Database Users

[Q] LG G2 Red Light No Power

Hi All
My friend recently gave me his LG G2 as it had a problem.
What happens is currently if you try and turn on the phone nothing happens. When you plug the phone into the charger the red led blinks and nothing else happens. He told me that he got the phone brand new off eBay and that the problem started after he left the phone plugged in overnight. No software modifications have been done to the phone prior to the red light issue.
After some investigation into the issue i found nothing except another eBay listing with a LG G2 D802 where the guy got water into his phone and it has the exact problem where the phone does not turn on and a red light comes on when attempting to charge the phone. The eBay listing also says that the phone was seen by a service technician who said the circuit board was damaged but is repairable
Before i spend any money buying spare parts does anyone have any idea on what the problem is and whether its worth fixing?
Thanks

Could it be that the motherboard got damaged?

I don't think the mother board got damaged. I had the same problem with both my G2's. (D800 and LS980)
I had changed the motherboard from ls980 to the d800, I connect everything, LCD, digitizer, battery,front and back camera ..etc..
I go to try and power the phone up but nothing happens..
I go to plug in the phone.(Nothing happens)
I use another charger(nothing happens.)
My phone wasn't water damaged though. In your case you could open up your phone and disconnect the battery connector, After about 1-3 minutes connect it back & leave phone alone.(don't try to power up)
I had a problem with one of the phones not having the red LED light coming up to tell nevit was charging. I switch the battery to another bezel & motherboard & it shows 40% battery level.
It definitely worth a try to open your phone & disconnect and connect the battery if the phone was charging one night.. I remember seeing a forum on here that the phone might be still on charging mode or something.
Sent from my LG-D800 using XDA Premium 4 mobile app

Hi,
I have the same problem, the only sign of life is a red flashing led when I try to charge it up.
My lg g2 (D802) did get water damaged tho, however I don't think it has been damaged that bad. When I found it in the watery environment it still worked, but it was quite warm. First hour or so I put in in a towel, because I wasnt home. When I got home I discovered it was dead. Then I put it in rice for two days, but now this problem occurred.
I reconnected the battery (twice) but it didnt change a thing, and now it still won't boot up...
Hopefully someone can help me (or sees this at all),
Thanks in advance

I have the same problem with my G2. I changed the motherboard after it got water damage but nothing else changed. what should i do?

Solution for blinking red error
Hello Guys,
I have the same problem like you others. 8 times red blinks, phone won't charge, PC won't recognize it, dead at all. But I found the solution. There is a short circuit on the moterboard. That can be LCD, digitizer, buttons or anything other. I have unpluged digitizer connector and BOoM!, connected it to charger and turn on with power button. So you guys can test what's making problem on your MB, it can be anythinhg. I hope that will help to someone.
Sorry for bad English.

same thing here
I have an LG G2 that I recently replaced the batter (ordered from ebay). After the install, the phone just blinks the red indicator light. When I hold the power button, it blinks 8 times, pauses then starts over again blinking 8 times and pausing. Please help.

Lore4321nz said:
I have an LG G2 that I recently replaced the batter (ordered from ebay). After the install, the phone just blinks the red indicator light. When I hold the power button, it blinks 8 times, pauses then starts over again blinking 8 times and pausing. Please help.
Click to expand...
Click to collapse
I have the exact same problem. recently bought a new battery, because my original one is increasing in size (very strange) and decreasing in power.
When i put in the new battery the phone doesnt work if i try to turn it on. When i connect the battery to the charger its just the blinking red light...

OrtizG33R44d0 said:
I don't think the mother board got damaged. I had the same problem with both my G2's. (D800 and LS980)
I had changed the motherboard from ls980 to the d800, I connect everything, LCD, digitizer, battery,front and back camera ..etc..
I go to try and power the phone up but nothing happens..
I go to plug in the phone.(Nothing happens)
I use another charger(nothing happens.)
My phone wasn't water damaged though. In your case you could open up your phone and disconnect the battery connector, After about 1-3 minutes connect it back & leave phone alone.(don't try to power up)
I had a problem with one of the phones not having the red LED light coming up to tell nevit was charging. I switch the battery to another bezel & motherboard & it shows 40% battery level.
It definitely worth a try to open your phone & disconnect and connect the battery if the phone was charging one night.. I remember seeing a forum on here that the phone might be still on charging mode or something.
Sent from my LG-D800 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I'm having the exact same problem...working ls980 phone using to restore my D801 motherboard....but have no power.
When I plug the ls980 board back in it works again. Last time my D801 board red led blinked 2x but wouldn't startup with its own battery. How did you fix it?

It is the battery. either the cable is ripped or the battery is at 0 volts I've just tested this on my LS980 using my analyzer to fully charge a battery externally to 100% made it work fine, please check the battery cable its very thin and very easy to rip without knowing it. (I work at a battery store) Hope this helps some of you!

A solution for 8 Red blinks:
If you have 8 Red blinks when you change the screen the Solution is:
The two metal joints from two small boards (besides volume and power button) that connect to the motherboard they should be completely attached to the connector.

[Q] Nexus 4 bricked? Tried everything.

12.

Not everything my friend
Just charge the battery for some HOURS or over the night. All the described symptoms indicate a low battery to me.
cheers

UPDATE:
Just managed to unlock a bootloader in that short period of time i can get to fastboot. But still no change, phone wont stay in fastboot.

greg17477 said:
Not everything my friend
Just charge the battery for some HOURS or over the night. All the described symptoms indicate a low battery to me.
cheers
Click to expand...
Click to collapse
Well, i actaully tried to leave it plugged over night. But i think it stops charging right after the red light dissapears, which happens after 15mins or so after plugging. Btw, i mentioned earlier that battery shows 3.7V when measured with multimeter, so the battery doesn't seem to be the culprit... or does it...?

12

your battery is drained below safe line....to 0%. They warn you NOT to update it with less than 60% battery FOR A REASON!!
Friends case she managed to charge ger asus 7 memopad with non-removable bat to 60% after 8 HOURS, because of a bloatware wakelock drainage to 0% after a factory reset....
If that doesn't work you have to either recharge the battery manually (something like car batteries, you have to unsolder the battery connector because the battery doesnt have 2 gold squares that touch the gold pins like the removable ones, or get a new battery.
Li-Po batteries should never be discharged to 0%, and can make problems if they are not removable (Nexus 4)

Mashed_Potatoes said:
your battery is drained below safe line....to 0%. They warn you NOT to update it with less than 60% battery FOR A REASON!!
Friends case she managed to charge ger asus 7 memopad with non-removable bat to 60% after 8 HOURS, because of a bloatware wakelock drainage to 0% after a factory reset....
If that doesn't work you have to either recharge the battery manually (something like car batteries, you have to unsolder the battery connector because the battery doesnt have 2 gold squares that touch the gold pins like the removable ones, or get a new battery.
Li-Po batteries should never be discharged to 0%, and can make problems if they are not removable (Nexus 4)
Click to expand...
Click to collapse
I did manage to charge it manually with two small wires and an old Nokia charger, when checking battery with multimeter after a few minutes of charging seems to increase voltage. But i guess if the chip on battery is fried there is nothing more i can do.
I will try to leave the phone on charger all night once again, see if that makes a difference, and update if anything changes.

take off the back, disconnect the battery connector wire and connect it again, put it on charger and see if things change

UPDATE:
Leaving it to charge overnight didn't have any effect. Any other suggestions than changing a battery?

Nah, sorry, but i am out of ideas. You basically tried it all :/

Darkis said:
I know there is a lot of threads about bricked N4's, and i can assure you that I have viewed each and every one of them, but i still can't resolve my broblem.
This whole brick situation happened after trying to update to Android 4.3 OTA update, the phone didn't complete the process and turned off, where red light of death happened.
So the scenario goes like this:
If i hold POWER button for ~30s when phone is off charger i only get a Google logo for 2 sec, and phone instantly restarts
Holding PWR+VOL-DOWN buttons when phone is off charger doesn't do anything
Plugging phone to charge (socket or PC) results in solid red light
Holding PWR+VOL-DOWN or PWR+VOL-DOWN+VOL-UP for ~15s makes the red light blink at a steady rate
While continuing to hold the respective buttons and pluging the charger off, and on again gets me to bootloader or download mode (depending on button combo) for ~2s and phone restarts.
I tried removing and inserting the battery 3 times. One time i got blinking red light when plugged the charger in. Second time i got solid red light and third time got solid red light again
I tried charging the battery directly for 15 minutes with old Nokia charger, and it resulted in something different(when i assembled the phone and tried to turn it on with PWR+VOL-DOWN buttons when charger was plugged off, i got to bootloader for 2seconds before phone restarted, i tried to boot second time and the same thing happened, but when i tried it third time i got nothing, just like before) so this was the first time i got into bootloader while not charging a phone.
*My PC seems to pick up the phone for a brief moment when it is in bootloader and starts installing the drivers. Drivers gets installed when i'm in download mode for that brief moment too.
**Phone doesn't get to the white or red battery icon while plugged to charge.
***Solid red light dissapears after charging for ~10mins, but phone won't do anything.
****When measured with a multimeter battery shows 3.7V
I hope someone will be able to help me with this, as it is frustrating as f*ck. I don't have a working warranty, so fixing the N4 isn't an option, and where i live phone repair prices are over the roof (ex. motherboard change for N4 costs ~270$ ).
Click to expand...
Click to collapse
I had the same problem. Kept it on the charger for a whole day and still only the Red Light.
Took it to a local shop and they said there is a short circuit in the antenna
Took it to the LG Service center and they said my motherboard is gone.
Both were costing a bomb to repair and still there was no guarantee.
IMHO, get a new phone.
Sorry

Have you tried charging it with a wireless charging pad? I got mine to boot after I did that. Your battery is drained and it doesn't have enough juice to charge itself.

12

Don't fall for the motherboard dead trick. Just a way to steal your money.... change the battery and never let it go to 1%

12

[Q] NEXUS 4 WATER DAMAGED? PLease Help

Hello everyone,
I was going for a swim in the pool three days ago and have forgotten to put my Nexus 4 in my duffel bag. The phone was submerge along with my swimming short for over 30 seconds :crying:. I dried off the phone, opened it up to removed the battery, and dried it off with a hair blow dryer for five minutes continuously. Then I put my phone in a bowl of rice. Its been two days hoping that the moisture is gone, I plugged it to a wall charger and have gotten the "blinking red light of death". Next, I removed the battery and charge the phone with out it, giving me a boot loader screen with the green android and the Google logo. But putting the battery back and turning it on only giving me that annoying blinking red light. I hope all the phone component is still good. So at this stage can you guys tell me if the battery is dead and would purchasing a new battery resolve this issue? Any input to resolve this red blinking light would be helpful, thank you for reading.

This worked for me:
http://forum.xda-developers.com/nexus-4/general/final-fix-nexus-4-red-light-death-t2250454

tommyga said:
This worked for me:
http://forum.xda-developers.com/nexus-4/general/final-fix-nexus-4-red-light-death-t2250454
Click to expand...
Click to collapse
I have charge twice and installed the battery back and still get the blinking red light. As you have done this before, how did you go about doing it? Was the battery suppose to be "hot" when its being charge? Did you soldered the charging cable "hot and neutral" to the battery positive (+) negative (-) as shown in step 7?

dante510 said:
I have charge twice and installed the battery back and still get the blinking red light. As you have done this before, how did you go about doing it? Was the battery suppose to be "hot" when its being charge? Did you soldered the charging cable "hot and neutral" to the battery positive (+) negative (-) as shown in step 7?
Click to expand...
Click to collapse
I'm not sure the battery was hot during the process #7..
I took some old phone charger, cut the two wires apart (the positive and negative), and just made them touch the relevant spots on the battery (no soldering was made).
Did you wait more than 15 minutes during this charging?

tommyga said:
I'm not sure the battery was hot during the process #7..
I took some old phone charger, cut the two wires apart (the positive and negative), and just made them touch the relevant spots on the battery (no soldering was made).
Did you wait more than 15 minutes during this charging?
Click to expand...
Click to collapse
Thanks for your reply. I also used an old lg charge with the right amount of Voltage ouput. I think it was 5 Volt or something and just split the cable, made it touch the relevant spots and used it electrical tape to secure the the charging charging cable making sure that the wire made contact with the positive and negative spot. Im not sure which cable was positive or negative, so I had to swap cable around and recharge every 15 minutes trial. I know my connection looks messy but thats the best i could do to make sure the make contact at the charging point on the battery. Is this how you do it? lol
[/ATTACH][/ATTACH][/ATTACH]

Basically it seems fine.
There are two more things I recommend trying:
1. Try charging it for 30 minutes.
2. When plugging the battery back, just plug it, and don't screw the two screws of the battery.
Try these two things - and keep updating if the red light still shows

tommyga said:
Basically it seems fine.
There are two more things I recommend trying:
1. Try charging it for 30 minutes.
2. When plugging the battery back, just plug it, and don't screw the two screws of the battery.
Try these two things - and keep updating if the red light still shows
Click to expand...
Click to collapse
I have tried charging twice with 30 minutes cycle on each attempt, and have installed the battery back to the phone without the screw of the battery. I tried turning the phone on by holding down the power button for 10 seconds, but there was no Google logo splash screen. The same thing happen on my second attempt, no Google or boot-loader screen. I plugged in the wall charger and let it sit for over two hour and still cant turn it on, only the blinking red light. Removing the battery, charging directly from the cable, and holding the power volume button down at the same time gave me a boot-loader screen and Google logo but the phone immediately shut off. Any ideas what else I could try? Could you tell me about where my phone is damage base on the picture from my earlier post?

If you see Google's logo, your phone can run fine. The problem is probably the dead battery. Consider replacing it with a new one.

sky0165 said:
If you see Google's logo, your phone can run fine. The problem is probably the dead battery. Consider replacing it with a new one.
Click to expand...
Click to collapse
Thanks i just order a new one yesterday, just thought I give it a shot instead of buying a new phone. Lets hope its as you say. Thanks for your input.

Ordered a new battery, and it booted up fine. The important thing is that the blinking red light of death is gone so far.. thank goodness! Looks like the battery shorted out when my phone was submerge in the water. There is one small yellow streak line on the bottom right of the screen now but I can live with that. Glad nothing else is damage Thank you for all of your help! Cheers!

[SOLVED] Issues after display replacement [LG G2 d802] Red led blinks 8 times + more

I don't know if this is the right section, anyway because it isn't specifically hardware related I posted here... for admins feel free to move in the appropriate thread.
My G2 dropped on the floor and as result I got a complete broken display plus not working touch.
The device, touch apart, worked without issues so as 1st step I made a full backup of sd-like content (music, pictures, etc...) to my laptop.
note: even if touch didn't work I was able to access the device trough adb and a very useful utility (http://marian.schedenig.name/2014/07/03/remote-control-your-android-phone-through-adb/)
Next I ordered a replacement for the display, looked for instructions and changed by myself... and the phone didn't boot or even charge... nothing, the only signal of life was when attached to the wall charger the led blinking in red eight (8) times consecutively then no blink for a second and again blink for 8 times and so on in an infinite loop.
Of course I started to look for solution and tried every kind of combination but none worked.
I started to think that I missed up something during the display replacement or the battery fault or even I fried in some way the motherboard, anyway for what I read it supposed that could be that the battery gone under certain voltage or minimal charge so the motherboard circuit didn't recognize as "good or safe battery", it is simply bypassed by charge circuit.
note: I waited for the new display about 10 days and the device (fully charged) slept (turned off) in a drawer so I don't think it was totally discharged
I disassembled and reassembled again the device but nothing happened so while looking for a solution I saw a video on Youtube (https://www.youtube.com/watch?v=MZwknmWCmOE) solving a issue similar to mine so as instructions I took an old charger (800ma), cut the charger connector and exposed the 2 internal wires (one red and the other gray/black).
Then I opened the device, disconnected the battery and attached directly into the battery connector the two charger wires (in this way mobile motherboard is bypassed).
I used a small piece of tape to stop and make touch laterally the 2 wires to the connector, something like: dark wire -> [ battery connector] <- red wire
Keep in mind that the connector is something very small like (0) where left parenthesis is for dark wire and right parenthesis for the red one.
note: you can't wrong with wires, because the positive (on the battery connector) has a small white triangle.
Of course I found a way to don't move/mess wires before connecting the wall charger... I put another piece of tape at 20cm on the table to keep the cable charger fixed near the phone, then I attached the wall charger...
remember: attach the charger to the wall ONLY when you have finished to place/fix the contacts!
Waited just 1 minute because exposed charger wires was very close and didn't want to fry something... but it was enough!!
Reconnected the battery and voilà the phone turned on!
The phone turned on with almost 80% of charge, all seemed to work... except that I found 2 issues... I suppose because the case didn't match perfectly anymore (I opened the device 4 times and disassembled-reassembled twice)
1st speaker didn't work, so I reopened the device and checked the speaker connector, I discovered that the speaker didn't touch very well so I put a small stripe of tape under the connector (the small vertical green stripe in the lower side of the phone) to lift it and making touch stronger with the speaker module (the black part the come out), here on Youtube for reference: https://www.youtube.com/watch?v=XE2FPmFUrQQ
2nd GPS didn't work very well (discovered after a couple of days) so I reopened the device and applied this solution that worked perfectly: https://www.youtube.com/watch?v=dfS4LpfcLfg
This is my story in the hope to help someone, if you have apparently a total dead phone and the only signal of life is a 8 times blinking red light... now you know what to do!
Regards,
Davide

Thank u for share your story

Congrats on fixing your problem!
suiller said:
The phone turned on with almost 80% of charge, all seemed to work... except that I found 2 issues... I suppose because the case didn't match perfectly anymore (I opened the device 4 times and disassembled-reassembled twice)
Click to expand...
Click to collapse
You mentioned the alignment of the phone wasn't the same as before....
Did your battery swell or change shape at all during this process?
If so could be a sign its on its way out and needs replacement.
A dying G2 lithium ion battery changes physical shape and completely alters the internal alignment of your components.
May be worth an extra 10.00 to replace your battery at this point with a new one

tiguy99 said:
Congrats on fixing your problem!
Click to expand...
Click to collapse
thank you, I was a bit frustrated because I thought to have broken the motherboard, even if it wasn't very easy I didn't surrend and I won!
tiguy99 said:
You mentioned the alignment of the phone wasn't the same as before....
Did your battery swell or change shape at all during this process?
Click to expand...
Click to collapse
I understand what you mean but no I don't think so... it seemed the same size
anyway battery has less than 1 year of life and never showed symptoms or bad behavior, right now is running as before... I can pass easily 24h without recharge

suiller said:
thank you, I was a bit frustrated because I thought to have broken the motherboard, even if it wasn't very easy I didn't surrend and I won!
I understand what you mean but no I don't think so... it seemed the same size
anyway battery has less than 1 year of life and never showed symptoms or bad behavior, right now is running as before... I can pass easily 24h without recharge
Click to expand...
Click to collapse
Sounds good!
Have you found the source of your alignment being off?

tiguy99 said:
Have you found the source of your alignment being off?
Click to expand...
Click to collapse
I checked and found nothing in particular... just a bit near the sim "area", but it seems just a sort of plastic adaptation... as mentioned before I opened, disassembled, reassembled and then closed it 4-5 times (in just few days)

6p strange issue ,not sure if it is looped or not or if battery cable came off intern

Ok so i bought a second nexus 6p from ebay , it was advertised as a new sealed in box device
when i got it it was immediately obvious something was wrong ,the packaging was hard plastic not the embossed cardboard packaging with the "P" stamped in it.
There was some glue on the battery cover and when i weighed the phone it weighed less than my original 6p.
I immediately proceeded to start a return with ebay
but i used the phone for a bit and it seemed to be working ok so i was thinking of just keeping it and asking for a discount but then a few weeks later i was driving and the phone slipped out of my coat pocket and slid in between the drivers seat and the center console.
The phone only fell like all of 6 inches had a TPU case on it ,i was listening to music and it was connected to the radio via bluetooth at the time.
As soon as the phone fell the music stopped ,i picked it up from between the seat and saw that it was off , i tried several times to power it on but it was completely unresponsive no matter how long i held down the power button for , the phone was just charged to 75% before i got in the car and this happened bout 5 minutes into my drive.
When i got home i plugged the phone into the charger and i noticed that upon connecting it to power it immediately showed the google logo and started to boot , but then it goes into bootloop.
If i leave it plugged in it just keeps on looping , as soon as i unplug it it goes off, black screen and i can not get it to do anything.
I never press the power button when i plug it in to the charger and it starts to boot automatically.
I never see the battery charging icon screen at all when i plug it in.
I got refunded for the phone and didn't have to send the device back.
So i am wondering if i should take it to ifixit and have them replace the battery but i am not sure what is causing this issue.
Could it be that the internal battery cable came disconnected when the phone fell(all of 6 inches)
would an internally disconnected battery cable cause this behavior ,( that is my theory anyways since the phone does not loop or do anything at all when not plugged in and when it is plugged in i see no battery charging screen) .
I am guessing that they did a ****ty job refurbishing this phone and cheaped out and used a smaller battery(hence the lighter weight discrepancy) , not only in capacity but also in dimensions and that they did not glue it in good so that when the phone fell the battery slid and shifted inside the phone and came disconnected from the cable internally.
This is only my guess and i do not want to spend $100 to find out if it is correct or not and pay ifixit to change the battery only to find out the phone is bootlooped.
So i am hoping someone here has some insight and can confirm what is going on .
Maybe someone who has changed these batteries before and who has tried connecting the phone to USB while the battery was removed?