Nexus 5 turns on and randomly turns off in between boot and home screen - Nexus 5 Q&A, Help & Troubleshooting

So I got this used Nexus 5 to play around with and there's an odd issue.
The phone appears to turn on normally and at cold boot it manages to go to the home screen of a freshly flashed slim rom. I can be there for a few seconds, then it'll randomly decide to shut off. I'm not sure but the temperature feeling from the back and screen feels hot to the touch. Meaning cpu temp is going high. My other nexus 5 doesn't appear to have that problem. The battery is acting weird as well. When I had the original battery on there it would just go to the google logo and would shut off right after. Should I plug in a brand new oem battery? I have a knock off battery and it worked fine on my other phone except the capacity was much lower. I thought it might be temperature related so I tried making an aluminium heat sink and thermal paste for the cpu, but nothing changes. I will link to video in a bit. Also the only way the phone responds after is by plugging in the phone cable to any power source. Don't judge the vertical framing it just happened. I tried to replicate it again all normal like and the phone stops at the 4 color dots and the phone shuts down as if the battery was removed. It doesn't respond until plugged into usb power.

https://www.youtube.com/watch?v=4FMvVge9pPs&feature=youtu.be. I can't seem to post links yet, but this shows the issues I'm having.
*temperature seems to be 50c idle on the TWRP screen. While comparing to my other phone which is 30c. That seems off.

update: I fresh installed android 4.0 stock and I have to remove the battery ribbon cable and press it back in to get the phone to go home screen for about 5 seconds. the battery ribbon cable and the whole motherboard does seem to get very hot to the touch. What is happening? What could be eating up. Maybe that's why the phone is trying to shut itself down to prevent overheating damage.

there's no android 4.0 for nexus 5 :V oldest android for N5 is 4.4

Related

Won't power on

My myTouch worked for a really long time, even while overclocked. Today, when I was playing a game (Minecraft) it gets much hotter than normal. So I place it on my fan, just a floor fan, to let it cool down. Once it's cooled down, I resume my game. Out of nowhere, it just freezes and shuts off, then restarts, then turns off again once the BIOS splash goes away. It doesn't power on until I press the power button, then it only runs the BIOS splash and shuts off again. I try again, and it powers on to the boot screen, and then it shuts off again shortly after. I try it again, then just BIOS. And yet again, then a successful boot after letting it charge for about 10 minutes. I take a shower and when I come out it works fine, but 10 seconds into use, while I pressed the Bluetooth notification drawer widget button, it freezes and shuts off. From here on, it won't power on at all. I plug it into computer, nothing. All that works is the dim red LED on the trackpad. I press the power button, trackpad light turns on for a few seconds, then off. I press again, turns on for a second then off. When I hold the power button, the light is on and blinks every 10 seconds. No key combos work. Charge light does not come on when plugged in to either computer or wall charger. Any fix for this?
Not a fun situation, very possible your emmc is fried but there is a chance its just the battery. Let it charge overnight and if possible test a new battery
But there is a high likelihood you're going to need a new logicboard
If you're after a new device I do have a few oneplus one invites left...
Best of luck!
demkantor said:
Not a fun situation, very possible your emmc is fried but there is a chance its just the battery. Let it charge overnight and if possible test a new battery
But there is a high likelihood you're going to need a new logicboard
If you're after a new device I do have a few oneplus one invites left...
Best of luck!
Click to expand...
Click to collapse
I have a very similar problem, i recently came across the mytouch 4g slide in the closet and remembered that it died due to charging overnight, 2-3 years ago lol, well the phone still does what it did after it died, no vibrations screen etc, the only sign of life is the two red lights one at the top left of the screen and the trackpad, could this be just the battery that got fried that night? Should of gotten this fixed those years ago but just got a new phone instead.
Possible but could also be a sign of a bad logic board
I have an extra one if any of you want it, not selling it, I can just mail it to ya, PM me about it, whatever. It's got moderate chips and dents, but works fine except sometimes the soft keys don't always work and you have to restart the phone. It has the latest CWM recovery and the latest 4.4.4 ION ROM. No SD card ships, but baseband and all wireless works, but uh, it's SIM locked and S is still ON. Bootloader is unlocked. I'll give you an extra screen and an extra battery, too.
I fixed the one I posted this thread about after I realized I could buy a new motherboard directly from HTC with a few hidden strings pulled (I'm just that special) and before that I ordered the one I'm talking about now that I'm trying to get rid of on Amazon.
So, yeah. best way to fix one is to get a new motherboard, the one from HTC's old stock warehouse that I got took a week or so to ship, and I cracked the casing opening it and almost ripped a connector ribbon, and I also think that this phone surpasses the G1 as the most mechanically intricate device I've disassembled. I've done a few, but man, this blew the top.

Nexus 5 suddenly shutdowns cold on its own

I had the Nexus 5 since launch and its been working fantastically well until it suddenly shuts down by it self in the last couple of days now
As soon i start the camera app, snapchat, watch you tube or listen music (with screen off). The phone goes blank, shuts down and refuses to boot back unless i plug in the mains usb cable which is absurd as the battery was around 60% and clearly there was enough power left. Strangely the phone forgets all my saved wifi passwords and have to connect manually each time the phone shuts down.
I have tried all assortment of troubleshooting methods such as upgrading and downgrading from KitKat to Lollipop , cleared the cache and running though safe mode and calibrating the battery but the problem stills persists
I did replace the screen back in November 2014 and it was work fine until this week.
I have opened the back casing and checked for anything that might be loose but i cant see anything wrong with the components.
I believe the battery is failing and want to know if i can resolve it from any other methods i haven't tried yet. I will be ordering new battery for nexus 5 and see if it solves the problem.
You might have punctured the battery when removing it when replacing the screen

[Q] Nexus 5 Multiple Problems

I've been using my Nexus 5 for about 5 months now. Recently my phone have been having this "ghost touch" issue. My phone have a cracked screen so maybe that's the problem but I'm not entirely sure. Sometimes the touch screen doesn't work, sometimes it just presses at a spot repeatedly. The second problem is my phone sometimes dies at 80-70% battery if I play a game, use camera, or stream video. When it dies I can't turn it back on as it will die again while rebooting. It can only be turned back on by plugging it to a charger. Third is, when my phone dies or I shut it off, sometimes it will go to the "Android is starting. Optimizing app x of 152.". As I was typing this question, my phone rapidly pressed the recent screen button multiple times. Help is needed as I can't afford a new phone. The battery problem is really getting under my skin as I love to take pictures but I cant really do that properly with my phone connected to a powerbank.
Sounds like a shot battery

G Flex 2 keeps shutting down

I recently dropped my phone on the ground and the glass is now broken. But it worked normally for about 14 days. Then suddenly one day at work it shut down on its own. After that I wasn't able to start it. No reaction for any of the buttons, nor their combinations. Even when I plugged the charger in, no sign of life. I thought it's over.
Then the next day, I plugged the charger in and the screen with 0% battery appeared. So I left it charging, but when I came back to it (20 minutes) it was dead again. Not even the diode indicating it is charging. Again no response for the buttons, nothing. So I tried to disassemble it, disconnected everything. Put it together and viola! The screen indicating 0% battery was there again. I left it like that for a while, and when it was charged a little, I tried to start it. It started and normally worked. At least it seemed to, but after a while (1 - 3 minutes) while I was using it, it went to the dead phone again.
So I discovered, that when I disconnect the battery for a while and then connect it again, I am able to boot the phone. I was even able to do factory reset. I thought I got it and that it was some software fault. However after like 5 minutes (it downloaded all apps, logged to my google account, looked all ok) the screen shut down again and again the phone played dead.
Now I have the phone booted, and charging (almost 100% now). But I guess when I start using it again, it will again go to the dead mode (since it did it everytime after I used it a little, no specific action done, totally random).
I guess it has to be related to the broken glass. Maybe some water or humidity got through it and the phone is trying to save itself from damage by going to the dead mode. It's weird because sometimes (like now) the phone is OK when not used, normally chraging and not shutting down (now it's ON for about 40 minutes), but if it shuts down, it takes about 3 or 4 battery disconnect and connect again, before it boots to the main screen. Sometimes it just dies before the screen, sometimes it dies when I try to plug the charger in, really no idea what causes it.
How should I diagnose it? USB debugging and check the log when using it and when it dies? Or has anyone experienced this too? Or could the battery be damaged? Or can I somewhere set the phone to prevent from selfkilling actions? Today I will try my main board in my friends G Flex 2, to see if it's the board, or something else.
Error log from console before it shut down
mazlixek said:
I recently dropped my phone on the ground and the glass is now broken. But it worked normally for about 14 days. Then suddenly one day at work it shut down on its own. After that I wasn't able to start it. No reaction for any of the buttons, nor their combinations. Even when I plugged the charger in, no sign of life. I thought it's over.
Then the next day, I plugged the charger in and the screen with 0% battery appeared. So I left it charging, but when I came back to it (20 minutes) it was dead again. Not even the diode indicating it is charging. Again no response for the buttons, nothing. So I tried to disassemble it, disconnected everything. Put it together and viola! The screen indicating 0% battery was there again. I left it like that for a while, and when it was charged a little, I tried to start it. It started and normally worked. At least it seemed to, but after a while (1 - 3 minutes) while I was using it, it went to the dead phone again.
So I discovered, that when I disconnect the battery for a while and then connect it again, I am able to boot the phone. I was even able to do factory reset. I thought I got it and that it was some software fault. However after like 5 minutes (it downloaded all apps, logged to my google account, looked all ok) the screen shut down again and again the phone played dead.
Now I have the phone booted, and charging (almost 100% now). But I guess when I start using it again, it will again go to the dead mode (since it did it everytime after I used it a little, no specific action done, totally random).
I guess it has to be related to the broken glass. Maybe some water or humidity got through it and the phone is trying to save itself from damage by going to the dead mode. It's weird because sometimes (like now) the phone is OK when not used, normally chraging and not shutting down (now it's ON for about 40 minutes), but if it shuts down, it takes about 3 or 4 battery disconnect and connect again, before it boots to the main screen. Sometimes it just dies before the screen, sometimes it dies when I try to plug the charger in, really no idea what causes it.
How should I diagnose it? USB debugging and check the log when using it and when it dies? Or has anyone experienced this too? Or could the battery be damaged? Or can I somewhere set the phone to prevent from selfkilling actions? Today I will try my main board in my friends G Flex 2, to see if it's the board, or something else.
Click to expand...
Click to collapse
Adding the error log from console
OK so it was probably mother board fault, so I had to buy a new phone It is like 3 months, and I just yesterday accidentally poured some water on it, so i destroyed another one. It is still in warranty but I guess with water damage there is no warranty. Anyone knows where to find all the water damage indicators? Or is it even possible to make it look like there was no water damage?

redmi3sPrime. Not starting, but showing odd behavior.

Hi,
Phone : RedMi 3S Prime.
Problems observed :
(1)When charger is connected, phone immediately makes short vibrations in a pattern (short-short-long-short).
(2)screen wakes up to battery showing 0%, then in around 5 seconds it jumps to 100%
(3) sometimes shows Mi logo, but does not boot.
(4)power button does not always respond.
(5) At some occasions red led blinks when charger is connected.
(6) Phone booted normally when switched on, after a few days it was kept idle (after a week since this problem started showing) I was able to use it, on battery without a charger connected to it. Now its back to the odd behavior.
I am looking to experiment with this, but have no idea how to. If there are any link suggestions or workflows, kindly help.. thanks in advance.
mayiladan said:
Hi,
Phone : RedMi 3S Prime.
Problems observed :
(1)When charger is connected, phone immediately makes short vibrations in a pattern (short-short-long-short).
(2)screen wakes up to battery showing 0%, then in around 5 seconds it jumps to 100%
(3) sometimes shows Mi logo, but does not boot.
(4)power button does not always respond.
(5) At some occasions red led blinks when charger is connected.
(6) Phone booted normally when switched on, after a few days it was kept idle (after a week since this problem started showing) I was able to use it, on battery without a charger connected to it. Now its back to the odd behavior.
I am looking to experiment with this, but have no idea how to. If there are any link suggestions or workflows, kindly help.. thanks in advance.
Click to expand...
Click to collapse
Seem to me that the battery needs to be replaced.
As for the power button not responding, there may a mixture of water/sweat/oils/dirt/dust that has worked it's way into the power switch and is intermittently interfering with the buttons normal functionality or it may even be stuck/sticking. If that is what is going on, you might be able to fix it by using a cotton ball and alcohol then rubbing over the button to get some alcohol to work it's way in around the button, then repeatedly and quickly tap the power button, then rock it back and forth from one edge to the other, then repeatedly run the tip of your fingernail back and forth quickly across the button, making sure to slide completely across so that your fingernail slides completely off the button so that it tries to "pop" up. Doing this enough should remove enough dirt to allow the button to function normally, if that is the issue. If you can remove the battery, it would be best to remove the battery before forcing alcohol in around the button or let the battery run completely dead before you try it if the battery can't be removed. Then let it dry thoroughly before reinserting the battery or connecting to your charger, the alcohol will evaporate completely away, you just need to give it time to be certain it's all gone before reapplying power to any of the hardware.
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