[Q] Phone constantly reboots into charge mode when unplugged - AT&T Samsung Galaxy S II SGH-I777

Hi everyone.
I have had the i777 for quite some time and I have never had problems with this phone until today. My phone will constantly boot into the charge mode (the screen with the battery) and will not boot normally if I press and hold the power button. It will however boot into download mode. I have flashed stock (from entropy's thread) but no luck. In fact, once it rebooted I would have the flash screen (AT&T Stock "rethink possible" bootup animation) reboot. I assume that rebooting into recovery and clearing stuff would do it but I cannot do that. If I do the 3 button sequence, I go straight to download mode. Has anyone had this problem? Any remedies? Is it the device or just the battery?

sshimomichi said:
Hi everyone.
I have had the i777 for quite some time and I have never had problems with this phone until today. My phone will constantly boot into the charge mode (the screen with the battery) and will not boot normally if I press and hold the power button. It will however boot into download mode. I have flashed stock (from entropy's thread) but no luck. In fact, once it rebooted I would have the flash screen (AT&T Stock "rethink possible" bootup animation) reboot. I assume that rebooting into recovery and clearing stuff would do it but I cannot do that. If I do the 3 button sequence, I go straight to download mode. Has anyone had this problem? Any remedies? Is it the device or just the battery?
Click to expand...
Click to collapse
I had this same issue a couple months ago. Sounds like a faulty USB port. I had to warranty exchange my phone. There are multiple threads about this issue. Here is one http://forum.xda-developers.com/showthread.php?t=1498771&highlight=charging Some users claimed they fixed the issue with cleaning the usb port with alcohol swabs

Definitely USB. Mobiletechvideos can put in a new one for $40.
Sent from my SGH-I777 using xda premium

Thank you guys. I'll contact him.

Related

[HELP] Phone shut off and will not boot

Hey guys, haveing a slight panic attack. My phone, running nightly 1/8/2012 CM10 made a weird noise like a frozen boop sound and shut off, when left alone it buzzes like it's starting up and just keeps doing that with no sign of actually booting. I can get into what seems to be Odin, and am currently downloading the stock Odin file from http://forum.xda-developers.com/showthread.php?t=1506330 in hopes that this is a brick that is fixable. If anyone can help me identify what happened, or what I might be able to do if this doesn't work. I would really appreciate it.
EDIT: I can get into ODIN but as soon as it shows the "downloading" screen it shuts off and does the repeated buzzing sound..
Please help if you're able too.
If there is lifesigns you don't have a brick.
Just reflash your rom.
I can't boot into recovery, my only life sign is the Samsung logo at first start-up, then nothing. I can get into ODIN, but when in download mode it stays for about 5 seconds and then reboots infinitely.
Have you tried removing the battery, putting it back in, then try getting into recovery?
Sent from my SAMSUNG-SGH-I717 using xda app-developers app
Stuck power button ?
Stuck volume button ??
Very common problem on gnote ....g
Volume buttons work fine, I can press down to get into download mode, but it does not stay in download mode. it reboots again and loops with no screen indicators. I can't get into recovery at all and the battery pull does nothing.
Stuck power button.....maybe
that would explain the rapid reboot.
does it attempt a reboot after pulling battery, then putting it back in ? without touching buttons ?
If yes, then power button is stuck...g
I had the same problem as you. I was stuck up in the mountains when this happened. Random reboot and then just 2 second buzzing and black screen. I ended up taking it completely apart all board connections and making sure nothing was fried or stuck. put it back together and was able to get it into download mode and reflash via odin. My only issue im having right now is getting it to root and flash recovery and rom. Hope that helps.
You might consider buying a download mode jig shown here
Sent from my SGH-I777 using Tapatalk 2
A USB jig will not work on the galaxy note.
If download mode is gone, the device must be restored using a JTAG service.....g

help please!! i777 won't start and I run out of ideas

I have a rooted i777 with SHOstock rom, I haven't updated the rom for a few months so I'm not sure which version it is.
The phone was working yesterday and it suddenly got stuck so I tried to reboot it (had to take out the battery because the power button didn't respond) but now each time I try to turn it on it is stuck on a black screen with the logo "Samsung Galaxy SII" and won't progress.
I tried to boot to recovery but it shows a screen saying "CWM-based Recovery v6.0.2.7" but it doesn't go pass the screen to show the recovery menu (it just reboots after being stuck on this screen for about a minute).
I tried to boot to download mode and succeeded, but every time I connect the device to my pc, the pc doesn't recognize it
(I tried re-installing kies, but it didn't help and probably the problem is not with the pc drivers because if I connect my wife's unrooted i777 to the pc it does recognize it).
so now I don't have clue what else to try.
any advice will be appreciated.
Make sure you have Odin v1.85 on your Windows PC. Look in the Windows Add/Remove programs dialog (or Uninstall a Program dialog) to see if you have SAMSUNG USB driver for mobile phones.
Open Odin on the desktop. Next put the phone into download mode by holding down vol + and vol - while plugging in the USB cable.
If Odin recognizes your phone, flash back to stock. I would recommend UCMD8 stock firmware, which you can get from the Download Repository.
don't know what happened to it but now it doesn't even turn on.
it's stopped turning on before I had a chance to try what you suggested.
now even if I connect it to the charger it doesn't show the charging status.
is there any other "force something" I can try?
kokoman said:
is there any other "force something" I can try?
Click to expand...
Click to collapse
Remove the battery and leave it out. Connect the USB cable to your PC. While holding down the vol- button (also try it with both vol- and vol+) but not the power button, plug the USB cable into the phone. The computer will provide the power. If this works, your phone will go into download mode. If not... you have very likely had some kind of hardware failure.
unfortunately it didn't work.
can't get it to download mode.
I'll try to leave the battery out for a longer time and try again.
should I try ordering a JTAG usb and see if it puts it in download mode or
probably my only option is to send it to mobiletechvideos?
I had the same problem, Your battery got too low. Pull your battery and leave it out for a while 15 mins or so. Put the battery back in and connect charger. Let the battery charge for a while without trying to turn on phone. The phone will not turn on with a dead battery even if it is connected to charger.
I just solved a problem that I didn't find any help with, so I thought I would post it here in case somebody else needs help out of this situation, and this is a recent and related thread.
After I pulled the battery of my i777 to test in another phone, without remembering to power my phone off first, it would only hang at the Samsung boot logo (stock UCMD8 ROM, rooted, stock recovery). Normally the Samsung boot screen shows for only about five seconds. Pulling the battery wouldn't get it to boot right. Holding Power to force a reboot didn't solve it. After clearing the cache it would move to the AT&T Rethink Possible screen once, then reboot and then again get hung on the Samsung logo screen. Also my battery was heating up a lot as it was hung.
I could get into both download mode and recovery. I tried reflashing my ROM from the stock file in ODIN since that would save all of my data IF it worked. This still didn't get it to boot past the first logo. Finally doing a factory reset on stock recovery is what solved my problem. I had to re-add my account and reload apps from scratch, etc.

[Q] [HELP!] GT - I9100 bricked

Well I was undervolting and underclocking my i9100 for a few months and it would suffer from freezes and stuff like that nothing much as I would be able to perform a hard reset and reboot with my phone completely working everytime that happens. However today, I just locked my phone after taking a picture and I could not unlock it after that. I pressed the power button and home button but the screen would not turn on. So i just took out the battery and tried booting the phone. It was stuck in a bootloop where the boot animation would just keep on playing. So i force shutdown it and booted it into recovery. I had CWM 6.0.4.6 installed and when i booted into recovery, it gave me the message it cannot mount something and cannot load last kmsg and blah. I took no notice and tried to format cache. During this point, the recovery hanged and i force shutdown my phone again. After which, I could never turn on my phone again. No splash screen no nothing. I think it is bricked. And yea btw my usb port is not working anymore and it can only be used for charging. And i was running cm11 infected. Can you all please help me thanks!
so no recovery nor download mode?
Sadly, no
TheImpossibleEnemy said:
so no recovery nor download mode?
Click to expand...
Click to collapse
Yep i cannot even boot into anything no splash screen no nothing pressed the power button for like so long i even removed the battery for 2 hours and popped it back in not working
Try this - take out battery,then press and hold volume down+home+power and put battery back without releasing buttons.This may get you into a download mode where you can flash stock jb via odin.

Infinite battery loop

The phone seems to be stuck in an infinite battery loop.
1) With the battery in, not using the charger.
It first boots into a grey battery for a couple of seconds and then it gets to a green charging battery. I can hear a short vibration, and it boots again into the grey battery and then into the green one. The phone is stuck into that loop until the battery drains.
2) With the battery in and the USB cable plugged in.
The phone boots into the grey battery and then into the green one. It stays there forever. No vibration sound and no rebooting. It keeps charging until hitting the 100% message.
Now, a few days ago I was able to hold the power button down and the phone would reboot normally. I could use the phone for a few hours until, all of a sudden, it would turn off and boot again into the battery loop. Holding the power button and rebooting normally would ONLY work with the USB cable in. If I unplugged the USB cable, the phone would be stuck in the battery loop.
A couple of days ago, I noticed that when I managed to reboot normally and pressed the power button, the phone would ask me if I wanted to restart, and a couple of seconds after that it would reboot into the battery loop.
Now holding the power button down with the USB cable in won't do the trick anymore. It is as if the power button is disabled or something.
Is there a fix for this? If I hold the volume button down I can get to the download mode (Odin Mode). THe info I get is as follows:
Product name: SGH-i777
Custom Binary Download: Yes (1 counts)
Current Binary: Samsung Official
The only way to get out of the download mode is by removing the battery.
Any ideas as to what's going on here?
thanks!
Looks like the culprit is the power button.
I flashed the newest Samsung firmware using Odin in download mode, and I could reboot normally after flashing. I'm using Auto Screen On/Off to wake up the phone, and it does a good job. The Power Off Button apps didn't seem to work, though.
Thing is, if I power off the phone or restart it, it goes into the battery loop again, and the only way to reboot normally that I know is by flashing the stock firmware again.
Is there any easier, faster way to reboot normally with a broken power button?
thanks!
cirerita said:
Is there any easier, faster way to reboot normally with a broken power button?
Click to expand...
Click to collapse
You could try this (it's another power button app https://play.google.com/store/apps/details?id=com.painless.pc). I've used it in the past with great success.
If it doesn't work for you you're currently not rooted - I know your stats show you've downloaded a custom binary, so you shouldn't have any problems.
Post back if you do, and also give us more information regarding which rom you're on.
Thanks, that app is really useful.
I used a custom rom a while ago but then I switched back to stock. I'm using the latest one from Kies (4.1.2, I think to recall). I use Framaroot to root the phone so I can use some apps I like.
Phone still reboots randomly. Maybe I need to clean the cache. Is there an app for doing that while running Android?
Alternatively, is there a kernel/rom that allows me to reboot normally, bypassing the battery loop? The Odin download mode takes too long because I have to flash the stock firmware, and the stock Recovery mode is useless to me because my power button is broken.
IS it possible to access Recovery mode with a broken power button?
thanks!
Sure, but the app I linked allows you to boot to recovery also.
A good custom kernel for a rooted 4.1.2 would be AJK 4.9, the No Swap version I believe. You'd be better off reading the op in the AJK thread.
Thanks, I'll take a good look at the AJK thread. Is it any better than the Siyah kernel?
Problem is, if the phone reboots randomly, then I'm stuck in the battery loop again and I need to flash the stock firmware yet again to be able to reboot normally and bypass the battery loop. I would need some sort of custom boot which I could access pressing the volume button, and which would allow me to reboot bypassing the battery loop.
SteveMurphy said:
Sure, but the app I linked allows you to boot to recovery also.
A good custom kernel for a rooted 4.1.2 would be AJK 4.9, the No Swap version I believe. You'd be better off reading the op in the AJK thread.
Click to expand...
Click to collapse
Just flashed AJK 4.9 and no more random rebootings as of now... Plus, if I reboot manually, it does not get into the dreaded battery loop. So far so good. Thanks a lot for the tip.
cirerita said:
Thanks, I'll take a good look at the AJK thread. Is it any better than the Siyah kernel?
Problem is, if the phone reboots randomly, then I'm stuck in the battery loop again and I need to flash the stock firmware yet again to be able to reboot normally and bypass the battery loop. I would need some sort of custom boot which I could access pressing the volume button, and which would allow me to reboot bypassing the battery loop.
Click to expand...
Click to collapse
AJK's Kernel is based off Siyah.

[Q] Bricked phone - Boot loop - Recovery & Download mode not working [HELP]

Hello guys,
I've got a big problem with my I9300 and therefore I would like to ask here for any help. (If I'm in the wrong section, please move the thread to a correct one)
I had installed the Resurrection Remix ROM, v5.2.6. from 30.12.2014 and Googy-Max 2 recovery (CWM based) on my phone. I was using it for days and all worked fine.
One day I turned the phone off and I wanted to restart it. But it never restarted again; it ends up in a boot loop. It shows me the white Samsung Boot-Logo for some seconds, then a total black screen and the same thing repeats in a loop.
So I wanted to get into the recovery for wiping etc. but I couldn’t access the recovery. Nothing happens by pressing the relevant buttons. The device is still hanging in the boot loop. So I wanted to flash via Odin, but this isn't possible. I also can't go into the download mode. After pressing the relevant buttons, the green warning screen appears, which asks me if I really want to go to the download mode. But when I press volume up for "continue" or even if I don't press anything, the phone turns off and the boot loop with the white Samsung Logo starts again.
Therefore I ordered a USB JIG for forcing the device to go into download mode. When I plug the USB JIG in, the device actually goes into download mode but this status holds on only for a few seconds. After accessing download mode through the JIG, after a few seconds the phone turns off, restarts, (and because the JIG is still plugged in) the download mode appears again and it ends in a loop.
At first I thought maybe the power button is sticking and therefore the device turns on and off autonomous. But definitively I can negate it, because I opened the phone and removed the power button and nothing changed. Also by pressing the power button on the mainboard I can clearly hear the "click".
So I started a new attempt. Although the time, in which the device stays in download mode before turning off, is very short (only a few seconds), I tried flashing an other recovery, namely TWRP v2.8.3.0. So I prepared ODIN, plugged the JIG into the device, by appearing the download mode I switched cables and an other person clicked start at ODIN and it worked. So now TWRP is installed. Now I also can't get into recovery but after flashing TWRP there exist two little differences. First, after pressing the relevant buttons, TWRP appears for less than 1 second until the phone turns off. Secondly, when I plug the device in for charging, the Samsung charging logo appears for some seconds, then for less than 1 second appears a charging logo from Lollipop and the device ends up in a loop by displaying alternately the two different charging logos. Before flashing TWRP, the device booted in a boot loop (as I wrote above) by plugging it in for charging.
So the main question: how can I get my device work again
I tried telling you all details so that you have a better view of the problem.
Maybe I should flash a fully (stock) rom, but as I told you the download mode appears only for a few seconds. Flashing a recovery was possible, because the recovery file is very small - 7 MB. A full rom is much bigger and I think by flashing a complete rom, the device would turn off while Odin is flashing, therefore I ask first here for any assistance.
Thank you very much in advance!
beginnerteur said:
Hello guys,
I've got a big problem with my I9300 and therefore I would like to ask here for any help. (If I'm in the wrong section, please move the thread to a correct one)
I had installed the Resurrection Remix ROM, v5.2.6. from 30.12.2014 and Googy-Max 2 recovery (CWM based) on my phone. I was using it for days and all worked fine.
One day I turned the phone off and I wanted to restart it. But it never restarted again; it ends up in a boot loop. It shows me the white Samsung Boot-Logo for some seconds, then a total black screen and the same thing repeats in a loop.
So I wanted to get into the recovery for wiping etc. but I couldn’t access the recovery. Nothing happens by pressing the relevant buttons. The device is still hanging in the boot loop. So I wanted to flash via Odin, but this isn't possible. I also can't go into the download mode. After pressing the relevant buttons, the green warning screen appears, which asks me if I really want to go to the download mode. But when I press volume up for "continue" or even if I don't press anything, the phone turns off and the boot loop with the white Samsung Logo starts again.
Therefore I ordered a USB JIG for forcing the device to go into download mode. When I plug the USB JIG in, the device actually goes into download mode but this status holds on only for a few seconds. After accessing download mode through the JIG, after a few seconds the phone turns off, restarts, (and because the JIG is still plugged in) the download mode appears again and it ends in a loop.
At first I thought maybe the power button is sticking and therefore the device turns on and off autonomous. But definitively I can negate it, because I opened the phone and removed the power button and nothing changed. Also by pressing the power button on the mainboard I can clearly hear the "click".
So I started a new attempt. Although the time, in which the device stays in download mode before turning off, is very short (only a few seconds), I tried flashing an other recovery, namely TWRP v2.8.3.0. So I prepared ODIN, plugged the JIG into the device, by appearing the download mode I switched cables and an other person clicked start at ODIN and it worked. So now TWRP is installed. Now I also can't get into recovery but after flashing TWRP there exist two little differences. First, after pressing the relevant buttons, TWRP appears for less than 1 second until the phone turns off. Secondly, when I plug the device in for charging, the Samsung charging logo appears for some seconds, then for less than 1 second appears a charging logo from Lollipop and the device ends up in a loop by displaying alternately the two different charging logos. Before flashing TWRP, the device booted in a boot loop (as I wrote above) by plugging it in for charging.
So the main question: how can I get my device work again
I tried telling you all details so that you have a better view of the problem.
Maybe I should flash a fully (stock) rom, but as I told you the download mode appears only for a few seconds. Flashing a recovery was possible, because the recovery file is very small - 7 MB. A full rom is much bigger and I think by flashing a complete rom, the device would turn off while Odin is flashing, therefore I ask first here for any assistance.
Thank you very much in advance!
Click to expand...
Click to collapse
Check and make sure that your volume buttons and home button are not stuck also. If they are not, I would suggest a visit to a repair shop as your EMMC chip might be weak already.
beginnerteur said:
Hello guys,
I've got a big problem with my I9300 and therefore I would like to ask here for any help. (If I'm in the wrong section, please move the thread to a correct one)
I had installed the Resurrection Remix ROM, v5.2.6. from 30.12.2014 and Googy-Max 2 recovery (CWM based) on my phone. I was using it for days and all worked fine.
One day I turned the phone off and I wanted to restart it. But it never restarted again; it ends up in a boot loop. It shows me the white Samsung Boot-Logo for some seconds, then a total black screen and the same thing repeats in a loop.
So I wanted to get into the recovery for wiping etc. but I couldn’t access the recovery. Nothing happens by pressing the relevant buttons. The device is still hanging in the boot loop. So I wanted to flash via Odin, but this isn't possible. I also can't go into the download mode. After pressing the relevant buttons, the green warning screen appears, which asks me if I really want to go to the download mode. But when I press volume up for "continue" or even if I don't press anything, the phone turns off and the boot loop with the white Samsung Logo starts again.
Therefore I ordered a USB JIG for forcing the device to go into download mode. When I plug the USB JIG in, the device actually goes into download mode but this status holds on only for a few seconds. After accessing download mode through the JIG, after a few seconds the phone turns off, restarts, (and because the JIG is still plugged in) the download mode appears again and it ends in a loop.
At first I thought maybe the power button is sticking and therefore the device turns on and off autonomous. But definitively I can negate it, because I opened the phone and removed the power button and nothing changed. Also by pressing the power button on the mainboard I can clearly hear the "click".
So I started a new attempt. Although the time, in which the device stays in download mode before turning off, is very short (only a few seconds), I tried flashing an other recovery, namely TWRP v2.8.3.0. So I prepared ODIN, plugged the JIG into the device, by appearing the download mode I switched cables and an other person clicked start at ODIN and it worked. So now TWRP is installed. Now I also can't get into recovery but after flashing TWRP there exist two little differences. First, after pressing the relevant buttons, TWRP appears for less than 1 second until the phone turns off. Secondly, when I plug the device in for charging, the Samsung charging logo appears for some seconds, then for less than 1 second appears a charging logo from Lollipop and the device ends up in a loop by displaying alternately the two different charging logos. Before flashing TWRP, the device booted in a boot loop (as I wrote above) by plugging it in for charging.
So the main question: how can I get my device work again
I tried telling you all details so that you have a better view of the problem.
Maybe I should flash a fully (stock) rom, but as I told you the download mode appears only for a few seconds. Flashing a recovery was possible, because the recovery file is very small - 7 MB. A full rom is much bigger and I think by flashing a complete rom, the device would turn off while Odin is flashing, therefore I ask first here for any assistance.
Thank you very much in advance!
Click to expand...
Click to collapse
Your power button is failing, stuck in 'pressed' position. Try pressing repeatedly power button for several seconds, then release it completely. It shall bring it back to life. Visit your local service, or prepare tin, heat gun and soldering pistol. One button cost $0.2, they are selling them on eBay in sets of three (and 10, and 100....).
Happened to me some time ago, and video on youtube helped me to dismantle my phone, pull broken button out of it, and change it for new.
My phone was cycling like yours.
beginnerteur said:
Hello guys,
I've got a big problem with my I9300 and therefore I would like to ask here for any help. (If I'm in the wrong section, please move the thread to a correct one)
I had installed the Resurrection Remix ROM, v5.2.6. from 30.12.2014 and Googy-Max 2 recovery (CWM based) on my phone. I was using it for days and all worked fine.
One day I turned the phone off and I wanted to restart it. But it never restarted again; it ends up in a boot loop. It shows me the white Samsung Boot-Logo for some seconds, then a total black screen and the same thing repeats in a loop.
So I wanted to get into the recovery for wiping etc. but I couldn’t access the recovery. Nothing happens by pressing the relevant buttons. The device is still hanging in the boot loop. So I wanted to flash via Odin, but this isn't possible. I also can't go into the download mode. After pressing the relevant buttons, the green warning screen appears, which asks me if I really want to go to the download mode. But when I press volume up for "continue" or even if I don't press anything, the phone turns off and the boot loop with the white Samsung Logo starts again.
Therefore I ordered a USB JIG for forcing the device to go into download mode. When I plug the USB JIG in, the device actually goes into download mode but this status holds on only for a few seconds. After accessing download mode through the JIG, after a few seconds the phone turns off, restarts, (and because the JIG is still plugged in) the download mode appears again and it ends in a loop.
At first I thought maybe the power button is sticking and therefore the device turns on and off autonomous. But definitively I can negate it, because I opened the phone and removed the power button and nothing changed. Also by pressing the power button on the mainboard I can clearly hear the "click".
So I started a new attempt. Although the time, in which the device stays in download mode before turning off, is very short (only a few seconds), I tried flashing an other recovery, namely TWRP v2.8.3.0. So I prepared ODIN, plugged the JIG into the device, by appearing the download mode I switched cables and an other person clicked start at ODIN and it worked. So now TWRP is installed. Now I also can't get into recovery but after flashing TWRP there exist two little differences. First, after pressing the relevant buttons, TWRP appears for less than 1 second until the phone turns off. Secondly, when I plug the device in for charging, the Samsung charging logo appears for some seconds, then for less than 1 second appears a charging logo from Lollipop and the device ends up in a loop by displaying alternately the two different charging logos. Before flashing TWRP, the device booted in a boot loop (as I wrote above) by plugging it in for charging.
So the main question: how can I get my device work again
I tried telling you all details so that you have a better view of the problem.
Maybe I should flash a fully (stock) rom, but as I told you the download mode appears only for a few seconds. Flashing a recovery was possible, because the recovery file is very small - 7 MB. A full rom is much bigger and I think by flashing a complete rom, the device would turn off while Odin is flashing, therefore I ask first here for any assistance.
Thank you very much in advance!
Click to expand...
Click to collapse
As said your emmc chip maybe failing.
The dead boot thread maybe of interest to you.
Virnik0 said:
Your power button is failing, stuck in 'pressed' position. Try pressing repeatedly power button for several seconds, then release it completely. It shall bring it back to life. Visit your local service, or prepare tin, heat gun and soldering pistol. One button cost $0.2, they are selling them on eBay in sets of three (and 10, and 100....).
Happened to me some time ago, and video on youtube helped me to dismantle my phone, pull broken button out of it, and change it for new.
My phone was cycling like yours.
Click to expand...
Click to collapse
He said he has tested this and can also hear the micro-switch clicking.
scorpionhd2 said:
Check and make sure that your volume buttons and home button are not stuck also. If they are not, I would suggest a visit to a repair shop as your EMMC chip might be weak already.
Click to expand...
Click to collapse
Virnik0 said:
Your power button is failing, stuck in 'pressed' position. Try pressing repeatedly power button for several seconds, then release it completely. It shall bring it back to life. Visit your local service, or prepare tin, heat gun and soldering pistol. One button cost $0.2, they are selling them on eBay in sets of three (and 10, and 100....).
Happened to me some time ago, and video on youtube helped me to dismantle my phone, pull broken button out of it, and change it for new.
My phone was cycling like yours.
Click to expand...
Click to collapse
Darke5tShad0w said:
As said your emmc chip maybe failing.
The dead boot thread maybe of interest to you.
He said he has tested this and can also hear the micro-switch clicking.
Click to expand...
Click to collapse
Thank you very much for helping! :good:
So the question is, whether it's the power button's or emmc's fault...
I did a little searching and found this video. I've got exactly the same problem like the guy. At 1:06 following the boot loop, at 1:34 following the problem with downlod mode.
Although he thinks it's caused to the sudden death problem, but at least in my case I think it's wrong because months ago I did the eMMC Brickbug Check.
Also I noticed a probably important detail. When I put the battery in the phone, it automatically turns on without pressing the power button like in 1:04-1:09 in the video. Which normal working phone turns itself on by simply putting in the battery...?
So it must get a command for turning on - (possibly through a defect power button?)
@Virnik0, do you remember, if you could hear the micro-switch clicking on your phone before replacing the button on the mainboard?
beginnerteur said:
Also I noticed a probably important detail. When I put the battery in the phone, it automatically turns on without pressing the power button
Click to expand...
Click to collapse
Your power button is faulty, replace it before you try fixing anything else.
Thank you very, very much for helping! :good: :good: :good:
Truly the power button was fault although you could hear clearly the "click".
I unsoldered and removed the power module and (by startig with JIG and rebooting via ADB) the phone works as it should. :victory:
Now I'm trying to solder a new power button......it's a bit tricky
Again, thank you very much guys!
I had the same problem, pressed the button many times, and it helped. Thank you for your suggestions

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