Nexus 5 won't boot, 8 blinks - Nexus 5 Q&A, Help & Troubleshooting

I have never had any problem with my Nexus 5. It is now my standby device. Accordingly it doesn't get used much. One day I left it ON and didn't use it for 2 weeks. When I picked it up again it was OFF and didn't want to turn on. Naturally I thought the battery had drained and put it to charge.
Instead of the battery symbol on the screen (indicating it is being charged), I get a sequence of 8 red blinks on the bottom notification light (which is just above the charging port), each blink lasting 0.5 seconds, then 0.5 seconds off (so total duration of blinking sequence is 8 seconds), then 1.5 seconds off, then blinking sequence starts again.
I left it connected to the charger for 2 weeks. Nothing changed.
I then replaced the battery with a brand new OEM battery, same thing again.
I cannot get into recovery mode nor is the phone recognised when I connect it to the PC.
Any ideas? Anyone knows the meaning of this blinking sequence?

nitonreu said:
I have never had any problem with my Nexus 5. It is now my standby device. Accordingly it doesn't get used much. One day I left it ON and didn't use it for 2 weeks. When I picked it up again it was OFF and didn't want to turn on. Naturally I thought the battery had drained and put it to charge.
Instead of the battery symbol on the screen (indicating it is being charged), I get a sequence of 8 red blinks on the bottom notification light (which is just above the charging port), each blink lasting 0.5 seconds, then 0.5 seconds off (so total duration of blinking sequence is 8 seconds), then 1.5 seconds off, then blinking sequence starts again.
I left it connected to the charger for 2 weeks. Nothing changed.
I then replaced the battery with a brand new OEM battery, same thing again.
I cannot get into recovery mode nor is the phone recognised when I connect it to the PC.
Any ideas? Anyone knows the meaning of this blinking sequence?
Click to expand...
Click to collapse
what is the current state of the phone? do you just get the blinking when charge cable connected? no boot loop ?

So currently the phone doesn't switch on and cannot be charged it would seem.
There is no bootloop.
And yes, the blinking only goes on whilst a charging lead is connected or whilst it's on a wireless charging cradle. No blinking when removed from the charger.

nitonreu said:
So currently the phone doesn't switch on and cannot be charged it would seem.
There is no bootloop.
And yes, the blinking only goes on whilst a charging lead is connected or whilst it's on a wireless charging cradle. No blinking when removed from the charger.
Click to expand...
Click to collapse
you said you replaced the battery , I would check that connection , try removing the battery if possible and reconnecting it. Try the old battery too if you still have .
In my experience i'v seen that blinking light in other devices when they overheat.

I only replaced the battery because of the blinking problem as I suspected a deep discharged battery. Anyway the connections are good. 100%.
I never had overheat issues on my N5 as it was just used for basic functions, no gaming etc. I wouldn't imagine the device had overheated while it was left unattended on my desk, and there definitely is no overheating happening now as it doesn't even switch on...

nitonreu said:
I only replaced the battery because of the blinking problem as I suspected a deep discharged battery. Anyway the connections are good. 100%.
I never had overheat issues on my N5 as it was just used for basic functions, no gaming etc. I wouldn't imagine the device had overheated while it was left unattended on my desk, and there definitely is no overheating happening now as it doesn't even switch on...
Click to expand...
Click to collapse
sounds like your hammerhead finally checked out ... the old saying goes " if you don't use it, you lose it " .... try all combinations like hold power and volume down at the same time for 10 seconds , power and volume up ..etc
other than that i'd take a multi meter and make absolute sure you have power to the motherboard , then if you still do, it could be a short ..
if you want to go even further, a complete tear down of the phone, check for corrosion ( whitish residue on terminals and motherboard ) clean off with toothbrush only ( no water or liquid of any kind ) be careful removing ribbon cables and re-inserting them ... you can find lots of stuff on youtube for that.
good luck

Related

[Q] Help!! [Solved]

Hi Guys,
Does anyone have an Idea what fast blinking amber light means on DS?
My battery was low around 2% and I connected it to the stock charger and started watching a movie, after 10 mins or so my phone switched off and amber colored light started to flash, I am not able to switch it on now and after 30 mins or so even the blinking light went off.
Had Aplha CM10 ROM flashed and was working normally till now keeping my fingers crossed that it is not bricked. Please tell me it is not:crying:
EDIT:
Solved: Finally revived my phone by directly charging the battery from the USB port of my laptop. Seems the battery went too flat to charge itself in the phone.
mohitsapru said:
Hi Guys,
Does anyone have an Idea what fast blinking amber light means on DS?
My battery was low around 2% and I connected it to the stock charger and started watching a movie, after 10 mins or so my phone switched off and amber colored light started to flash, I am not able to switch it on now and after 30 mins or so even the blinking light went off.
Had Aplha CM10 ROM flashed and was working normally till now keeping my fingers crossed that it is not bricked. Please tell me it is not:crying:
Click to expand...
Click to collapse
Did it start charging when you connected the charger? when the desire S has no battery at all, and you connect the power, the light blinks, meaning that it hasn't got enough power to boot
So just make sure the charger works and leave it charging for a couple of minutes untill you get the classic charging LED on, and then try to boot again
TatoValverde said:
Did it start charging when you connected the charger? when the desire S has no battery at all, and you connect the power, the light blinks, meaning that it hasn't got enough power to boot
So just make sure the charger works and leave it charging for a couple of minutes untill you get the classic charging LED on, and then try to boot again
Click to expand...
Click to collapse
Thanks TataoValverde, so I guess it is not bricked. I had left the phone connected to the charger overnight but still it doesn't boot so it means it is not charging. Now nothing happens not even blinking light
So is there anyway i can revive it??
Make sure the battery is making connection - use a piece of paper to hold it firmly in place if necessary.
Try a different charger - any USB one should be fine.
Or buy a new battery as its much cheaper than a new phone.
If the charging circuitry on the phone is screwed then there is nothing you can really do unless you fancy changing the main board.

Moto G doesn't charge or power up

I'm sorry if this topic has been discussed so many times, but I couldn't find symptoms like the ones my Moto G has.
Two weeks ago, my Moto G reached out to 0% and shuted down. After that I've tried the following possible fixes:
Leave the phone out a day off the charger and then charging it for 3-4 hours or even all night long.
Pressing the power button for several minutes while connected to the wall charger.
Connecting it to several chargers (750, 1500 and 2000 mah).
Taking out the battery cover, disconnecting the battery flex and then reconnecting it.
A few things I noticed were that my phone came with a 450 mah charger in the box, and when I connect the phone, the LED light lits continuosly and it never goes off.
When I tried with 1500 and 2000 mah chargers, the LED lits too, and while pressing the power button, the LED light flashes one time after 2-3 minutes, and then flashes again after 5-6 minutes. But these flashes are very glimmer. And no matter what I do, the screen never lights up, and the LED light never goes off.
Please, I desperately need your help. I bought this phone two months ago and I've unlocked the bootloader, so I don't think warranty will cover the phone.
Thank you very much.
if you press power + vol down does the phone goes to recovery? i figured out that even if the phone does not boot you can go to recovery (or is it bootloader?) and than go to barcodes and press vol up. some codes will show up. after a min or so it will turn off. repeat this until the phone wont even boot to recovery. now plug it in the charger and hold power button for 2-3min and than leave it charging for an hour and than try to power it up. if it will not work try to unplug it and plug it in again after a minute and than hold the power button again for 2-3min and leave it charging for an hour again. i got my moto g booted after few tryes.
it seems that moto g wont charge until the battery is completely drained.
I'm sorry but the phone won't boot into bootloader mode neither. Are there any other recommendations? Thanks for your reply.
EDIT: I'll see if I can record a video of the phone's behavior. Maybe it could help.
How to resolve this dead battery issue...
rodrigojfuentes said:
I'm sorry if this topic has been discussed so many times, but I couldn't find symptoms like the ones my Moto G has.
Two weeks ago, my Moto G reached out to 0% and shuted down. After that I've tried the following possible fixes:
Leave the phone out a day off the charger and then charging it for 3-4 hours or even all night long.
Pressing the power button for several minutes while connected to the wall charger.
Connecting it to several chargers (750, 1500 and 2000 mah).
Taking out the battery cover, disconnecting the battery flex and then reconnecting it.
A few things I noticed were that my phone came with a 450 mah charger in the box, and when I connect the phone, the LED light lits continuosly and it never goes off.
When I tried with 1500 and 2000 mah chargers, the LED lits too, and while pressing the power button, the LED light flashes one time after 2-3 minutes, and then flashes again after 5-6 minutes. But these flashes are very glimmer. And no matter what I do, the screen never lights up, and the LED light never goes off.
Please, I desperately need your help. I bought this phone two months ago and I've unlocked the bootloader, so I don't think warranty will cover the phone.
Thank you very much.
Click to expand...
Click to collapse
Answer.....I have exact similar problem for last one week and i figured it out how to recover..u have to leave the phone for 24 hours to discharge and then open the battery...See youtube tutorial how to open it....
then go to any local mobile repairing shop and ask him to charge or boost your battery..they have some kind of boost machine..ask them to do it for 10 min the put on the battery and hold the power button led will blink 3 times put the phone in charge i guarantee you u ll get ur moto g back....i have also sucessfully removed the outer glass from digitizer,,...but that another story...hope i helped you...
I recently ran into this... I let my XT1032 battery deplete to 0% and then had a difficult time getting it to recharge.
When the phone was plugged in to any of these:
- my desktop PC
- powered USB hub
- game console USB port
it powered on briefly and showed the white screen with 0% battery indicator. The screen would then go blank and then after a few minutes the phone would boot successfully to my lock screen. However, it seemed to stop taking charge at this point and after a few minutes would shut itself down again. And the cycle would repeat.
I was able to get it to boot to the bootloader through normal means (Vol. Down + Power). But it behaved similarly in that it seemed to stop taking a charge and so after a few minutes it would power down as the battery ran out. And the cycle would repeat.
What finally worked for me was to use a different charger (and cable). I ended up using the charger that came with my tablet (Nexus 7) and the phone charged up the battery without issue -- I'm not sure whether the charging cable made a difference.
There's some discussion here:
http://androidforums.com/threads/moto-g-died-and-now-wont-charge.837568/
that suggests that when the phone hits 0% battery, it becomes fussy about the charger and that a high charging current is required or else the charging circuit shuts down.
My experience would support that theory. Seems a rather dumb design on Motorola's part...
Lesson here is to not let your device run down to 0%!

[Q] Black screen but charging led lights up

Hi There,
Yesterday morning I went to work with a completely charged Moto G. When I arrived at work my screen was black and had become unresponsive.
The powerbutton doesn't wake up the phone, tried several times, holding it for more than 150sec. When connected to a charger (tried multipe) the charging led lights up, not blinking.
I have read on a motorola forum that this could indicate that there's insufficient power in the battery to activate the display.
However it was completely charged.
My Moto G has an unlocked bootloader, is rooted and has a custom rom (C-Rom, [ROM][AOSP][KK][12/05] **C-RoM** -4.4.2- -v6.5)
Is there anything I can try or is my phone a brick now?
Thanx in advance
The same problem
I am having the same problem too.
My moto G drained its battery until it shut down. Then i promptly went to charge it. The screen is blank and and notification light is on.
snooze1973 did u find a solution or is it now working?
PS My Moto g bootloader unlocked, stock rom,rooted and it is on the Faux123kernel
Thanks in advance
No luck Yet
No luck yet, left it on the charger for a whole night, still just the white charging led. No response to the power button.
But I refuse to believe it is completely dead. Before I had a HTC Desire S, tried many custom roms, never bricked it.
I just can't imagine what happend the day before yesterday.
Perhaps I'll try and find a more powerfull charger.
snooze1973 said:
No luck yet, left it on the charger for a whole night, still just the white charging led. No response to the power button.
But I refuse to believe it is completely dead. Before I had a HTC Desire S, tried many custom roms, never bricked it.
I just can't imagine what happend the day before yesterday.
Perhaps I'll try and find a more powerfull charger.
Click to expand...
Click to collapse
I think I found a solution. I followed these steps
1. Charge your phone via USB cable on your computer.
2. The white notification light should come on.
3. Then, do not touch any buttons on your phone.
4 The iconic Battery Logo(white background) should appear after several minutes.
Followed these steps and my phone eventually turned on
Good luck!!
Still no luck, trying a different cable (blackberry) now.
Not working for me, still just a beautiful white led indicator.
Start to think it's probably dead. Or battery thinks it's drained somehow.
Maybe anyone else has an idea?
Ok, I opened the Moto G and disconnected the battery, reconnected it after 10 sec. still no luck
Odd thing though and not very promising is that when the battery is disconnected the charging led still lights up when charger is connected.
Could this just mean that only the battery is fully drained or that the device is messed up?
Guess I going for a new one.
See if a new battery helps
Bought a new one today, so I can try and fix the other. First I will leave it for at least 24 hours.
Perhaps I will exchange the batteries at one time to see if that helps.
the same problem
shahtheass said:
I am having the same problem too.
My moto G drained its battery until it shut down. Then i promptly went to charge it. The screen is blank and and notification light is on.
snooze1973 did u find a solution or is it now working?
PS My Moto g bootloader unlocked, stock rom,rooted and it is on the Faux123kernel
Thanks in advance
Click to expand...
Click to collapse
i had the same problem, i had no idea how to turn on my moto g.
anyone could help please
Black screen but charging led lights up
I am experiencing the same issue.
I bought a dead moto g for part replacement with my current moto g. Just out of curiosity, I plugged in the charger to the newly arrived moto g and observed the similar behavior.
To go further, I swapped the battery and tried to turn it on, and voila, it boots!! It has C-ROM. But it won't charge the battery any how. Its again back to
original behavior : No Screen, No Battery Charging, Only notification LED glows. I kept it on charger for whole night, but no luck.
The notification LED turns on even if I the battery is removed and charger is plugged in. What does that really mean?
Is there a probability that the charging circuit is broken? or it has something to do with bootloader, C-ROM and custom kernel? Does any one thinks reverting back to Stock ROM will help out in any way?
Same here...
Exactly the same with my little brother his Moto G 4G (1st gen) (stock rom, BL unlocked & rooted).
Solid white LED when plugged in, no other response.
The most advertised trick does not work (step 6: flashboot screen doesn't show up)
[SIZE=+1]Q28: Moto G will not power up (addition to Q16 and Q25)[/SIZE]
Plug it into the charger
Hold the VOL DOWN key
While still holding the VOL DOWN key, press and hold the POWER key
Hold both keys down for over 120 seconds. This is more than two minutes and will seem like a long time. You might want to time yourself to make sure you hold it longer than two minutes.
After holding the keys down for more than two minutes, release them.
The Flash Boot screen will display, and the Normal Reboot option will be highlighted
Press the VOL UP key and the device will start a normal reboot.
If you have tried the above and it didn't work, try this:
Plug in the phone for 15 minutes.
Proceed to Step 2 above.
Click to expand...
Click to collapse
(source: http://forum.xda-developers.com/showthread.php?t=2537119)
It has been an hour on the charger of my Asus T100 Tablet (5V, 2A). Still no luck...
Due to the lack of other solutions, I guess all our phones are ready for RMA...
Update: an overnight charge on a 5V 1A charger did the trick. White led was gone this morning, booted normally.
JoWannes said:
Exactly the same with my little brother his Moto G 4G (1st gen) (stock rom, BL unlocked & rooted).
Solid white LED when plugged in, no other response.
The most advertised trick does not work (step 6: flashboot screen doesn't show up)
(source: http://forum.xda-developers.com/showthread.php?t=2537119)
It has been an hour on the charger of my Asus T100 Tablet (5V, 2A). Still no luck...
Due to the lack of other solutions, I guess all our phones are ready for RMA...
Update: an overnight charge on a 5V 1A charger did the trick. White led was gone this morning, booted normally.
Click to expand...
Click to collapse
i hv been facing the same problem since past 2 days, it was working gud wen suddenly it went bad. i remember using it and putting it back into my pocket & after like 10 mins wen i tried to open it, it didn't respond. i tried to hard reset it (by pressing vol down n power button) & by forced reset but it didnt work. now, i have put it on charge on a source of 5v 1A charger. i hope it works and works well. now my question is that i remember my cell was nearly 50% charged wen all of ds happened, so i wish to know that is dre some hardware problem or dead battery problem?? thnx in advance
shahtheass said:
I think I found a solution. I followed these steps
1. Charge your phone via USB cable on your computer.
2. The white notification light should come on.
3. Then, do not touch any buttons on your phone.
4 The iconic Battery Logo(white background) should appear after several minutes.
Followed these steps and my phone eventually turned on
Good luck!!
Click to expand...
Click to collapse
I don't know why a USB charger and a PC connection should make any difference when the phone is not booted up.
I had the same problem. I solved it by removing the battery by opening the phone (mine was out of warranty) and taking it to repair shop where they charged the battery for an hour. Then when I put it back in, the phone rebooted normally with 10% charge.
But ever since, my battery life has deteriorated. Doesn't even last one full day. And I have had the same issue twice. I think I need a new battery.
snooze1973 said:
Bought a new one today, so I can try and fix the other. First I will leave it for at least 24 hours.
Perhaps I will exchange the batteries at one time to see if that helps.
Click to expand...
Click to collapse
Did New battery helped u in booting device?? because i am having the same problem.
same problem here.just call from Moto Care they told to charge bettery for 7 hours min.then on the phone.let see if it works i will update..
Same Problem to me not for me this problem is faced by several moto g users
snooze1973 said:
Hi There,
Yesterday morning I went to work with a completely charged Moto G. When I arrived at work my screen was black and had become unresponsive.
The powerbutton doesn't wake up the phone, tried several times, holding it for more than 150sec. When connected to a charger (tried multipe) the charging led lights up, not blinking.
I have read on a motorola forum that this could indicate that there's insufficient power in the battery to activate the display.
However it was completely charged.
My Moto G has an unlocked bootloader, is rooted and has a custom rom (C-Rom, [ROM][AOSP][KK][12/05] **C-RoM** -4.4.2- -v6.5)
Is there anything I can try or is my phone a brick now?
Thanx in advance
Click to expand...
Click to collapse
Same Problem to me not for me this problem is faced by several moto g users are facing this if they unlocked their device bootloader.
I have a simple solution for that I have faced this issue long time ago and now I know a permanent solution. You all have usb cables in your house...just took a old one and cut it from the mini usb side..there are 4 wires...you have to care about red and black..open your moto g battery and took it off from the phone now connect the usb cable to your pc and touch the red wire to the positive and black to the negative ...just do this for 45 seconds and immediately connect the battery to the phone and connect the charger...phone will starts charging from 0 % pls do not wait to connect the switch and back cover just charge it upto 20 % the cover it up.....DO NOT LET YOUR BATTERY DRAIN MORE THAN 30% AS THIS IS COMMON PROBLEM IN LI ION BATTERIES...
sayonsamui said:
I have a simple solution for that I have faced this issue long time ago and now I know a permanent solution. You all have usb cables in your house...just took a old one and cut it from the mini usb side..there are 4 wires...you have to care about red and black..open your moto g battery and took it off from the phone now connect the usb cable to your pc and touch the red wire to the positive and black to the negative ...just do this for 45 seconds and immediately connect the battery to the phone and connect the charger...phone will starts charging from 0 % pls do not wait to connect the switch and back cover just charge it upto 20 % the cover it up.....DO NOT LET YOUR BATTERY DRAIN MORE THAN 30% AS THIS IS COMMON PROBLEM IN LI ION BATTERIES...
Click to expand...
Click to collapse
Interesting, but how did you determine the negative and positive terminals on the battery flex? Can you, please, mark the attached photo of the battery of moto g to help the community?
Also, as a side note I think I discovered a solution - I connected the phone to my PC's usb 2.0 port and held the power button for 2 minutes - at which the LED blinked momentarily and then continues to shine. I left the phone connected and continued to browse for solutions to this battery charging dilemma - then about 5 minutes the LED stopped shining (and I breathed a sigh :silly: !!! becaue this is the sign of battery being charged!) and after about 30 minutes of charging I turned the phone on and it was 16% charged. Well I haven't been able to reproduce this solution (since, I have been extra cautious with the battery now!) but I would surely like to know if anyone can reproduce this solution:
1. Plug in your phone to USB 2.0 or 3.0 port with original moto g cable and confirm that the LED shines continuously.
2. Hold the power button for 2 minutes (which I discovered to be a long time if you just continuously stare at the phone!) after which you will notice that the led with blink momentarily before continuing to shine continuously. (I suggest you continue holding it for another 2 minutes after which the led will blink again momentarily)
3. Leave the power button and leave the phone attached to the port for at least 30 mins before attempting to power on.

Potential Fix to the Grey Battery Bug

One of my S4's suffered the grey battery bug today, so the symptoms were:
Device would not switch on (Samsung logo appeared, but switched off within a second)
Device would not charge (grey battery with a circle, but no actual charging seemingly took place)
Device would switch on with a different battery.
I could not get the device to charge or switch on, but through a strange set of steps, I was able to make it charge and it eventually started working. These may work for you, or they may not, so just bear that in mind.
1. Plug phone into charger, leave on the grey battery for a few seconds.
2. Pull the cable and hold the power button.
3. When the Samsung logo appears, immediately plug the cable back in.
When I did this, the phone seemed to get stuck at the Samsung logo. So it did not boot, and it did not go off either. I left it for about 2 or 3 minutes.
4. Pull the cable and the battery after 2 or 3 minutes. Put the battery back in.
5. Plug the USB connector.
After doing this, my grey battery (which seemed completely unable to charge before) went to a green (almost entirely depleted) and slowly started to charge. I left it for half an hour before switching on the phone. Voila, it's now working and up to 58%.
I can't say what causes this issue, I've heard that it can be caused by defective USB charge boards, but I'm not convinced because unless the socket itself is damaged the board itself really shouldn't fail. It's possibly being caused by low powered chargers (like my USB cable which I used). I observed a similar issue on the N4 (red light of death), after using a similar low power charger.
Anyway, this might be useful, or might be useless, but if it saves you a few quid then it's worth it
you save my life thanks

Sony Xperia Z3 (D6616) - Sudden Death

Was accessing dual recovery to wipe for a clean slate and it had a sudden death. The charging LED was no longer lit. Left the phone alone for about 2 weeks to let it drain but no response. Decided to order another battery for testing thinking it may have been bad, still no response. What I did notice is that if the battery is removed and the charger is connected, the LED blinks red constantly. However, if I were to attach the battery connector the LED will stop blinking after a few seconds. Is this an issue with the motherboard itself or can there something be done to bring it back to life?
*Update*
Let it charge for a couple of hours. Still not turning on but getting some response at least. The phone will now vibrate in sets of 3's if I hold down Power and Volume +. When trying to charge, the red LED will come on for 5 seconds then off every 5 seconds. When connected to the PC, it shows as unidentified USB, but the sound of it being disconnected is constantly going off. Not sure if anyone knows how I should proceed from here...
Hi
Cruxnik02 said:
Was accessing dual recovery to wipe for a clean slate and it had a sudden death. The charging LED was no longer lit. Left the phone alone for about 2 weeks to let it drain but no response. Decided to order another battery for testing thinking it may have been bad, still no response. What I did notice is that if the battery is removed and the charger is connected, the LED blinks red constantly. However, if I were to attach the battery connector the LED will stop blinking after a few seconds. Is this an issue with the motherboard itself or can there something be done to bring it back to life?
*Update*
Let it charge for a couple of hours. Still not turning on but getting some response at least. The phone will now vibrate in sets of 3's if I hold down Power and Volume +. When trying to charge, the red LED will come on for 5 seconds then off every 5 seconds. When connected to the PC, it shows as unidentified USB, but the sound of it being disconnected is constantly going off. Not sure if anyone knows how I should proceed from here...
Click to expand...
Click to collapse
Hi my phone is a D6603 and i was having a very and inusual problem like you Sudden death with some response vibrating in sets of 3's. My problem was resolve when i remove the sim then press the reset button 2 times in a row but slowly and the phone was starting again
I dont remember if it was or not conected try both ways
Back up your files and start working to keep it warm and dry, remember that it can be water damage. I downloaded minergate and began to mine in easy difficulty so that it would not become slow, but at the same time to keep it warm. It is only to dry if it was damaged by water, I do not recommend anyone to mine with a smartphone xD

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