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After an unfortunate rooting session with my Motorola Milestone, the phone now returns into an "dead" mode. It refuses to start at all. I tried charging it and see if it starts by itself, but it doesn't budge and the little while led doesn't lit. The only time when it lit is when I connect it to the PC. I tried putting in it a new battery, taking out the SD card and SIM, but to no avail. I remember seeing a video where a guy used a dissected USB cable to spark the phone into turning on again, so I take it I'll have to use a "hardware approach"? Please help.
I tried following this guide, though without success. The phone still has that white LED lit when it's connected to the PC.
After a reply on this thread I also made, it might be possible that the battery is charged, but the phone refuses to boot at all. Is there any way to unbrick the phone in this state?
Do you think your device is really BRICKED?
If so, you can try to flash your original sbf file into your phone. Guide here: http://forum.xda-developers.com/showthread.php?t=696845
If you are using a Linux, google for "sbf_flash".
I agree with my front floor..ermm, u dont need to worry about its 'dead'. just flash original sbf can rescure your phone.
I had the same problem too, but good news is I tried to revive my phone successfully recently, btw your phone is not 'dead', it's just staying in limbo state, the solution is to pull out the battery and don't connect to any usb, don't try to power it up, it must be completely out of power wait about 12 hours, and then try to power your phone, I think there is some capacitors in the phone which retain the phone state, to make it out of power will wipe out it's state, good luck
algopem said:
I had the same problem too, but good news is I tried to revive my phone successfully recently, btw your phone is not 'dead', it's just staying in limbo state, the solution is to pull out the battery and don't connect to any usb, don't try to power it up, it must be completely out of power wait about 12 hours, and then try to power your phone, I think there is some capacitors in the phone which retain the phone state, to make it out of power will wipe out it's state, good luck
Click to expand...
Click to collapse
"My phone is in limbo state... "
That's a pretty cool statement.
From technical view, it might have happened that something caused a kind of deadloop when reading scratchpad SRAM inside OMAP processor.
This SRAM, as well as the internal RTC is powered by a small battery soldered on the mainboard, while the phone is shut down and the battery is taken out.
What you did was, to wait untill this battery became uncharged.
All SRAM and RTC setting as well then gets erased.
Afterwards the CPU will start up with empty scratch SRAM, might be called a "real" cold boot
Normally the phone should not behave like this. Even if SRAM is not valid the phone should boot up...
...but anyway as you observed it like this, it might happen.
@andoruB:
Apart from that, the Milestone is hard to brick in general.
Might happen though, if you do evil things while flashing new firmware.
Especially while flashing bootloaders...
If you got some more information about the things you did, would be helpful!
Good luck anyway!
scholbert
andoruB said:
After an unfortunate rooting session with my Motorola Milestone, the phone now returns into an "dead" mode. It refuses to start at all. I tried charging it and see if it starts by itself, but it doesn't budge and the little while led doesn't lit. The only time when it lit is when I connect it to the PC. I tried putting in it a new battery, taking out the SD card and SIM, but to no avail. I remember seeing a video where a guy used a dissected USB cable to spark the phone into turning on again, so I take it I'll have to use a "hardware approach"? Please help.
Click to expand...
Click to collapse
how did u root it? can u give a more detailed description? and hows ur phone? sometimes, the milestone would just shut off and wont come up if the battery is gone. Try charging it for maybe 2-3 hours, untouched, and see what happens.
Have this exact problem. Was doing a nandroid recover when the phone got stuck. Pulled the battery out. Placed it back in, pressed the power button. Nothing.
Led lights up only when connected to the computer's USB. Battery was charged before Nandroid recover. Used nandroid a lot of times but for some reason, my stone stopped playing nice.
I just removed the battery. Hoping this works. Can someone please post if you got this same issue resolved? I like this phone no matter how slow it goes sometimes. Thanks!
I completely forgot about this thread, sorry guys!
I don't remember exactly what happened, it's been so long... but I do remember I left the phone "inactive" (it's not like i had much of a choice! XD ) for 1 or 2 months, with the battery out. After I got hold of a wall charger, I plugged in the battery, after I plugged in the charger, and what do you know? It worked! It started charging (was 60% charged, fully charged, I unplugged it, but after putting it to charge again just to make sure it was fully loaded before I would flash a new ROM, it was charged up to about 80%, weirdly, so I guess it was a weird battery problem)
I do remember I didn't do anything to it, so I'm not sure what to tell you guys to do, except leave out the battery for a month or so ^^;
Odd problem, and it seems to be somewhat common with no real "fix".
Bought my HTC One back in May and it has been flawless in every regard until recently. It no longer....charges. Clearly a defect with the phone, I'm just not sure if it is hardware or software related.
I plug the USB charger in (tried three different chargers) and nothing seems to work UNLESS the phone is completely powered off - then it will charge very, very slowly. My computer doesn't recognize a device when plugged into the USB port.
I'm a little dissatisfied with HTC at the moment. They issued an RMA but I have to do without a phone for over a week and they made absolutely no effort to speed up the process. Who knows how long the repair will take! They may make a better product than Apple/Samsung but their customer service is lightyears behind, sadly.
Is there any way to avoid this downtime? Any possible fixes?
I've tried...
1) Booting into safe-mode
2) Factory reset
3) 3 different chargers
Running Android 4.3 on Sprint.
I am encountering the same problem.
My phone will charge if I restart it and plug it into a wall-charger.
If I plug the phone into a PC, it fails to mount as a USB drive AND it fails to charge. After which it will no longer charge from a wall socket unless it has been rebooted.
I have tried a number of different cables, wall chargers, and computers.
I have tried resetting the phone to factory settings.
I have tried alternative ROMs in the hopes it would restore my USB functionality.
No luck.
Is it a hardware problem which requires servicing or is there a software fix to get the HTC One to show up as a USB drive again?
NGO5 said:
Odd problem, and it seems to be somewhat common with no real "fix".
Bought my HTC One back in May and it has been flawless in every regard until recently. It no longer....charges. Clearly a defect with the phone, I'm just not sure if it is hardware or software related.
I plug the USB charger in (tried three different chargers) and nothing seems to work UNLESS the phone is completely powered off - then it will charge very, very slowly. My computer doesn't recognize a device when plugged into the USB port.
I'm a little dissatisfied with HTC at the moment. They issued an RMA but I have to do without a phone for over a week and they made absolutely no effort to speed up the process. Who knows how long the repair will take! They may make a better product than Apple/Samsung but their customer service is lightyears behind, sadly.
Is there any way to avoid this downtime? Any possible fixes?
I've tried...
1) Booting into safe-mode
2) Factory reset
3) 3 different chargers
Running Android 4.3 on Sprint.
Click to expand...
Click to collapse
You might want to try to run HTC's Function Test which includes a battery and charger test - You may do so by dialing *#*#3424#*#* then selecting the Charger Test, followed by more then selecting the Battery test and finally run.
@Wiss said:
You might want to try to run HTC's Function Test which includes a battery and charger test - You may do so by dialing *#*#3424#*#* then selecting the Charger Test, followed by more then selecting the Battery test and finally run.
Click to expand...
Click to collapse
This is a cool trick! Thanks!
Charger came back as fine when charging from wall... but nothing when charging from PCs.
Also, their Charger test is really terrible. It basically says, "Plug in the charger. If the battery indicator says it is charging... then it is charging."
Yeah. I figured that much out on my own.
Looks like I need to hit the service center this weekend.
A question about service... This is my first Android phone. I've rooted it. Will this be a problem with the folks at the service center?
Kamalot said:
This is a cool trick! Thanks!
Charger came back as fine when charging from wall... but nothing when charging from PCs.
Also, their Charger test is really terrible. It basically says, "Plug in the charger. If the battery indicator says it is charging... then it is charging."
Yeah. I figured that much out on my own.
Looks like I need to hit the service center this weekend.
A question about service... This is my first Android phone. I've rooted it. Will this be a problem with the folks at the service center?
Click to expand...
Click to collapse
Any fixes/update? HTC issued an RMA for me...really annoying to be without my phone for god knows how long. Deff regret not going the Apple route.
NGO5 said:
Any fixes/update? HTC issued an RMA for me...really annoying to be without my phone for god knows how long. Deff regret not going the Apple route.
Click to expand...
Click to collapse
What does "RMA" mean?
Same issue. Tmo replaced it for $20
Sent from my SGH-T989 using XDA Premium 4 mobile app
Yeah happened to me as well. The headphone jack also stopped working, but I got it swapped for a new one because of my warranty.
Sent from my HTC One using XDA Premium 4 mobile app
This just happened to me, and after some searching here and elsewhere I found that it seems to be an unsettlingly common issue. What was worse is the only solutions anyone had was RMA/replacement. Well, I called HTC customer service and the woman I spoke to was very helpful
She told me that the charging mode may need to be reset and gave the following instructions.
1. Turn phone OFF
2. Let charge for AT LEAST 10mins even if it doesn't look like it's charging (mine DID show the new charging animation)
3. Press and hold POWER + VOL UP + VOL DOWN for AT LEAST 2mins. Anything less will not reset the charge mode.
4. After 2mins release the buttons and the phone should boot as normal.
My phone is now charging normally.
KiamatDusk said:
This just happened to me, and after some searching here and elsewhere I found that it seems to be an unsettlingly common issue. What was worse is the only solutions anyone had was RMA/replacement. Well, I called HTC customer service and the woman I spoke to was very helpful
She told me that the charging mode may need to be reset and gave the following instructions.
1. Turn phone OFF
2. Let charge for AT LEAST 10mins even if it doesn't look like it's charging (mine DID show the new charging animation)
3. Press and hold POWER + VOL UP + VOL DOWN for AT LEAST 2mins. Anything less will not reset the charge mode.
4. After 2mins release the buttons and the phone should boot as normal.
My phone is now charging normally.
Click to expand...
Click to collapse
AT&T HTC One that was not charging here, verifying this fixed my problem. As I held down the buttons for 2 minutes the phone attempted to boot itself multiple times, for others trying this method: This is normal, just wait the full two minutes.
Hey guys I have started having this same problem and I think it may be due to the charger port having dirt / grease in it. Iplugmy cable in and no charge. Push the cable down towards back of phone and charges again. I am going to give it a clean later and see
Sent from my HTC One using xda app-developers app
Thank you
KiamatDusk said:
This just happened to me, and after some searching here and elsewhere I found that it seems to be an unsettlingly common issue. What was worse is the only solutions anyone had was RMA/replacement. Well, I called HTC customer service and the woman I spoke to was very helpful
She told me that the charging mode may need to be reset and gave the following instructions.
1. Turn phone OFF
2. Let charge for AT LEAST 10mins even if it doesn't look like it's charging (mine DID show the new charging animation)
3. Press and hold POWER + VOL UP + VOL DOWN for AT LEAST 2mins. Anything less will not reset the charge mode.
4. After 2mins release the buttons and the phone should boot as normal.
My phone is now charging normally.
Click to expand...
Click to collapse
Appears to have worked for me. Two days ago I realized my phone was not charging unless i turned it off and charged with my adapter. I could connect to my PC and sync just fine but the charging wouldn't work. This reset procedure appears to have done the trick. Many Thanks:good:
WarningU2 said:
Appears to have worked for me. Two days ago I realized my phone was not charging unless i turned it off and charged with my adapter. I could connect to my PC and sync just fine but the charging wouldn't work. This reset procedure appears to have done the trick. Many Thanks:good:
Click to expand...
Click to collapse
Glad it worked for you.:highfive:
Hey all,
Before I even start here, please no snide replies about using the search box on here or anywhere... if the answer is out there, I'm at a loss for the keywords to get it. Fair enough? As FYI, bootloader is (was??) unlocked, rooted, and has cwm recovery.
So I dropped my MB886 cracking the screen (round of applause please) and in the process of disassembling the case to install replacement I tore (severed) the battery connection cable. Fast forward to phone now reassembled with new screen and battery installed --> -->
The phone now has a green LED that will respond with blinks to button certain presses i.e. the simulated battery pull, but the device doesn't show up in lsusb output or device manager. I've read of similar problems where the phone has been brought back, and I've read of the exact problem with no solution. Basically the only two things I've really read that supposedly work are battery pull button sequence and using OEM charger/cable to get battery to take a charge.
Unlike, say the Atrix 2 where the lonely white LED is there to serve as a reminder that it is a hard brick and that's all you're ever going to get from it again, I haven't even read that this is in fact the #1 sign device is now a brick. So could someone verify it is or isn't? I've never tried to access a device this way, but Is JTAG an option?
I don't get why this should be, despite battery issue, it's all simple hardware swapping involved here as the software wasn't touched and was 100% working even with cracked screen.
Thanks for anyone with an answer or the direction to one.
2 things it could be then: you over- or under-tightened the new battery cable screws to where there isn't a good connection with the board. The screws have to provide equal pressure on the positive or negative contacts or otherwise there's a fault in the circuit.
OR
Your new LCD/digitizer is defective OR wasn't seated well.
Since it was working before, and since you didn't break anything else (to your knowledge), those are the two things I would check.
Dr. Orange said:
2 things it could be then: you over- or under-tightened the new battery cable screws to where there isn't a good connection with the board. The screws have to provide equal pressure on the positive or negative contacts or otherwise there's a fault in the circuit.
OR
Your new LCD/digitizer is defective OR wasn't seated well.
Since it was working before, and since you didn't break anything else (to your knowledge), those are the two things I would check.
Click to expand...
Click to collapse
--
hey, thanks for the input. I remember battery connections being snugged when I originally took it apart, and to be honest, short of having a mini torque wrench I don't know I could put them back any closer to that. the digitizer could certainly be either defective or perhaps have a bad connection, and i am certainly willing to test/check for either, however do you know that this would prevent the phone from booting or cause it to only display the green led as a sign of life? something of the "halt on all errors" in pc bios? seems logical that the led would (or could've) been used like the oc speaker and blink out some code relaying you've got a bad O2 sensor or the gas cap isn't tight.
Over tightening can cause problems. So loosen them a bit if it's just-short-of torque wrench tight. I don't know why it does, but I've read people had problems when they over tightened those screws. That green light could be telling you that the battery is connected poorly.
Is there a possibility that the battery is so depleted that it won't charge? For that, you need a factory cable to charge the battery with power off.
Sorry, to clarify, no I just snugged the battery connections when reassembling, I only meant that i don't think i could get them any closer to the way they were originally without aid of something like a torque wrench.
As for battery charge as a potential issue... to be fair, I only have a OEM Moto wall charger and I think the cable I am using is Samsung. Surely the cable itself isn't the weak link in this chain? A car battery on a multimeter reading 12.0 volts is something like 50% charged and about 12.8 volts is looking pretty good, anyone know what I should get out of the 3.8V Li-Ion on a meter?
PS I double checked the both data cable connections to the motherboard, so I doubt just a bad connection is to blame here.
slerros-1.0 said:
Sorry, to clarify, no I just snugged the battery connections when reassembling, I only meant that i don't think i could get them any closer to the way they were originally without aid of something like a torque wrench.
As for battery charge as a potential issue... to be fair, I only have a OEM Moto wall charger and I think the cable I am using is Samsung. Surely the cable itself isn't the weak link in this chain? A car battery on a multimeter reading 12.0 volts is something like 50% charged and about 12.8 volts is looking pretty good, anyone know what I should get out of the 3.8V Li-Ion on a meter?
PS I double checked the both data cable connections to the motherboard, so I doubt just a bad connection is to blame here.
Click to expand...
Click to collapse
You should get from 3.8 to 4.1.
slerros-1.0 said:
As for battery charge as a potential issue... to be fair, I only have a OEM Moto wall charger and I think the cable I am using is Samsung. Surely the cable itself isn't the weak link in this chain?
Click to expand...
Click to collapse
When I say "factory" cable, I'm not talking about the cable that came with the phone. There is a special Motorola cable (that you can even make yourself) that can charge your phone in situations when your phone is normally not willing to accept a charge.
If all else fails, try this: http://forum.xda-developers.com/showthread.php?t=1077414
Yes! This is brilliant and certainly answers a few questions. It'll take me a bit to get this together to try it, but I'll post back when I get a result. Cheers!
slerros-1.0 said:
Yes! This is brilliant and certainly answers a few questions. It'll take me a bit to get this together to try it, but I'll post back when I get a result. Cheers!
Click to expand...
Click to collapse
Scratch my previous answer. Seems I misunderstood what a "factory cable" is for. It can't actually charge your battery, instead it is used to power the phone so that you can flash/diagnose it, even when your battery is dead. Normally, you need a working phone to charge the battery (with the stock "charging cable").
This information may or may not help you. At the very least, using a "factory cable" may allow you to power your phone on, which would tell you whether the problem is your battery or the phone.
quasihellfish said:
Scratch my previous answer. Seems I misunderstood what a "factory cable" is for. It can't actually charge your battery, instead it is used to power the phone so that you can flash/diagnose it, even when your battery is dead. Normally, you need a working phone to charge the battery (with the stock "charging cable").
This information may or may not help you. At the very least, using a "factory cable" may allow you to power your phone on, which would tell you whether the problem is your battery or the phone.
Click to expand...
Click to collapse
well, i'll take it regardless... i've acquired one of these mythical factory cables and it gets me into fastboot and recovery, so i'd wager, even though i haven't seen it, that it would boot all the way. so being that i don't have either the original charger (although have one that's motorola) or cable (samsung), my best bet is probably just find a store that has both an OEM motorola charger and cable even if they're not for the MB886? surely one for a moto x would work to charge battery, no?
or is this like a chicken and egg problem i now have? a catch 22? i can't charge the battery without a working phone, and i can't have a working phone without a charged battery? golly gee, anybody out there with an MB886 want to charge my battery for me? can i just hotwire the battery to a couple of leads from a charger and bypass using the phone as the charging device? at least to give the battery say 15%-20% to get something to happen... like get this rain cloud perpetually parked above me to blow over from above my head for a day or two maybe?
so, with phone plugged in with "factory cable" here's what i get and when... the phone bootloops on the "bootloader unlocked" warning screen if i don't press anything. volume down gets me fastboot, volume up gets me recovery. phone shows up in both and takes commands... so is it possible i just need to restore a nandroid backup, or is the battery charge the better bet now? i would just try the nandroid for $h!ts and giggles, but the last one i have isn't as fresh as i'd like, but is certainly usable if i must.
slerros-1.0 said:
well, i'll take it regardless... i've acquired one of these mythical factory cables and it gets me into fastboot and recovery, so i'd wager, even though i haven't seen it, that it would boot all the way. so being that i don't have either the original charger (although have one that's motorola) or cable (samsung), my best bet is probably just find a store that has both an OEM motorola charger and cable even if they're not for the MB886? surely one for a moto x would work to charge battery, no?
Click to expand...
Click to collapse
Any generic USB charging cable SHOULD be good enough to charge and flash your phone, especially a Motorola cable. I'm currently using an old Blackberry cable for everything. They should be all the same. In rare instances, a cheap cable may give you issues (I think I had a cable from an old Samsung phone that I couldn't get to work right).
I guess just keep trying until you find one that works. Hate to tell you to go spend $20+ on an official Motorola charger...
Regarding your battery, yes you may be in a bit of a pickle. I've never had to do it, but I've read of users who had to short some leads in order to directly charge the battery. Trying searching through the forums, I'm sure the info is here.
---------- Post added at 02:59 PM ---------- Previous post was at 02:55 PM ----------
slerros-1.0 said:
or is this like a chicken and egg problem i now have? a catch 22? i can't charge the battery without a working phone, and i can't have a working phone without a charged battery? golly gee, anybody out there with an MB886 want to charge my battery for me? can i just hotwire the battery to a couple of leads from a charger and bypass using the phone as the charging device? at least to give the battery say 15%-20% to get something to happen... like get this rain cloud perpetually parked above me to blow over from above my head for a day or two maybe?
Click to expand...
Click to collapse
Try this: http://forum.xda-developers.com/showthread.php?t=892026
All hope is lost, I am now looking for a replacement.
Ok, so here's where I am at with this now... As we're basically talking about any regulated power supply that can put out an excess of (around) 3.8V and 800mA I've opted to use an old ATX computer power supply and wired the mini B USB end of a cable known to have in fact to have charged this very phone... nothing. I have also, for sake of hope, even tried using the wall wort from an iPad (which puts out a cool 5.1V and up to 2.1A). The green LED will shut off after a while of being plugged into said charger, but still no booty action.
As stated before, the phone still works with the factory cable.
So, I gather from this that...
A. some hardware component (i.e. resistor, etc...) on my phones board that is involved in the charging process has gone kaput.
or
B. There is some software flag flipped somewhere that could be unflipped with or without some trickery to what actually is VS what I want the phone to think it's seeing.
Anyone have any thoughts on this or something similar pertaining to B as a course of action?
*update to my update* ... umm, which should now be up to date??
I did a complete wipe of the phone (/system, /data, /data/media, /cache, and /dalvik-cache) and reinstalled the rom... and still nothing.
Hey guys, i had some serious trouble here. My Z3C is now bricked (I'm not sure whether it's softbricked or hardbricked). The Rom is stock. I plugged the charger (magnetic) from 5pm and I went out for some works, and 3 hours late I returned home and found out that my device couldn't turn on. I've tried many ways like combo VL+ and Power, or Reset Button, but useless. Can you help me with this, thank you so much.
leonjun said:
Hey guys, i had some serious trouble here. My Z3C is now bricked (I'm not sure whether it's softbricked or hardbricked). The Rom is stock. I plugged the charger (magnetic) from 5pm and I went out for some works, and 3 hours late I returned home and found out that my device couldn't turn on. I've tried many ways like combo VL+ and Power, or Reset Button, but useless. Can you help me with this, thank you so much.
Click to expand...
Click to collapse
does your pc recognize the phone when you plug it in w/ usb?
if not, then the phone is most likely dead and your best bet is to take it back to the store for a repair/replacement
meaniez said:
does your pc recognize the phone when you plug it in w/ usb?
if not, then the phone is most likely dead and your best bet is to take it back to the store for a repair/replacement
Click to expand...
Click to collapse
well i've brought it to the store already. They connected it to PC, then the Sony/Xperia logo appeared on the phone, but the device still .... I don't understand, I used the stock ROM, no root, no bootloader,... but this brick problem still happened. And after scavenging the internet for solution, I found out that there were many users had this problem like I did.
hopefully my device will be fixed without being teardown or the waterproof ability will become weak.
leonjun said:
well i've brought it to the store already. They connected it to PC, then the Sony/Xperia logo appeared on the phone, but the device still .... I don't understand, I used the stock ROM, no root, no bootloader,... but this brick problem still happened. And after scavenging the internet for solution, I found out that there were many users had this problem like I did.
hopefully my device will be fixed without being teardown or the waterproof ability will become weak.
Click to expand...
Click to collapse
well if the phone responds when connected to a pc then it's not dead, which is good, so you can try to reflash the stock rom with sony Emma
meaniez said:
well if the phone responds when connected to a pc then it's not dead, which is good, so you can try to reflash the stock rom with sony Emma
Click to expand...
Click to collapse
Well my phone is now awake, after a electrical stimulus process. The technician said my device's power was weak. Maybe I should buy a Z2a to use along with my Z3C, well, for precaution purpose.
And I used the stock rom all the time, and I still didn't understand what've caused this problem. But thanks for your great help man. I am really appreciate your support.
I'm really curious, what magnetic cable were you using when this happened?
Was it some cheap magnetic cable or Magnector X or some other?
what the heck is "electrical stimulus process"?
mine gone dead just after 2 weeks of usage. the service center mentioned that it was the motherboard and battery failure. so i guess the best part of the phone is the lcd, huh?
anotherdroid said:
what the heck is "electrical stimulus process"?
Click to expand...
Click to collapse
What he probably meant is: if your battery is completely drained so that the circuit of the phone does not even recognize the battery anymore as to allow/start charging, it often helps when you connect the battery for a short time (few seconds) directly (without the circuit in between) to a power source/charger. This bings it back to life and charging it in a controlled manner via the phone charging circuit is possible again.
Well, in my case, my Z3C battery wasn't completely drained. I charged it when it was 17%, then I went out for about 3-4 hrs, and when I came home, the problem happened.
The store technicians figured out that my battery was hibernate, so they used high voltage electric to charged it, then it came back to life, just like we use electric shock method to save people.
Does it make any difference what is the charger?
well, I have just had the exactly the same problem.
And I can tell the magnetic charger cause this. I plug in with 65% battery left ( I charge it overnight as a habit) and In a morning it's completely dead ( like anyone who has this problem ). I was so panic ...
It could be the magnetic charge draw the juice out of the battery and make it completely drained instead of pump power to the battery, I guess.
can you please specify how to bring it back to life please !! thank you !!!!
---------- Post added at 01:00 AM ---------- Previous post was at 12:59 AM ----------
Tried connect it to my laptop and the pc companion cannot detect it !
Hi all,
I hope somebody can point to some tests I can perform to determine what's wrong with my N7000.
Last night, my N7000 (flashed with NightOwl CM12 beta9 software) was just standing by, in normal operation mode (i.e. not during reflashing or anything of the sort), hooked up to my PC with a USB cable. I was busy with other stuff, so I was not interacting with the phone in any way.
As I was minding my business, I suddenly noticed the phone was displaying its boot screen ("Samsung Galaxy Note N7000" etc), but it remained in this screen, without actually booting. I tried a few times to take the battery out and in, then to power it up again, but it never advanced beyond the boot screen, and after a few such attempts, it is no longer showing any screen of any kind.
I'm an electronics engineer, so I'm comfortable with dealing with low-level hardware. Is there any advice, or anything I can do to analyze and/or rectify the problem with the phone?
Thanks a lot in advance.
sagie said:
Hi all,
I hope somebody can point to some tests I can perform to determine what's wrong with my N7000.
Last night, my N7000 (flashed with NightOwl CM12 beta9 software) was just standing by, in normal operation mode (i.e. not during reflashing or anything of the sort), hooked up to my PC with a USB cable. I was busy with other stuff, so I was not interacting with the phone in any way.
As I was minding my business, I suddenly noticed the phone was displaying its boot screen ("Samsung Galaxy Note N7000" etc), but it remained in this screen, without actually booting. I tried a few times to take the battery out and in, then to power it up again, but it never advanced beyond the boot screen, and after a few such attempts, it is no longer showing any screen of any kind.
I'm an electronics engineer, so I'm comfortable with dealing with low-level hardware. Is there any advice, or anything I can do to analyze and/or rectify the problem with the phone?
Thanks a lot in advance.
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Have you tried charging or changing the battery first? Sounds like you need to reflash your ROM
AutumQueen92 said:
Have you tried charging or changing the battery first? Sounds like you need to reflash your ROM
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Thanks for your reply. It doesn't seem like I'm having a battery issue. I tried with two different batteries, both of them seem to be OK (I measured about 4.2V on both, with no load).
As I tried to explain in my original post, right now the screen doesn't even seem to turn on. I tried getting into download mode without the visual indications, but my PC doesn't detect a connected device. How can I reflash in such a state?
sagie said:
Thanks for your reply. It doesn't seem like I'm having a battery issue. I tried with two different batteries, both of them seem to be OK (I measured about 4.2V on both, with no load).
As I tried to explain in my original post, right now the screen doesn't even seem to turn on. I tried getting into download mode without the visual indications, but my PC doesn't detect a connected device. How can I reflash in such a state?
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Can't help you there, originally I thought it was due to low battery juice so a charge and reflash would work. Sounds like it's been bricked though.
sagie said:
Hi all,
I hope somebody can point to some tests I can perform to determine what's wrong with my N7000.
Last night, my N7000 (flashed with NightOwl CM12 beta9 software) was just standing by, in normal operation mode (i.e. not during reflashing or anything of the sort), hooked up to my PC with a USB cable. I was busy with other stuff, so I was not interacting with the phone in any way.
As I was minding my business, I suddenly noticed the phone was displaying its boot screen ("Samsung Galaxy Note N7000" etc), but it remained in this screen, without actually booting. I tried a few times to take the battery out and in, then to power it up again, but it never advanced beyond the boot screen, and after a few such attempts, it is no longer showing any screen of any kind.
I'm an electronics engineer, so I'm comfortable with dealing with low-level hardware. Is there any advice, or anything I can do to analyze and/or rectify the problem with the phone?
Thanks a lot in advance.
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Click to collapse
Buy a new battery (or use one that you know is changed) (can buy a fong kong aswell). Seems you run out of juice and there is no kernel to let it charge.
backstreetboy said:
Buy a new battery (or use one that you know is changed) (can buy a fong kong aswell). Seems you run out of juice and there is no kernel to let it charge.
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As I already wrote above, the batteries are fine. They are charged and their voltage is sufficiently high, with and without load.
sagie said:
As I already wrote above, the batteries are fine. They are charged and their voltage is sufficiently high, with and without load.
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Pull out battery, wait 1 minute and try again, if the display doesn't turn on i though it's an hw problem
You could try to take battery out, plug the micro-usb cable in the phone and the charger to the power outlet(not your pc or laptop) and see if it does anything. If it doesn't, try to power it on from the power button.
If it still doesn't do anything, with the battery out, plug the micro-usb in the phone, hold volume down, and, while holding, plug the other end of the usb into your computer and see if it displays anything(the computer or the phone, or both).
Still nothing? You might want to try to take it to a cellphone service in your area and ask them to try a JTAG reflash.
nundoo said:
You could try to take battery out, plug the micro-usb cable in the phone and the charger to the power outlet(not your pc or laptop) and see if it does anything. If it doesn't, try to power it on from the power button.
If it still doesn't do anything, with the battery out, plug the micro-usb in the phone, hold volume down, and, while holding, plug the other end of the usb into your computer and see if it displays anything(the computer or the phone, or both).
Still nothing? You might want to try to take it to a cellphone service in your area and ask them to try a JTAG reflash.
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Thanks for your reply, but as I wrote in my OP, I was hoping for a more technical advice than "connect usb and see if something is being displayed".
I don't have the necessary equipment for a JTAG connection, so this procedure would cost me, and I'd like to do some differential diagnosis before asking to have it done. What I'm suspecting is EMMC failure (in which case, JTAG alone won't be enough, and my data is also lost), but I don't know how to test for it - my equipment is limited to an oscilloscope, a multimeter and a soldering iron.
I've done some low-level measurements of the device, it seems the 32,768Hz and 24MHz oscillators are OK, and some good voltage readings inside the circuit suggest the power management IC is probably OK as well.
I'm reading close to zero current when battery is first attached to the device, and around 280mA when I attempt to turn on the device with the power button - but no boot screen.
To sum up: how can I determine if the EMMC is fried, or a simple resurrection via JTAG could revive the device?