Database Develop

[Q] [Help Thread] Nook HD not booting at all

I recently went on a 3 month trip. Before I left, my nook was working perfectly fine, when i got back, it didn't work at all. It's not dead because i left it plugged in overnight but it still didn't turn on. when i plug it in the LED goes from orange to green and then off (or green to orange, i can't remember). The screen doesn't turn on at all. I can't get to recovery either.
This is a Nook HD, I believe it had CM11.
:crying:
Can this be fixed
or should i plan it's funeral

Same here
The same has happened to me. Screen doesn't turn on, but there is power, I can play it into my laptop and something is there, just not enough.
Good excuse for a new tablet!

It can be fixed. I've done it before. It has to do with the fstrim not being compatible with certain hardware versions of our device. If I can remember how I fixed it, I'll post it here. Trying to fix mine (again).

tambourineman86 said:
It can be fixed. I've done it before. It has to do with the fstrim not being compatible with certain hardware versions of our device. If I can remember how I fixed it, I'll post it here. Trying to fix mine (again).
Click to expand...
Click to collapse
If would be fab if you could fix. Seems to be a common issue

I was able to fix it. YMMV.
1) Make sure the Nook is completely off and unplugged
2) Take out your sdcard
3) Hold down power button until the "battery depleted" icon shows, then promptly plug in the power before the icon disappears.
4) Let it set. The screen will go black, then it will attempt to boot and get stuck on the faint black screen, but this time, the charging light should stay amber.
If you want to be safe, wait until the device reboots itself. That could take hours though. If you're plugged into the wall wait at least 30 - 45 minutes before holding the power button down til it shuts down and then rebooting it (with the sdcard inserted).
Good luck, I hope it works for you.
EDIT: Also, I've read this may also have to do with wifi sending the device into some sort of strange bootloop when the screen is off. I personally believe it has more to do with the fstrim of JB but perhaps changing the wifi sleep policy may prevent this issue from happening again. I'm skeptical, but figured I'd pass that info along if anyone wants to try it as well.

tambourineman86 said:
I was able to fix it. YMMV.
1) Make sure the Nook is completely off and unplugged
2) Take out your sdcard
3) Hold down power button until the "battery depleted" icon shows, then promptly plug in the power before the icon disappears.
4) Let it set. The screen will go black, then it will attempt to boot and get stuck on the faint black screen, but this time, the charging light should stay amber.
If you want to be safe, wait until the device reboots itself. That could take hours though. If you're plugged into the wall wait at least 30 - 45 minutes before holding the power button down til it shuts down and then rebooting it (with the sdcard inserted).
Good luck, I hope it works for you.
EDIT: Also, I've read this may also have to do with wifi sending the device into some sort of strange bootloop when the screen is off. I personally believe it has more to do with the fstrim of JB but perhaps changing the wifi sleep policy may prevent this issue from happening again. I'm skeptical, but figured I'd pass that info along if anyone wants to try it as well.
Click to expand...
Click to collapse
Not sure we have the same problem. My screen doesn't come on at all, I don't get a battery depleted icon, no matter how long I hold in the power button. The only sign of life I get is when it's plugged in, when it goes from orange to green after about 10 seconds.
Thanks for the help, but I think it's a lost cause.

YMMV. But mine was the same issue. You should be able to get the icon by holding the power button down for 5 or 6 seconds. I'd say just eff with it until that icon appears. Try different button combinations. I used power and home trying to get the icon to show.

developerbuzz said:
when it goes from orange to green after about 10 seconds.
Thanks for the help, but I think it's a lost cause.
Click to expand...
Click to collapse
Anyway... since people are continually running into this kind of issue...
Give or take 21 seconds after turning orange it turns green during actual boot cycle into rom
Give or take 10 seconds after turning orange is cwm internal recovery.
After about 10 seconds the charging screen image disappears.
The charging screen image once finally no longer may not show up again until full power off/on (holding power button > 10 seconds or full battery discharge). Unplugging and plugging back in does nothing except making the device look bricked if there's too much light shining on it.
Device may not automatically leave the above state under a specific situation(s). May still need manual full power off/on.
Guessing 10 seconds could also be something else during the early/late boot process or other. The light changing color though should indicate that something is indeed happening.
Light should stay green during the boot process if its completely and fully no questions asked 100%. If you go based on that than yours doesn't appear to be completely fully charged which should either mean its turning on and using battery or not charging correctly.
The light turning off is curious. The device could be shutting off. If light comes back on a moment later then the device has rebooted. if the light stays off = n/a.
If its booting into recovery then the device would be available via adb. At that point it could be further evaluated.
On the off chance the screen was damaged it should boot and usb should be available via computer as well as adb.
If not then its probably toast unless its simply not getting a good enough current causing mislead battery stats and/or not enough energy to get to charging screen (bad wall power adapter in use, damaged power cable - though could be bad battery, defect, damage or whatever). OR there's some major error on behalf of the user happening (think should have tried that in the morning not while 1/2 asleep or came home from long trip and forget how that works).
Maybe the only other things are the emmc brick bug, was left sitting in the sun or heat or ocean air or other physical damage/defect even to the power port as well.
Or maybe it was mad that you left it. Shouldn't have hurt its feelings you know. At least its not crying battery acid on you.
That should just about cover everything except for the things not mentioned. Since its your device, you decide what happened.
Its complicated so anyone see any improvements, clarifications, or mistakes? Please put it in a post.

Jsorren said:
when i plug it in the LED goes from orange to green and then off (or green to orange, i can't remember). The screen doesn't turn on at all.
Click to expand...
Click to collapse
Bumping this thread to make it aware that there is a real answer. I have been able to duplicate this problem and rather easily too.
The problem is indeed from bad power. The device isn't receiving the correct amount of power needed to charge and start from a fully discharged battery.
To safely* duplicate this you can use a usb extension that isn't fully connected to the nook power cable. You may need to fully connect it first then slowly disconnect/connect till the light turns green when it should actually be charging. It won't actually charge in this state, or if it is, its very little and the battery percentage will continue to drop.
Leave the cable as is and unplugged. After the tablet is fully discharged, connect the usb cable. The light will change through the modes and turn off. The device will not turn on.
There are probably other ways to cause the problem like for instance a portable usb battery that doesn't put out enough juice (not the orange kind). Etc.
* It didn't hurt mine, but not my fault if it breaks your device.

sandsofmyst said:
Bumping this thread to make it aware that there is a real answer. I have been able to duplicate this problem and rather easily too.
The problem is indeed from bad power. The device isn't receiving the correct amount of power needed to charge and start from a fully discharged battery.
To safely* duplicate this you can use a usb extension that isn't fully connected to the nook power cable. You may need to fully connect it first then slowly disconnect/connect till the light turns green when it should actually be charging. It won't actually charge in this state, or if it is, its very little and the battery percentage will continue to drop.
Leave the cable as is and unplugged. After the tablet is fully discharged, connect the usb cable. The light will change through the modes and turn off. The device will not turn on.
There are probably other ways to cause the problem like for instance a portable usb battery that doesn't put out enough juice (not the orange kind). Etc.
* It didn't hurt mine, but not my fault if it breaks your device.
Click to expand...
Click to collapse
I actually ended up fixing it yesterday!! I haven't touched it in about 3 months, and I was planning on just throwing it out getting rid of it some how. For the heck of it, I decided to plug it in, assuming that it was gonna go through the same process. But this time it went from green to amber, but it never went off. So I pressed the power button and the battery icon appeared. This was a really good sign. So I left plugged in for about 5 to 10 minutes then tried to power on.:fingers-crossed: As soon as I saw that '' Nook" boot up screen, my heart stopped. It booted up perfectly and I almost blew up from excitement :victory:. So I then flashed the stock firmware back onto it, so this would never happen again.
I guess the battery had to be completely depleted or just had to cool down. Idk but either way this was one heck of a miracle
So I recommend for anyone having this problem to just leave it off and don't mess with it. I wouldn't say for 3 months like I did but maybe test it each week or wait a month if you have good patience

Wow. Man, that's awesome! Glad you posted that update on it. Thought if you had posted an update it would be the opposite as in trashed it
Actually, I guess only you could answer if you had also moved/unplugged the power cable from the wall adapter or put it into a different wall adapter, etc. Thinking there could have been a difference there.
These modern day devices are so finicky, guess anything is possible. Like you say, maybe sitting without power is another answer.

From some experimentation I have etermined that your power adapter (that plugs into the outlet) is the issue. It does not like to be leaft plugged in indefinately. It will continually use power even when the nook is not plugged in.
Also, if you use a differnt adapter you will have the same problem unless it is also of the exact same voltage and amps.

Phone suddenly died/ hard bricked.

The phone (C5303 - Stock ROM - Locked BL - No Root) was working normally. The last time I checked, it had 60% battery.
The phone suddenly stopped working.
I tried to turn on the phone. Nothing Happened.
I tried to hard reset. Nothing Happened.
I even tried to charge the phone... Even the red illumination light was not working!! Hence, nothing happened at all.
I couldn't find a solution to this...Please help!! :crying: :crying:

karan11000 said:
The phone (C5303 - Stock ROM - Locked BL - No Root) was working normally. The last time I checked, it had 60% battery.
The phone suddenly stopped working.
I tried to turn on the phone. Nothing Happened.
I tried to hard reset. Nothing Happened.
I even tried to charge the phone... Even the red illumination light was not working!! Hence, nothing happened at all.
I couldn't find a solution to this...Please help!! :crying: :crying:
Click to expand...
Click to collapse
I would suggest for you to first, hold the off button under the battery cover for about 20 seconds. This might stimulate "battery removal" on the SP. Afterwards, try plugging in the wall charger and see if the device react.

TechnoSparks said:
I would suggest for you to first, hold the off button under the battery cover for about 20 seconds. This might stimulate "battery removal" on the SP. Afterwards, try plugging in the wall charger and see if the device react.
Click to expand...
Click to collapse
I tried doing that.
Still nothing happened!!
:crying:

Let it charge using a wall socket for atleast 12 hours!

Gamm86 said:
Let it charge using a wall socket for atleast 12 hours!
Click to expand...
Click to collapse
Did that. Still no change.
No red LED light, no vibration, even the screen is not on.

If pressing the yellow button on the back for 10 seconds doesn't work after charging it for 12 hours, you either have a faulty charger or a dead phone. (hardware failure)
Last chance would be to use a different charger. If that doesn't work, you will have to return your phone and file a warranty claim if you have NOT unlocked your bootloader nor rooted it.
Should you have rooted or unlocked your phone then I can only suggest visiting this link: http://tinyurl.com/n35lsjn

Gamm86 said:
If pressing the yellow button on the back for 10 seconds doesn't work after charging it for 12 hours, you either have a faulty charger or a dead phone. (hardware failure)
Last chance would be to use a different charger. If that doesn't work, you will have to return your phone and file a warranty claim if you have NOT unlocked your bootloader nor rooted it.
Should you have rooted or unlocked your phone then I can only suggest visiting this link: http://tinyurl.com/n35lsjn
Click to expand...
Click to collapse
Well, it's definitely not rooted or unlocked. And it's warranty has been expired (more than 1 year old).
I guess I'll go the Sony service center or else, the championship!!
Thanks for the support anyways!! :good:

Hi,
Couple of days ago same happened to me.
I just took phone to hand and realized that its completely dead. Just like this, without a reason. No vibrations, led blinks, no reaction for any button combinations, plug-in charger and so on.
After a long time of fighting, reading forums, youtube clips etc. something started to change and prevented me to buy another phone.
First symptom was that in time where power button is pressed the red light had blinked two times shortly and then again and again. When button had been released again nothing.
Then I've been trying to connect phone to PC in flashmode. It has failed but I've observed that right after usb connector is plugged, windows knows that something has been connected ( "USB device connected" sound) but 2 -3 seconds later
disconnected ("USB device disconnected sound"). In this moment PC companion even was able to complete step "connect the device" but right after that it returned error (disconnect device, connect again and try again).
Then I connected phone to wall charger again. Now, when I do this, in first moment i see short blink of red light and immediately after this it starts to shine constantly for a couple of minutes. After that red light goes out for another couple of minutes and whole sequence repeats again and again in loop (short red light -> long red light-> no light).
I've red somewhere that constant red light means that phone battery has not enough power even to run charging mode via kernel (not enough power to run kernel). The suggestion is to be patient and charge the phone via wall charger for 15 or 20 hours, what currently happens. I'm still waiting for miracle. I could buy new battery but I wouldn't like to do this for nothing.
If you have any suggestions or advices/confirmation what the red light sequence means please feel free to comment @karan please share with us the result of service intervention and root cause of issue if possible. Thx in advance.
ps. additionally I've discovered that usb cable which I used is broken. different phone connected via this cable to pc is not recognized (nothing happens) but under another cable it does normally. It might be the reason of problems but I have no Idea if it could result the battery dead.

Hi,
Anyone knows if phone should work without battery? I've seen such information on polish android forum however when I unplugged the battery and plugged charger nothing happened. Only one short red blink and then nothing. If phone should work in such state it means that my problem is not related to battery.

[Q] HTC One Charges but Won't Turn On

Hello guys,
A while ago, I was just doing stuff I normally do with my phone. I flashed a ROM and it rebooted normally. I then flashed a MOD using TWRP recovery. As usual, every MOD that uses Aroma Installer has a "Reboot device after install" option so I chose that and then **** happened.
Out of nowhere my One suddenly shuts off (The install was done so...)
I have tried the sensor under bright light trick and my phone does vibrate once but nothing actually happens. Just a black screen and stuff.
Sometimes it does go into this screen where it shows a battery icon with thunder bolt in the middle (Yes I know that is the charging screen. But, I also believe that it acts like a progress bar and it does not do THAT.)
Then again, it dies and it doesn't have the charging LED nor would it turn on.
Help is appreciated. I know basic and complicated android stuff but I can't do any of that if my phone is dead
Edit: When I press the power button for a few seconds, it vibrates but nothing happens. The screen is still off and the charging LED is not turning on as well.
Edit: Okay, when I do get it to charge, it shows that charging screen and when I unplug it, it freezes with the charge light on. The phone is also heating up so that does mean it's charging
Regards,
TAM

Sent from my HTC One using XDA Free mobile app

The Android Manual said:
Hello guys,
A while ago, I was just doing stuff I normally do with my phone. I flashed a ROM and it rebooted normally. I then flashed a MOD using TWRP recovery. As usual, every MOD that uses Aroma Installer has a "Reboot device after install" option so I chose that and then **** happened.
Out of nowhere my One suddenly shuts off (The install was done so...)
I have tried the sensor under bright light trick and my phone does vibrate once but nothing actually happens. Just a black screen and stuff.
Sometimes it does go into this screen where it shows a battery icon with thunder bolt in the middle (Yes I know that is the charging screen. But, I also believe that it acts like a progress bar and it does not do THAT.)
Then again, it dies and it doesn't have the charging LED nor would it turn on.
Help is appreciated. I know basic and complicated android stuff but I can't do any of that if my phone is dead [emoji14]
Edit: When I press the power button for a few seconds, it vibrates but nothing happens. The screen is still off and the charging LED is not turning on as well.
Edit: Okay, when I do get it to charge, it shows that charging screen and when I unplug it, it freezes with the charge light on. The phone is also heating up so that does mean it's charging
Regards,
TAM
Click to expand...
Click to collapse
Does it show up in Device Manger on your PC at all?

Danny201281 said:
Does it show up in Device Manger on your PC at all?
Click to expand...
Click to collapse
No. But I was able to drain the battery and once I plug it in using the original HTC wall charger (which is the one that I always use to charge it.) it charged but the charging LED is blinking (mut have drained it self good overnight) am I making progress or did I make it worse?

The Android Manual said:
No. But I was able to drain the battery and once I plug it in using the original HTC wall charger (which is the one that I always use to charge it.) it charged but the charging LED is blinking (mut have drained it self good overnight) am I making progress or did I make it worse?
Click to expand...
Click to collapse
It's difficult to say at this point, Personally I would just leave it charge over night. Then try and power it on with Volume Down+Power while still connected to the charger. And it definatly doesn't show up in device manager, not even as Unknown Device or QHUSB_DLOAD? I find that a little odd.
But there are signs of life so I think a good charge may do the trick.

Danny201281 said:
It's difficult to say at this point, Personally I would just leave it charge over night. Then try and power it on with Volume Down+Power while still connected to the charger. And it definatly doesn't show up in device manager, not even as Unknown Device or QHUSB_DLOAD? I find that a little odd.
But there are signs of life so I think a good charge may do the trick.
Click to expand...
Click to collapse
Yes. I did plug it into my laptop's usb ports last night when it still had charge (usb 3.0 if that helps) but it was neither recognized nor visible in the device manager. I hope! I am now charging my phone as we speak. I hope it's not dead too

Okay so...I installed HTC Sync and still nothing. It was not recognized and it's still not booting

Try Windows 7 USB 2.0
just htc Drivers
Try to go to Boot loader and flash firmware
if it show battery with charging sign it means Soft Brick or battery problem
if it showed nothing like no charging light or nothing on screen then its Hard Brick

yatindroid said:
Try Windows 7 USB 2.0
just htc Drivers
Try to go to Boot loader and flash firmware
if it show battery with charging sign it means Soft Brick or battery problem
if it showed nothing like no charging light or nothing on screen then its Hard Brick
Click to expand...
Click to collapse
Then it is probably a soft brick or a battery problem. Because when I got home I immidiately pluged it into the wall charger for it to charge and it charged showing the charging screen with a blinking LED. One more thing, if I press the power button for a few seconds it vibrates and then nothing happens. I am planning to leave it charging over night. Is that a good idea?

The Android Manual said:
Then it is probably a soft brick or a battery problem. Because when I got home I immidiately pluged it into the wall charger for it to charge and it charged showing the charging screen with a blinking LED. One more thing, if I press the power button for a few seconds it vibrates and then nothing happens. I am planning to leave it charging over night. Is that a good idea?
Click to expand...
Click to collapse
can I ask what your flashed before it did this ?
also crazy question, but have you tried holding down the power button till the lights on the bottom flash approx. 12-15 times ? this resets the device, Ive had to do this after many flashes of various things.

Seanie280672 said:
can I ask what your flashed before it did this ?
also crazy question, but have you tried holding down the power button till the lights on the bottom flash approx. 12-15 times ? this resets the device, Ive had to do this after many flashes of various things.
Click to expand...
Click to collapse
I was flashing a MOD then after the installation finished, it asked if I wanted to "reboot now" so I tapped yes then the phone died and it won't start anymore. Yeah but how long should I hold the button? Just to clarify, my phone only vibrates if I hold the power button for a long time. It just keeps vibrating and vibrating

The Android Manual said:
I was flashing a MOD then after the installation finished, it asked if I wanted to "reboot now" so I tapped yes then the phone died and it won't start anymore. Yeah but how long should I hold the button?
Click to expand...
Click to collapse
until the lights stop flashing, usually about 12 or 15 times cant quite remember exactly how many times they flash but its quite a few.
I know you said you tried the bright light trick, but you should also try this trick whilst holding down the power button.

Seanie280672 said:
until the lights stop flashing, usually about 12 or 15 times cant quite remember exactly how many times they flash but its quite a few.
I know you said you tried the bright light trick, but you should also try this trick whilst holding down the power button.
Click to expand...
Click to collapse
Umm...but the buttons don't light up when I press the power button for a long time.

It does this but when I unplug it, it freezes like that with the LED on.

Edit: When I plug it in the computer it doesn't show up (I think that's good because it's a sign telling me that maybe the phone just needs a long ass charge). Now I will be leaving my phone to charge over night and hope that it will boot up in the morning. The phone becomes hot too while it's charging.
Note: I also do not have access to RECOVERY, BOOTLOADER and FASTBOOT.

The Android Manual said:
Edit: When I plug it in the computer it doesn't show up (I think that's good because it's a sign telling me that maybe the phone just needs a long ass charge). Now I will be leaving my phone to charge over night and hope that it will boot up in the morning. The phone becomes hot too while it's charging.
Note: I also do not have access to RECOVERY, BOOTLOADER and FASTBOOT.
Click to expand...
Click to collapse
if your phone is in warranty you should go to service centre
This situation is quite confusing
as not accessing bootloader is not good sign

yatindroid said:
if your phone is in warranty you should go to service centre
This situation is quite confusing
as not accessing bootloader is not good sign
Click to expand...
Click to collapse
Oh no...well I will try to search for my old laptop that has USB 2.0 ports and see of that recognizes my phone. I also do not have warranty anymore though so that is not going to help me

yatindroid said:
if your phone is in warranty you should go to service centre
This situation is quite confusing
as not accessing bootloader is not good sign
Click to expand...
Click to collapse
Okay so I plugged my phone into a laptop with USB 2.0 ports and it showed up in device manager as an "Unknown device". Not sure if it was caused by the phone showing the battery charging screen but anyway that happened. Is that a sign of life? What should I do about it?

The Android Manual said:
Okay so I plugged my phone into a laptop with USB 2.0 ports and it showed up in device manager as an "Unknown device". Not sure if it was caused by the phone showing the battery charging screen but anyway that happened. Is that a sign of life? What should I do about it?
Click to expand...
Click to collapse
Well as you have tried everything else, and now seeing some signs of life, you could give this a try, no harm in trying, it will either work or it wont.
sorry wrong link, this: http://forum.xda-developers.com/showthread.php?t=2770684

Seanie280672 said:
Well as you have tried everything else, and now seeing some signs of life, you could give this a try, no harm in trying, it will either work or it wont.
sorry wrong link, this: http://forum.xda-developers.com/showthread.php?t=2770684
Click to expand...
Click to collapse
What version of ubuntu do you recommend I use? I will be installing it on my flash drive so...

XSP won't charge or boot

Hi
I am stuck with a phone that won't boot, charge, or be detected by flashtool (or windows) and will not boot in flashmode/fastboot either.
I had plugged in the phone for charging when the battery was considerably low ~ 5-10% before I went to sleep. I remember the red LED glowing, meaning the phone must've been charging.
The next morning I check the phone, the LED was STILL red and the handset was kind of dead - no response at all, whatsoever. Even the reset button on the bacl panel doesn't work (no vibration).
The phone was running BlissPop (5.1.1) with Tangerine kernel.
Now when I plug in the phone for charging, nothing happens at all, not even the red LED. The LED does glow red for as long as I press and hold the power button while it is plugged in (both PC and wall outlet)
I took it to the service center; they say they'll have to change the motherboard. Obviously the phone is not in warranty and there is no way I can pay 10,000 INR that Sony is demanding for the job.
Someone somewhere in the forums suggested allowing the battery to drain completely, but I don't think my battery is holding any charge.
Can anyone help me out?
Thanks

msainani said:
Hi
Can anyone help me out?
Thanks
Click to expand...
Click to collapse
1. Press and hold the reset button for 8 seconds and check if it vibrates. Now plug in charger as there is a possibility that phone is not booting because of insufficient charge.
2. Charge for atleast 20 min without switching on phone.
3. Make sure flashtool is installed properly and so as drivers.
4. Flash Stock ftf
If the above didnt work then try Fastboot mode and simply flash Tangerine kernel.
If nothing works, then its an hardware issue and there is no point in spending 10k in repairing.
Get yourself a brand new Moto G or yureka.

http://forum.xda-developers.com/showthread.php?t=2717303 <- this guy had a pretty similar problem and managed to fix it
I was following the steps he provided: i plugged the phone to PC and held the power button pressed. Surprisingly the PC did recognize the phone after a while- but it was only momentarily and the red LED also stopped glowing. Unfortunately I haven't been able to reproduce a similar situation after that.

bump!

[Q] Strange (hard?) brick

Hi,
After many years of enjoying this magnificent phone the disaster came.
The phone discharged overnight and switched off. In the morning I had to send some texts, so plugged the wall charger into USB socked (a weak one ~500mA), after few moments a charging icon appeared and stated that battery has 1%. Ok, I really had to send those messages: I've pressed the power button and phone started to boot.
Sony logo: OK, purple wave, OK...
After 10-20 seconds it suddenly switched of, red LED started to blink.
I thought: OK, system startup needs a lot of power, maybe a charger is too week to keep up.
So I left phone for few more minutes to charge, but without success.
That was the last time I saw screen was on.
Phone is a C6903, running on a stock, rooted 14.6.A.1.236 with the recent XZRecovery.
Bootloader has been unlocked.
For the moment I've tried everything but opening back and doing the testport-trick.
When I connect the power only red led blinks (I left the phone charging overnight, no change).
When I try to enter flash mode: nothing happens but red blinking light.
When I try to start phone nothing happens at all.
But there is still hope:
I connected the phone to 2A charger using a magnetic cable.
Then I've connected normal USB cable to my PC, strange thing started to happen:
When I pressed volume Up (even after few minutes of connecting power+usb) the phone suddenly jumped to fastboot mode (blue led, it was discovered by PC, fastboot terminal was functional)
When I press power button, phone vibrates for a second, then the led pattern changes to: 1s red followed by 0.1s green, then long red, then it repeats...
I'm still unable to enter any recovery nor flashmode...
I'd really appreciate any help, have you got any ideas left how can I revive my phone?

Qba_S said:
Hi,
After many years of enjoying this magnificent phone the disaster came.
The phone discharged overnight and switched off. In the morning I had to send some texts, so plugged the wall charger into USB socked (a weak one ~500mA), after few moments a charging icon appeared and stated that battery has 1%. Ok, I really had to send those messages: I've pressed the power button and phone started to boot.
Sony logo: OK, purple wave, OK...
After 10-20 seconds it suddenly switched of, red LED started to blink.
I thought: OK, system startup needs a lot of power, maybe a charger is too week to keep up.
So I left phone for few more minutes to charge, but without success.
That was the last time I saw screen was on.
Phone is a C6903, running on a stock, rooted 14.6.A.1.236 with the recent XZRecovery.
Bootloader has been unlocked.
For the moment I've tried everything but opening back and doing the testport-trick.
When I connect the power only red led blinks (I left the phone charging overnight, no change).
When I try to enter flash mode: nothing happens but red blinking light.
When I try to start phone nothing happens at all.
But there is still hope:
I connected the phone to 2A charger using a magnetic cable.
Then I've connected normal USB cable to my PC, strange thing started to happen:
When I pressed volume Up (even after few minutes of connecting power+usb) the phone suddenly jumped to fastboot mode (blue led, it was discovered by PC, fastboot terminal was functional)
When I press power button, phone vibrates for a second, then the led pattern changes to: 1s red followed by 0.1s green, then long red, then it repeats...
I'm still unable to enter any recovery nor flashmode...
I'd really appreciate any help, have you got any ideas left how can I revive my phone?
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Click to collapse
Hi, this just happened to me, my phone has been dead for over 4 weeks with just the red led blinking. i tried the test point thing with no success at that point I gave up but last week i decided to get a new genuine battery and it worked it booted up. Your battery is just completely dead thats why it won't boot up!

tilakpatel22 said:
Hi, this just happened to me, my phone has been dead for over 4 weeks with just the red led blinking. i tried the test point thing with no success at that point I gave up but last week i decided to get a new genuine battery and it worked it booted up. Your battery is just completely dead thats why it won't boot up!
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Thanks for the info! I've ordered a replacement battery already.
I'll open my phone today and measure all voltages. I'll keep you updated.

Good luck

tilakpatel22 said:
Good luck
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Yup! That was it (at least I think so, I don't have new battery yet)
The Al part of positive battery terminal was broken: I have no idea why, maybe because of age, oxidation and high currents that were drained from this LiPo cell...
Anyway I've managed to temporarily join two broken Al parts, kernel and recovery booted successfully.
Now I need to wait for a replacement battery.
Phone is alive again, thanks tilakpatel for help!
But the magnetic cable trick might be useful in other hardbrick cases: just connect magnetic charger, connect normal USB cable to PC and hold volUp. Phone should be able to enter fastboot even with completely drained battery...

Qba_S said:
Yup! That was it (at least I think so, I don't have new battery yet)
The Al part of positive battery terminal was broken: I have no idea why, maybe because of age, oxidation and high currents that were drained from this LiPo cell...
Anyway I've managed to temporarily join two broken Al parts, kernel and recovery booted successfully.
Now I need to wait for a replacement battery.
Phone is alive again, thanks tilakpatel for help!
But the magnetic cable trick might be useful in other hardbrick cases: just connect magnetic charger, connect normal USB cable to PC and hold volUp. Phone should be able to enter fastboot even with completely drained battery...
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no problem