Phone keeps randomly rebooting into a loop - Samsung Galaxy Exhibit 4G

I have my Galaxy Exhibit (II) 4G for about a year and two weeks now. Warranty period is just over. I used Stock ROM in the beginning and have been using CM10(.1) roms for about 10 months.
Yesterday early night I noticed my battery suddenly diminished about 60% in 15 mins. Then I had it in the charger later, and I think I let it fall one time, like that happens sometimes. Since then my phone has been randomly rebooting and then looping either the battery sign or the Samsung sign.
Usually I can get it to boot up again with holding the power button, but sometimes I just keep pressing everything until something happens.
I can get into recovery. I tried wiping everything. I have tried deleting battery stats. I have tried other (non-oc) ROMs.
NOTE that sometimes it happens in recovery mode too, usually right as it is getting into it, so it might be totally non software related.
Do you guys think my phone is broken? Or is it worth trying to buy a new battery?

Turns out the phone thinks its on/off button sometimes is pressed, so it keeps rebooting. If I press it a couple times it's over. But then then next time there's always like a 50% chance that it gets stuck again...

Did you solve your problem because am facing the same problem. I can't even make it far enough to boot into recovery
Sent from my Nexus 7 using xda app-developers app

I'm stuck in the same problem, first I thought it was a physical problem but I had to get technical assistance of an expert and he confirms its rom problem. he's going to install stock again via some freaking hardware because with my pc I couldn't. Any suggestions?
Enviado desde mi GT-I9100 mediante Tapatalk

Defintly this guy couldn´t fix it, he reinstall the previous t-mobile original firmware and nothing happens, still rebooting. Another technician check it and told me he must replace a bootloader IC, I hope it works.

Now the "new technician" couldn´t fix the phone. He told my wife that previous Rom (cyanogenmod unofficial)"must have a virus and it infected the boot". I keep thinking is a hardware malfunction. Any suggestions?

If you got the ROM from xda I doubt it had a virus. Have you tried Odin back to stock yet. If not try that first.
Sent from my SGH-T679 using xda app-developers app

I dubted too, the problem is it can´t boot. I have the samsung logo, then it apears the Exhibit logo and shuts down, it keeps like that again and again. I managed to get download mode but the same, 3 sec after it shuts down so i can´t install anything.

Then ya i would have to agree that the device is defective.
Sent from my SGH-T679 using xda app-developers app

I had the same problem and i use to solve it by hitting the phone from the back and after i let it fall accidently it back to normal

I have the SAME problem!!!
ok so, my phone was awesome but since this is vacation time I decided to try a new rom, It was fine but then it started rebooting all the time. HOWEVER, I was able to try other roms after several attempts and think it's related to the calibration of the power button. It tries to stay awake but when I try and press the power button, that's when the problems start. Does anybody know of a way to calibrate the power button? I think that would be the solution, in case that's even possible. If not I'll have to buy a dumbphone for I don't have the money to spare on a new phone just now...

I had something similar happen this weekend. This may not apply to everyone, but I found that after pressing the power button over the course of two years the thin plastic "arms" that hold the power button inside the case have become stretched and weakened. Went back to stock to eliminate every conceivable variable. It would continue to reboot even without touching it, with or without a case. Essentially, the power button is resting against the motherboard's power module, or rather stuck and wreaking random havoc.
I fixed it and haven't had a reboot this week by using tweezers and squeezing the posts that hold the power button arms in place tightly against the outer shell. The objective is to create as much resistance as possible and have the power button spring away from the mobo. The power button has rubber pads that, when pressed, pushes against the mobo power module, so to create more distance I filed down the pads a few mm's. If it happens again I will resolder the points and remap the keys, until then I went ahead and cleaned the solder points with a q-tip and rubbing alcohol.
Removing the outer shell takes some time to break the glue apart without damaging anything, so take that into consideration and move at insect speed if anyone considers this approach for the first time. The best reference I can spot is at http://www.youtube.com/watch?v=I3dAOv2Oke0&t=6m11s where the power button is on the right hand side of his right hand. I'll try taking photos or video if it happens again.

I'll try this
jfbs said:
I had something similar happen this weekend. This may not apply to everyone, but I found that after pressing the power button over the course of two years the thin plastic "arms" that hold the power button inside the case have become stretched and weakened. Went back to stock to eliminate every conceivable variable. It would continue to reboot even without touching it, with or without a case. Essentially, the power button is resting against the motherboard's power module, or rather stuck and wreaking random havoc.
I fixed it and haven't had a reboot this week by using tweezers and squeezing the posts that hold the power button arms in place tightly against the outer shell. The objective is to create as much resistance as possible and have the power button spring away from the mobo. The power button has rubber pads that, when pressed, pushes against the mobo power module, so to create more distance I filed down the pads a few mm's. If it happens again I will resolder the points and remap the keys, until then I went ahead and cleaned the solder points with a q-tip and rubbing alcohol.
Removing the outer shell takes some time to break the glue apart without damaging anything, so take that into consideration and move at insect speed if anyone considers this approach for the first time. The best reference I can spot is at http://www.youtube.com/watch?v=I3dAOv2Oke0&t=6m11s where the power button is on the right hand side of his right hand. I'll try taking photos or video if it happens again.
Click to expand...
Click to collapse
Again, all your symptoms are identical to mine so I'll try this and update on it ASAP. Thanks for the help!!!

Related

Someone who took their G1 apart - help me out!

Hello
I've got my greedy hands on G1. Phone was free so I can't loose on that lol. Gal who gave it to me said that all it does for her when she powers it up is going into Hboot screen I applied dreaimg.nbh, got it to boot into rc29 and realized that I had no simcard in it. I powered it off, put sim in it and powered it back on and now I'm looking at Hboot screen again. I can boot into recovery just fine though but selecting reboot from that menu takes me back to rainbow. I can also reboot with 3-finger salute but again, it takes me to Hboot.
I have a feeling that this is a problem with camera button rather then software, did anyone fix this successfuly? Is there a way to physicaly disconnect camera button from main motherboard? Any insight is appreciated.
I'm not a noob, I can troubleshoot software issues but i've never taken this phone apart so I'm clueless.
Thanks in advance.
Ok, so I found this thread and I guess there's no easy way to just disconnect camera button. I still would like to know if anyone recovered from such a problem. Thank you in advance.
I have not taken the G1 apart, but I was a hardware troubleshooter for much of my professional career. My first guess is that the button is stuck not shorted. Always try the simple things first. Look at the button cover, does it protrude from the case slightly, or does it look pressed in. Even if the button cover is not pressed it, it is possible the button itself is stuck. in this case, tap it against a hard surface a few times. Hey it was a free (broken) phone, what have you got to loose. You can probably tap what would seem to be a little too hard without hurting it. If that doesn't work, then you may need to take the phone apart and check the button state. Does it push in, pop back out. If not you may be able to physically pull the button back out. If it does, then it's possible the button is messed up/shorted inside. By the looks of the pictures, the only fix is to unsolder the button.
Those are the steps I would take. Always start simple and work up from there. And always be open to something that seems unrelated that you may find along the path but ends up being the problem.
Hope it helps
scott
Scott
I don't have t5/t6 screwdrivers handy so I did not quite take it apart. I did nowever pry the camera button (plastic part of it) out slightly, enough to see inside. I found that the actual button does work, i.e. it goes in and pops out on it's own. I tried tapping it as well, harder then most people would probably. Still the same problem. Oh well, I have one more trick up my sleeve. When I got the phone it was super cold because it was left in the car overnight (way below freezing temps, those MN winters you know) so may be I can do it again... who knows, like you said, what do I have to loose?
Thank you for your opinion.

Power Button Problem

Recently I've been having issues with my power button. When I attempt to press and hold it to bring up the "Power off," "Reboot phone," etc. menu, it immediately just shuts off the screen. It isn't recognizing the long-press action. Pulling the battery is almost always the only option I have to shut down the phone. Very frustrating. Anyone have a similar issue or suggestions on how to remedy the situation? Thanks.
Well if you're trying to reboot or go to recovery/fastboot you can download quick boot from the market. Not sure how to fix your shut off screen problem though.
Yeah, I've been a Quick Boot user for quite some time. It's actually shutting down the phone that I'm having a problem with. I just can't figure out why it won't recognize my long-press anymore. It just immediately turns off the screen. Very frustrating.
I have the same problem
I tried with hard reset and different original rom but the problem persists, I think it's a hardware problem.
there's a post around that describes how to clean the power button which usually fixes it. will try to find it.
behelit said:
there's a post around that describes how to clean the power button which usually fixes it. will try to find it.
Click to expand...
Click to collapse
Sweet. Thanks!
http://forum.xda-developers.com/showpost.php?p=6681240&postcount=9
EDIT: I was having to use a Gscript to power off/reboot the phone.
Leave "su" checked and make a gscript. In it put:
Code:
reboot -p
for shutdown
don't forget the carriage return at the end.
I've been having the same problem for the past couple of days. The most annoying thing is that unlocking the phone can take several attempts.
I finally had time to try to clean the button. I took the back off and took a small brush and stuck a few bristles down the side of the power button and wiggled them around in an attempt to clean around it, then blew around the button with some air. I used an air compressor but a can of compressed air should work the same. This was 5 minutes ago and, so far, it seems to have fixed my power button problem. Hopefully it was just dirty instead of faulty.
fubaya said:
I've been having the same problem for the past couple of days. The most annoying thing is that unlocking the phone can take several attempts.
I finally had time to try to clean the button. I took the back off and took a small brush and stuck a few bristles down the side of the power button and wiggled them around in an attempt to clean around it, then blew around the button with some air. I used an air compressor but a can of compressed air should work the same. This was 5 minutes ago and, so far, it seems to have fixed my power button problem. Hopefully it was just dirty instead of faulty.
Click to expand...
Click to collapse
Wow. Well, I'll have to give the brush and spray method a shot and see what happens. Thanks for the tip.
fubaya said:
I've been having the same problem for the past couple of days. The most annoying thing is that unlocking the phone can take several attempts.
I finally had time to try to clean the button. I took the back off and took a small brush and stuck a few bristles down the side of the power button and wiggled them around in an attempt to clean around it, then blew around the button with some air. I used an air compressor but a can of compressed air should work the same. This was 5 minutes ago and, so far, it seems to have fixed my power button problem. Hopefully it was just dirty instead of faulty.
Click to expand...
Click to collapse
Where exactly did you stick the brush? I just got this problem :I
I realised this issue when I started using the desire rom port by Paul. I've since then switched to the Froyo build and don't encounter this anymore. Don't know if it was just a coincidence.
I've tried cleaning with a brush and compressed air, but the problem still persists. Grrr...
Amrosorma said:
Where exactly did you stick the brush? I just got this problem :I
Click to expand...
Click to collapse
I took the back off and just stuck a few bristles of the brush down the button hole. If this helps you visualize it, the phone was vertical and so was the brush. The bristles went straight down beside the power button and I wiggled it around a little. I tried to get all four sides of the button, but can't remember if I was successful. I don't know if the brush actually did anything, but it's been working better after brushing and blowing it out.
I have this problem randomly... My way is to hold the power button down the whole time while pushing the shutdown button and the okay when the prompt appears!
I seem to have finally fixed my power button. Basically I just took the battery cover off and then gently pried back the plastic power button toward the rear of the phone until I could see underneath it. Then I carefully shoved a safety pin between the plastic button and the actual electronics beneath it and lightly wiggled it around a bit. I repeated this several times, testing the functionality of the button in between attempts, and eventually got it back to proper working condition. If you're brave enough to attempt this, it might work for you too.

[Solved] Hardware issue with power button

Build date 1007 - in service August 2010.
I've been running Pinnacle 1.2 (been on it since v1.0).
Just moments ago I've found the power button to be unresponsive. This happened after I rebooted into recovery, sticking me there for a while.
I was stuck in a recovery loop- pull batt, reinstall batt, automatic boot back into recovery.
Somewhere in the process of trying different combinations of battery pulls with cable installs and volume up/down holds (trying for download mode) I ended up finally launching the ROM, but w/o a power button all I can do is pull the battery, and the moment I do, the phone automatically wakes w/o even touching the power button (which is totally new to me).
Any input would certainly be appreciated.
My first order of business is to flash to stock (JF6, bootloaders and all if all else failed) but being that it automatically boots when the battery is installed I don't think even a jig would help...or is the beer steering me wrong?
I am confused. You can go back to stock or no?
I cannot get into download mode. The only way to power the phone off is via battery pull.
I cant flash anything from recovery because it says the power button is disabled (it is).
As I put the battery back in the phone boots immediately...I mean the at&t screen lights up my palm before I put the cover on or even flip the phone over.
Use an app from market to enter download mode? system toolbox free is one
Used Odin to go back to stock KF1 and still no power button. Now System Toolbox won't work w/o root/busybox. lol
Once my phone falls asleep I can't wake it back up.
It may seem obvious that the power button is physically broken but I don't know why the phone boots up as soon as the battery is installed...that was never the case before this issue came up.
watsa? Anyone?
Can anyone else shed some light on what would make the phone boot when the battery is inserted (happened at the same time the power button became unresponsive), essentially denying me the opportunity to get to download mode.
beyond this point I am consfused myself. I initially blamed Pinnacle and thought going back to stock might fix it which obviosly didn't happen.. It seems like your power button is always "pushed" so as soon as you pop your battery in phone reboots..
watsa said:
beyond this point I am consfused myself. I initially blamed Pinnacle and thought going back to stock might fix it which obviosly didn't happen.. It seems like your power button is always "pushed" so as soon as you pop your battery in phone reboots..
Click to expand...
Click to collapse
On a second thought if it was the case then power button should have messed up functioning of your phone even after powering on. So I am consfused more. Need a hardware expert here
I'm preparing myself to deal with my beloved phone finally letting me down after all the success we've had...it's just really bad timing as I'm currently unemployed, broke and only 13ish months into a 48 month contract.
Ok, so after a physical tear down it seems to be in the external plastic of the button itself?
After removing the outer case and reinserting the battery I noticed it did not automatically boot up. I pressed the actual power switch/button that is connected to the board and the phone then powered up. I let it finish booting and held the power button down and the power options menu popped up. I clicked Power Off and it shut down fine.
This means it certainly isn't Pinnacle ROM (never thought it was, personally), or software related at all. Now to figure out what is going on between the plastic external power button and the power switch on the board.
Edit: Nothing was there? I blew out the dust reassembled the phone and now it works fine. Weird.

[Q] lock button starts camera after water damage

My baby boy decided to drop my motorola razr i into the toilet. After drying the phone with a cloth, initially the phone seemed fine. After about 20 mins the phone has a couple of problems.
The Lock button (and Volumn Up button) are starting the camera when pressed.
I tried rebooting (by pressing the Lock button + volume down together)....but the problem still exists.
I have tried the 'dry in a bowl of rice'....btw will that still work (its been a couple of days since the toilet incident)
Is it repairable?
thanks
Kashim (in the UK)
Well, the usual rule of thumb for devices dropped in water is to remove the battery as soon as possible to avoid corrosion build up... the voltage present while the battery is still in place accelerates oxidation thanks to the electrolysis effect induced by the introduced water... since this is not possible in our beloved Razri, the least that we can do is to attempt force turn off by pressing Vol+, Vol-, and Pwr keys all at the same time until the phone shuts down...
I know this is coming after the damage, but is good to keep it in mind. this would not remove all voltages inside the phone, but would reduce the areas where oxidation might form... I do not think the 'rice bowl' trick will have any effect after two days, but there's no harm in trying... I would try to open up the device and try to clean as much as possible any trace of liquid intrusion... there might be some internal shortage creating this problem you're experiencing, and might be removable if you manage to open the device...
Good luck!

N7000 power button "fix"

Thought I'd share this with you guys.. it is already mentioned somewhere else in the forum but it's buried in a long thread somewhere, very hard to find.
Recently I started having a problem with my N7000. The power button was not working properly. Only the faintest of touches, would result in the phone turning off. Sometimes, the button didn't work at all. Also, the phone rebooted itself several times a day...
For me anyway, it was simply dust/dirt around the power button.
1) remove back cover, then use a jewelry screwdriver to take out 9 screws. Then unclip the phone from the frame. To unclip the frame, take a look at how it's done in this video: https://www.youtube.com/watch?v=N6CJy71_9Ok (1:52 mark)
2) wipe away the visible dirt/dust, and blow hard around the power button, volume button and usb port...
3) reassemble.
Hopefully, like mine, your N7000's power button is now functioning again. :fingers-crossed:

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