other had a green flex, so I definitely didn't get that one. Are the other 2 colours close?
I'm not sure where I read the power + volume up thing as I have read a heap of different threads. What would the expected behaviour be if I had put it into that mode?
Thanks for your help.
Cheers,
Chris

The three different screens have very different colour coding on the flex cable, so matching should be a piece of cake, which I believe you've done correctly. Putting the phone into Qualcomm download mode is kinda like a bricked state, if you're getting the red charging led and the cap button lights flashing I think you're ok.
Another thing to note is that you usually need to sync your new screen when you install it. From memory I believe you need to power the phone on, remove the old screen while the phone is on, and install the new screen while the phone is on. If you didn't follow this process that might be why your display isn't working. Other than that your phone might have just suffered some fatal hardware damage due to the liquid ingress, which isn't going to be fixable.
Sent from my Evita

Thanks again Timmaaa,
I had a closer look at my old screen and it does have the small green section on the flex cable which I didn't notice the first time around. Bugger.
So i disassembled it again and swapped back to the old screen. The display still doesn't turn on, but the phone itself now stays on and the computer recognises it! I'm transferring all my photos across to my computer now, then I'll try to sync it properly and see if that helps.
Cheers,
Chris

Ok so I swapped the screens back and forth with the power on, and now it's working! Thanks Timmaaa, I would never have guessed I needed to have the phone turned on in order to swap parts, seems pretty weird. Now just got to get a new power button.
Cheers,
Chris

Awesome. Glad to be able to help.
Sent from my Evita