[Q] Diagnose and repair my phone - Nexus 4 Q&A, Help & Troubleshooting

Hello
I have a broken Nexus 4 which I would like to repair for a friend but I'm not 100% of the issue, so I was hoping someone might be able to diagnose it with the symptoms which are :
When I plug power, red led flashes once
When i plug the power while holding power and volume, red led flashes once then android will start booting normally but shuts down after 2-3 sec and the red led flashes once again
Same thing happens if remove the battery
Anyone knows for sure what I should replace ?
Thanks

After some trial and error with 2 broken nexus 4, I managed to get a combination that sort of works :
Phone is not recognised by computer
Phone can only be restarted by pressing power up + volume, which means factory reset and system updates are not working
Battery % is wonky, sometimes it will drop to zero, most of the time it stays at 45% while charging
Any advice ?

Sounds to me like the battery needs replacing.

Related

Problems while charging the phone

Hey guys, i got a problem with my N4 :
When i plug-in the charger, the battery icon appears, after few cycles of the battery icon the screen turns off and if i turn on the screen again, the phone turns off and the red led start blinking.
I recently tried to fix the "red light of death" issue that i had ( i removed the battery connector and then put it in again ).
Also, if I hold power + down volume, the n4 starts but turn off after showing the "Google" logo.
I believe its a software problem but i dont know neither which one it i nor how to fix it.
I'm sry for my english and i hope someone will help me
Thanks.
That sounds more like a hardware issue. You can try flashing the stock images, but I'm guessing you're in need of an RMA.
One last thing, when i go to fastboot ( holding power + down volume ), as soon as i reach the menu the phone instantly boot without me telling him to do so. Thats why i think theres something wrong with the software.
Any last moment idea before i sent my phone to RMA ?

[Q] Blinking red led, no boot when plugged in

Hi all,
My Nexus 4 just shut down after going really hot. I cannot turn it on anymore, when I press the On/Off button with our without the volume buttons nothing happens, except if it is plugged in.
In that case, after about 15 sec I have a blinking red led.
I think the problem is material, but I don't know if the problem comes from the battery or something else. I don't want to buy a new battery if my Nexus 4 is dead... So I am trying to figure out if the problem is about the battery or not. I think not because even when plugged in, nothing shows on the screen when I try to turn it on.
What do you think ?
Thanks very much for your help,
Guillaume.
blinking red led
GrIc said:
Hi all,
My Nexus 4 just shut down after going really hot. I cannot turn it on anymore, when I press the On/Off button with our without the volume buttons nothing happens, except if it is plugged in.
In that case, after about 15 sec I have a blinking red led.
I think the problem is material, but I don't know if the problem comes from the battery or something else. I don't want to buy a new battery if my Nexus 4 is dead... So I am trying to figure out if the problem is about the battery or not. I think not because even when plugged in, nothing shows on the screen when I try to turn it on.
What do you think ?
Thanks very much for your help,
Guillaume.
Click to expand...
Click to collapse
When you get the blinking red led while on the charger, how many time does it flashes ?
Is it the same as this:
"
By red flashing light, I mean: Hold power for 12 secs with good charger connected gives flashing red light: one short, pause circa 2 sec, 11 flashes at one per sec, pause under 1/4 sec, one short dim flash, pause c. 2 sec, repeat. This is the notification LED directly above the USB socket.
"
cxda48 said:
When you get the blinking red led while on the charger, how many time does it flashes ?
Is it the same as this:
"
By red flashing light, I mean: Hold power for 12 secs with good charger connected gives flashing red light: one short, pause circa 2 sec, 11 flashes at one per sec, pause under 1/4 sec, one short dim flash, pause c. 2 sec, repeat. This is the notification LED directly above the USB socket.
"
Click to expand...
Click to collapse
Hi cxda48,
I have the exact same behaviour : 11 flashes, a short pause followed with one short flash, then repeat.
You have an idea of what it means ?
Thanks !
I had a similar problem. The phone will not start and when you put the red light blinking loaded several times. My Solving: I opened the phone and pulled the battery pins. I connected the battery and the phone started normally.
anetgrup said:
I had a similar problem. The phone will not start and when you put the red light blinking loaded several times. My Solving: I opened the phone and pulled the battery pins. I connected the battery and the phone started normally.
Click to expand...
Click to collapse
*similar* but not the same I guess.
It seems like the IC that turns on and off the LED is the PMIC ("Power Management Integrated Circuit"). When something goes wrong, this IC has got some intelligence to give out some information about what is wrong (a bit like the bios on a PC). So 11 red LED flashes is an error code I guess. When the battery is disconnected it's 1 red LED flash (that error code probably means battery not present/worng) in my experience.
I know at least that with the 11 flashes issue, changing / reconnecting a charged battery does not solve this issue
Would anyone have information about what these codes mean ?
this just happened to me. Any solutions?
jimmy2823 said:
this just happened to me. Any solutions?
Click to expand...
Click to collapse
I thought I should give some feedback on how I sorted out this problem:
After discussion with google after-sales, I sent it for repair to the official LG repair contractor in the UK (SBE Ltd, based in Ashford, UK).
I precisely chose to go through LG repair rather than google because google warned me they would replace the nexus4 so I would
1) loose my data
2) get a potentially worse phone(refurbished) than mine (which is really mint with outstanding battery life)
I sent the phone with instructions on what I think needed done : replacement of the PMIC and *not* a swap of motherboard. When the nexus4 was back, I noticed they ignored my message & swapped the motherboard .
They kept my housing but they also swapped the battery(was not required) and now the battery life is very poor ! I am still in communication with LG regarding the battery issue

[Q] Is my Nexus 4 dead? What can I do to recover it?

Hi,
A few days ago my nexus 4 stopped working on me, I haven't found anyone having an identical issue so far.
Essentially, my phone does not turn on any more. I have tried holding volume down and power and this produces nothing. The only thing I can get is the red LED turning on if I hold power for about 10 seconds with it plugged in, it lingers a bit if I release power., but immediately turns off if unplugged.
It stopped working while it was plugged in and at about 60% battery, I had not had any problems with the device in the past, it worked flawlessly up to that moment. The device was running stock without any third party firmware.
Does anyone know what happened, and what I can do about it? I somewhat suspect a battery issue but I'm not sure, any help would be appreciated.
Thanks!
Hi, I'm having the exact same issue. My Nexus 4 (stock Lollipop 5.0, not rooted) died while the battery was 80% full, and the phone was charging. Shortly before it died, it restarted several times within a few hours. The phone doesn't respond to power button, neither it responds to power/volume button combination. When the phone is connected to a charger, nothing happens - no LED, no screen. If the phone is connected to a charger, and I press the power button (or power/volume) for >10s, LED starts blinking in red. The blinking pattern is weird - it blinks steadily 10 times, and gives one short blink. Any suggestions? Or any hope to get the data out?
You can possibly fix this by holding either power up or down for 15+ seconds and then connect the phone to a computer with USB. This has worked for me.
The problem might be that the battery is dying, because I've only had this problem when I've let the battery discharge, and then turned it on again. It's probably a mechanism to protect the battery from becoming "too" discharged, which might break it.
Everytime I had this in the past, I was able to fix by plugging into a very high powered charger (1000mA <) and holding down vol up + power. Eventually, it seems to trickle charge and then start. Once it's started, give it 20 seconds to get a boost then switch it on.
CrackyOxide said:
Hi,
A few days ago my nexus 4 stopped working on me, I haven't found anyone having an identical issue so far.
Essentially, my phone does not turn on any more. I have tried holding volume down and power and this produces nothing. The only thing I can get is the red LED turning on if I hold power for about 10 seconds with it plugged in, it lingers a bit if I release power., but immediately turns off if unplugged.
It stopped working while it was plugged in and at about 60% battery, I had not had any problems with the device in the past, it worked flawlessly up to that moment. The device was running stock without any third party firmware.
Does anyone know what happened, and what I can do about it? I somewhat suspect a battery issue but I'm not sure, any help would be appreciated.
Thanks!
Click to expand...
Click to collapse
It seems like the Red Light Of Death follow this link

LG G2 doesn't boot and flashes 8 times red after repair

Dear fellow XDA members,
Yesterday, I replaced by LG G2 screen and after the repair the phone wouldn't boot anymore. It however shows signs of life if I plug in the charger, this is what happens then:
Notification light blinks 8 times red
Pause
8 times a red blink
Pause
and this continues for ages.
What I did sofar:
-Tried to soft reset & hard reset via button combo (no result)
-plug out the battery connector & plug it in again
-check all connections and possible damage (no potential problems found)
-Check voltage of battery (it is around 3V)
-Put phone in charger for a whole night
Do you guys have any ideas what is causing the problem? what does the 8 blinks error code mean? Hopefully you can help me out!
that sounds like the new screen is damaged.
try the old one and see if it boots
i dont think that it has anything to do with the battery
no idea what the led error code means
Not working.. Also replaced battery, but still same blinking led

How to turn on wileyfox storm after battery fully drained.

Hello to all experts.
1- Accidently my wileyfox storm battery was fully drained at night and i was not at home during that time.
I connected mobile to wall outlet it was showing red colour on home button when connected (as a battery charging indication) but after near about 8 hours i tried to turn it on but no luck. I pressed power button for many seconds, many times but no luck.
Now what should I do to turn on my wileyfox storm.
2- My second question is how to open back cover of my wileyfox storm. i did not find any notch or point to open back cover to see inside.
Thanks in advance.
Plug your phone on charge but not in usb, and wait about 20mn
I am having this problem as well right now, how did you fix it?
I too have the same problem , it was off because drain , but then put in office is no longer lights . the light is always red . what can I do?
Leave it charging for a while from the mains. Red light means charging on low charge, the screen doesn't turn on until it has some charge.
it is normal to be in power for eight hours, and nothing has changed ? Red light always on and off screen
rugabella said:
it is normal to be in power for eight hours, and nothing has changed ? Red light always on and off screen
Click to expand...
Click to collapse
Have you tried holding down the power button now?
Johndawolf said:
Have you tried holding down the power button now?
Click to expand...
Click to collapse
yes , and unfortunately nothing happens . problems that can have ? He does not get the charge? because it comes on the same spy and it is always red ? the phone has just three months
for anyone who is interested I solved !!! simultaneously press power button and volume less for about 20 seconds and the phone switches
rugabella said:
for anyone who is interested I solved !!! simultaneously press power button and volume less for about 20 seconds and the phone switches
Click to expand...
Click to collapse
Im dealing with the same problem from morning. Im going to try your solution by 10 minutes.
ijaz1976 said:
Hello to all experts.
1- Accidently my wileyfox storm battery was fully drained at night and i was not at home during that time.
I connected mobile to wall outlet it was showing red colour on home button when connected (as a battery charging indication) but after near about 8 hours i tried to turn it on but no luck. I pressed power button for many seconds, many times but no luck.
Now what should I do to turn on my wileyfox storm.
2- My second question is how to open back cover of my wileyfox storm. i did not find any notch or point to open back cover to see inside.
Thanks in advance.
Click to expand...
Click to collapse
I am no expert, but I've had the same problem after fully running the phone battery down. While looking for an answer I managed resolve the issue by to hold the power down and down array while the phone in chagrining for around 2 minutes and the phone started up, almost by complete accident.
rugabella said:
for anyone who is interested I solved !!! simultaneously press power button and volume less for about 20 seconds and the phone switches
Click to expand...
Click to collapse
Hi rugabella
please guide me
I have same problem
since 17:30 today my storm battery drained and when i put it in charge LED light RED
it not Happened before , until now (20:44) phone is in charge and LED light is red
I tried time to time the key combination you mentioned (Power + volume Down) but nothing happens
now I'm waiting for more time to spent charging
Can you or someone else help me more?
tiosus said:
Hi rugabella
please guide me
I have same problem
since 17:30 today my storm battery drained and when i put it in charge LED light RED
it not Happened before , until now (20:44) phone is in charge and LED light is red
I tried time to time the key combination you mentioned (Power + volume Down) but nothing happens
now I'm waiting for more time to spent charging
Can you or someone else help me more?
Click to expand...
Click to collapse
16hours and still RED light and nothing else
any help!!!!!!!!!!!!!?
tiosus said:
16hours and still RED light and nothing else
any help!!!!!!!!!!!!!?
Click to expand...
Click to collapse
I had the same issue you are having, battery ran down to empty, charge light would always be red no matter how long it was plugged in, slow charge, fast charge, holding down the power button, even with the inclusion of the vol down, nothing worked.
I fixed it by opening up the phone and disconnecting then reconnecting the the battery. After doing so the phone started to properly charge (phone booted up and displayed the battery animation). Everything now operates as normal, though I won't be letting it drain to 0% again, that's for sure.
If you're able to, give it a shot and hopefully it will do the trick for you as well (though I'm probably way to late).
Hello to all
I again have the same problem, the battery of my storm has fully discharged, but although is it charging for many hours the LED light is always red and the phone will not turn on. This time even while holding together power button and volume less nothing is happening.
Can anyone help me and tell me how I can fix ?
Level1imp how did you open the phone to disconnect the battery ?
level1imp said:
I had the same issue you are having, battery ran down to empty, charge light would always be red no matter how long it was plugged in, slow charge, fast charge, holding down the power button, even with the inclusion of the vol down, nothing worked.
I fixed it by opening up the phone and disconnecting then reconnecting the the battery. After doing so the phone started to properly charge (phone booted up and displayed the battery animation). Everything now operates as normal, though I won't be letting it drain to 0% again, that's for sure.
If you're able to, give it a shot and hopefully it will do the trick for you as well (though I'm probably way to late).
Click to expand...
Click to collapse
How i did you open up the phone? I'm struggeling with it
Thank you soooo much!!!!
rugabella said:
for anyone who is interested I solved !!! simultaneously press power button and volume less for about 20 seconds and the phone switches
Click to expand...
Click to collapse
After I read your message here, I've tried and finally I solved this problem in my phone.
I was getting crazy because there isn't place to fix this phone in my country and the company Wileyfox wanted me to send my phone to someone in europe to them send to Wilefox to fix it. I've spoke with the company today to see what could they do for me and the solution they gave to me was this and to I try to open the back by myself. But this last solution it isn't a solution because would make me loose the garantee. Why the technician didn't told me about this solution? I'm so disappointed with them.
hi i have a wileyfox storm it is not going on when i press power button .now i connect with wall charger so it show a red circle on the bottom and phone show logo on and of .how can i put it on
This works!!
For anyone who needs it, this also works on wileyfox swift 2
Had this too, but solved
Just had this problem occur on my Wileyfox Swift 2 Plus. Completely drained, left on charge for 4h but it got 0% charged in that time.
For me, hooking it up to a slightly stronger power source (5V 2.1A) USB port of my power bank,
in combination with Power + Volume UP
Got me to a boot screen I'd never seen before.
Hit Fast Boot, it looked like it just turned off again but a few seconds later I saw the normal boot screen pop up

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