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Nexus 5 screen died today + dangerously hot lower screen

Went to unlock my phone this morning off the charger and the screen is totally dead. Couldn't unlock or do anything to it or even see what was going on, called Google and ordered a replacement ASAP.
Went through the not fun task of doing a nandroid backup without seeing what was on the screen and doing some trickery with screenshots then backing up my entire SD card.
However, here's the strange and potentially dangerous thing that I noticed later when I got home this evening. I went to look at the phone and go to a fastboot flash with the factory images and went to touch the bottom of the screen. When I went to do so, to the little bit of the left of the LED light was a SUPER hot portion of the phone. I almost burnt my finger it was so hot.
Not sure what to do about the issue, I feel like if I just call the support line they won't actually take in my concern legitimately. Any suggestions?

thats something quite strange
let us know what google says about RMA and this issue

Agree, maybe it's just your phone, maybe it's all the batch. Which batch/model do you have?
Sent from my Nexus 5 using Tapatalk

kentoe said:
Went to unlock my phone this morning off the charger and the screen is totally dead. Couldn't unlock or do anything to it or even see what was going on, called Google and ordered a replacement ASAP.
Went through the not fun task of doing a nandroid backup without seeing what was on the screen and doing some trickery with screenshots then backing up my entire SD card.
However, here's the strange and potentially dangerous thing that I noticed later when I got home this evening. I went to look at the phone and go to a fastboot flash with the factory images and went to touch the bottom of the screen. When I went to do so, to the little bit of the left of the LED light was a SUPER hot portion of the phone. I almost burnt my finger it was so hot.
Not sure what to do about the issue, I feel like if I just call the support line they won't actually take in my concern legitimately. Any suggestions?
Click to expand...
Click to collapse
On my Transformer Infinity, sometimes the screen won't turn on at all. On a few occasions, if I press Power enough times, I get a glimpse of a message saying the Launcher process has stopped, but then my touchscreen doesn't register any input. The tablet is also sometimes running quite hot at those times. The only way I know to recover from this is press the Power button long enough to force a reboot, then everything is normal. Could this be what's happening? Do you know if the phone is still running under the black screen? Have you tried forcing a reboot, and did it work?
As for the hot phone, I've noticed my N5 does get a bit warm when I'm using it intensively (4G, WiFi, Bluetooth, GPS and screen on all at the same time and in use) but not enough to burn me. Could be hard to tell which component is heating up like that since I think it could be the screen backlight, SoC or battery... Do let us know if you find out more.

meethere said:
thats something quite strange
let us know what google says about RMA and this issue
Click to expand...
Click to collapse
I had called them and reported the screen totally dead with lines streaking vertically and got a new replacement ordered. It wasn't until late last night when I got back and had the screen on in this dead mode that the bottom was extremely hot. I'll have to call them back and let them know
dark_ente said:
Agree, maybe it's just your phone, maybe it's all the batch. Which batch/model do you have?
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
Yeah hopefully, it definitely seems like it could be one of those things that could potentially start fire.The one I have is the LG-D820. Any more info I can provide?
daemonios said:
On my Transformer Infinity, sometimes the screen won't turn on at all. On a few occasions, if I press Power enough times, I get a glimpse of a message saying the Launcher process has stopped, but then my touchscreen doesn't register any input. The tablet is also sometimes running quite hot at those times. The only way I know to recover from this is press the Power button long enough to force a reboot, then everything is normal. Could this be what's happening? Do you know if the phone is still running under the black screen? Have you tried forcing a reboot, and did it work?
As for the hot phone, I've noticed my N5 does get a bit warm when I'm using it intensively (4G, WiFi, Bluetooth, GPS and screen on all at the same time and in use) but not enough to burn me. Could be hard to tell which component is heating up like that since I think it could be the screen backlight, SoC or battery... Do let us know if you find out more.
Click to expand...
Click to collapse
Yeah, no its definitely dead. There were streaked lines across it, rebooted it multiple times. I ended up going into the bootloader and recovery via adb/fastboot and all that jazz. It eventually just would not work now.
In regards to the hot part I definitely think it was the lower part of the screen. It was quite literally half an inch away from the LED to the left. Was super super hot then once I shut the defective screen off (I could tell by the backlit light or whatever) it wasn't hot anymore after a minute or so.

Is it black/white? 16 or 32? When did you get it?
Sent from my Nexus 5 using Tapatalk

dark_ente said:
Is it black/white? 16 or 32? When did you get it?
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
32gb black version. I ordered it immediately when they announced it that day.

mine gets really warm when i'm doing a TWRP backup then it goes into bootloop after and wont cool down. i have to force it to power off from recovery and let it cool, but i've always seen it happen. i wonder if yours was attempting to boot over and over for hours and cooked itself.....? i have a launch day black 32gb too, running Cataclysm with Franco at the moment but it was doing it on rooted stock with stock kernel

I had to send my 19 day old 32Gb Red Nexus 5 in to LG for the same reason. I was using the phone and all of the sudden had vertical lines and the bottom of the screen got burn your fingers hot. Waiting to see what LG does with my phone. The only thin I can figure is the synaptics chip which controls the screen is bad. Its the only thing in that area that could get that hot. I also noticed when I first got my phone the glass in the same area looked like it had a slight wave in it. Didn't think anything of it at the time. I'll let you know how it goes.

Is RMA/replacement applicable for Rooted and unlocked devices?

I don't believe its an issue with developer phones as long as the issue wasn't caused by something you did like brick it by flashing a wrong radio or something like that. It has to be a manufacture defect to get it fixed for free.
Sent from my ME173X using XDA Free mobile app

Bear3825 said:
I don't believe its an issue with developer phones as long as the issue wasn't caused by something you did like brick it by flashing a wrong radio or something like that. It has to be a manufacture defect to get it fixed for free.
Sent from my ME173X using XDA Free mobile app
Click to expand...
Click to collapse
My device issue is related to power button. there is no software issue.
The power button is rattling since from the purchase of the device.
Hope my device gets repaired.

Like I said. Hardware issues that are production faults should be covered.
Sent from my ME173X using XDA Free mobile app

[Q] Nexus 5 exposed to water

Hello Guys
A while ago i received my N5 and i really enjoyed it! 2 days, i drop the thing in the toilet. :crying:
Okay so my insurance wont cover it and the phone has dryed in Rice and i followed all the advices that were online.
Tho i couldnt remove the batteri and i know this is a crucial point since the current+water will destroy the circuits.
Now my phone either wont start, or sometimes it will try to boot showing the google logo and then crashing (it cant enter the OS).
Is it worth trying to repair the thing? I dont think it will be a problem for me to change a circuit board og replace another part, but since i dont have any experience with phones i dont know what part i should start with.
The phone costs 580 dollars here in Denmark where i live.
Is it worth it ?
Regards Jesper

You can open it up, get some rubbing alcohol and submerge the board into the rubbing alcohol. Use a soft tooth brush and scrub the board. Usually the board gets corrosion/dirt from the water. Once thoroughly clean put a blow dryer to it (use medium to no heat. DO NOT PUT THE BATTERY IN THE ALCOHOL. ONLY THE BOARD!
I've tried this before and it worked like a charm when my Galaxy Nexus had water damage.
Sent from my Nexus 5 using XDA Premium 4 mobile app

OuncE718 said:
You can open it up, get some rubbing alcohol and submerge the board into the rubbing alcohol. Use a soft tooth brush and scrub the board. Usually the board gets corrosion/dirt from the water. Once thoroughly clean put a blow dryer to it (use medium to no heat. DO NOT PUT THE BATTERY IN THE ALCOHOL. ONLY THE BOARD!
I've tried this before and it worked like a charm when my Galaxy Nexus had water damage.
Sent from my Nexus 5 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Thanks ! I will grab a repar kit tomorrow and then try what you suggested! sounds like a good idea.
regards

---------- Post added at 12:18 PM ---------- Previous post was at 12:16 PM ----------
ProfessorJ said:
Thanks ! I will grab a repar kit tomorrow and then try what you suggested! sounds like a good idea.
regards
Click to expand...
Click to collapse
You're welcome. You can watch a few videos on YouTube to see what I mean.
Sent from my Nexus 5 using XDA Premium 4 mobile app

OuncE718 said:
---------- Post added at 12:18 PM ---------- Previous post was at 12:16 PM ----------
You're welcome. You can watch a few videos on YouTube to see what I mean.
Sent from my Nexus 5 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Out of curiosity could you link a video? doesnt have to be the N5 Board

ProfessorJ said:
Hello Guys
A while ago i received my N5 and i really enjoyed it! 2 days, i drop the thing in the toilet. :crying:
Okay so my insurance wont cover it and the phone has dryed in Rice and i followed all the advices that were online.
Tho i couldnt remove the batteri and i know this is a crucial point since the current+water will destroy the circuits.
Now my phone either wont start, or sometimes it will try to boot showing the google logo and then crashing (it cant enter the OS).
Is it worth trying to repair the thing? I dont think it will be a problem for me to change a circuit board og replace another part, but since i dont have any experience with phones i dont know what part i should start with.
The phone costs 580 dollars here in Denmark where i live.
Is it worth it ?
Regards Jesper
Click to expand...
Click to collapse
As soon as you dropped it in water you should have turned it off and left it off for days and possibly even took a hairdryer to it or let it sit in front of the heat vent.

Number one mistake is trying to turn it on. If anybody else drops the nexus in water. Because it has no removable battery cover. Rice won't do the trick. It would take way too long and the water would have already rusted the metal components and trashed all the pop connectors. If you drop the phone is water. Quickly take the entire phone apart. Than put all the pieces in rice. That will allow the rice to actually absorb the left over water. YouTube "nexus 5 tear down". Its always a good thing to know how to do this.
Sent from my Nexus 5 using xda app-developers app

I just finished assembling the Nexus again and im a very happy man!
After disasembling the phone i found that the top board was very teared by the water and it was clear how some of the sockets had poor or no connection.
I used pure alchol (Dunno what its called in english) and a small toothbrush to clean the board. I dryed the board with a hair dryer on cold setting to avoid over heating the CPU parts. Now the phone works! and it doesnt look like it has any pearment faults or flaws. Even the display is normal and all my previous settings and the OS was intact. Thanks for the help everybody! and yes the best thing to do is remove the powersource and dry the boards individually if exposed to water
Best regards Jesper

ProfessorJ said:
I just finished assembling the Nexus again and im a very happy man!
After disasembling the phone i found that the top board was very teared by the water and it was clear how some of the sockets had poor or no connection.
I used pure alchol (Dunno what its called in english) and a small toothbrush to clean the board. I dryed the board with a hair dryer on cold setting to avoid over heating the CPU parts. Now the phone works! and it doesnt look like it has any pearment faults or flaws. Even the display is normal and all my previous settings and the OS was intact. Thanks for the help everybody! and yes the best thing to do is remove the powersource and dry the boards individually if exposed to water
Best regards Jesper
Click to expand...
Click to collapse
Bravo!
Sent from my Nexus 5 using xda app-developers app

ProfessorJ said:
I just finished assembling the Nexus again and im a very happy man!
After disasembling the phone i found that the top board was very teared by the water and it was clear how some of the sockets had poor or no connection.
I used pure alchol (Dunno what its called in english) and a small toothbrush to clean the board. I dryed the board with a hair dryer on cold setting to avoid over heating the CPU parts. Now the phone works! and it doesnt look like it has any pearment faults or flaws. Even the display is normal and all my previous settings and the OS was intact. Thanks for the help everybody! and yes the best thing to do is remove the powersource and dry the boards individually if exposed to water
Best regards Jesper
Click to expand...
Click to collapse
I'm glad I could help. Now please help me and hit the thanks button.
Sent from my Nexus 5 using XDA Premium 4 mobile app

Hey guys. I followed the instructions and have gotten my phone to power. Problem is when it goes from the power up screen that say "Google" to the colored balls, the balls freeze and it goes back to "Google" and freezing there. Any ideas on what I can do to get it to boot?
I just need it to boot long enough to retrieve my pictures and this hot chick's number I got right before the phone was dropped in the pool. Thanks.
edit: When I hold Volume Down/Power, I can get it to the bootloader. Anything I can do from here to salvage my stuff? I'm not familiar with bootloader options. Plugged into my computer, I can hear my PC make the noise as though it's connected which typically then leads to the phone's drive being accessible on the computer however it then immediately makes the noise of the phone being disconnected.

I believe I am having the same problem as you. I briefly dropped it into a creek for no more than a few seconds. That was enough to make the display unresponsive to touch. I was able to power down and quickly did so.
Unfortunately I wasn't near any rice immediately (motorcycle) so I put the phone in my mesh jacket in 100F weather and hoped for the best. I left it off at this point. When I got home I turned it back on (stupid I know) and the N5 didn't boot, only stopped at "Google" boot. I powered down the phone and rebooted, this time it worked. A quick checkup showed the external speaker didn't work for Play music, but did work for T-mobile visual voicemail. Also, the earpiece didn't work when I attempted to make calls.
At this point I realize I probably screwed up the phone big time. Once I realized not all components were working I put the phone in a ziplock bag with brown rice new from the store. I guess I'll let it sit for 48 hours and then attempt again. If it doesn't work, I'll attempt taking the phone apart and cleaning each part. And I'm really only going to attempt that because this phone isn't even paid off!!
These phones need to be made tougher! I am losing hope that there's any chance of my phone surviving at this point.
jaymzb0nd said:
Hey guys. I followed the instructions and have gotten my phone to power. Problem is when it goes from the power up screen that say "Google" to the colored balls, the balls freeze and it goes back to "Google" and freezing there. Any ideas on what I can do to get it to boot?
I just need it to boot long enough to retrieve my pictures and this hot chick's number I got right before the phone was dropped in the pool. Thanks.
edit: When I hold Volume Down/Power, I can get it to the bootloader. Anything I can do from here to salvage my stuff? I'm not familiar with bootloader options. Plugged into my computer, I can hear my PC make the noise as though it's connected which typically then leads to the phone's drive being accessible on the computer however it then immediately makes the noise of the phone being disconnected.
Click to expand...
Click to collapse

Nexus 5 Water damaged
OuncE718 said:
You can open it up, get some rubbing alcohol and submerge the board into the rubbing alcohol. Use a soft tooth brush and scrub the board. Usually the board gets corrosion/dirt from the water. Once thoroughly clean put a blow dryer to it (use medium to no heat. DO NOT PUT THE BATTERY IN THE ALCOHOL. ONLY THE BOARD!
I've tried this before and it worked like a charm when my Galaxy Nexus had water damage.
Sent from my Nexus 5 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I dropped my nexus 5 in the pool while I was on vacation. When i came home i clean all the parts with rubbing alcohol, my phone worked! A day later i tried again but my phone froze on the start-up screen (with the magical floaty balls) and i haven't been able to turn on my phone since i got it to work. What should i do? is it worth saving? PLEASE HELP!!!:crying::crying::crying:

Nexus 5 Water damaged
Hi guyz,
I need some help, lately my nexus 5 was been water damaged. I immediately follow OuncE718 suggestion but I still experiencing problem. When I press on the phone I can feel the vibration but Google-boot logo will not display and it will only display a white-dim light in the bottom part of the screen. I tried to connect it in a Windows computer it will be recognised as a Nexus 5 phone. Does it mean I had to replace my LCD.?
John
Cheers

tolmike23 said:
Hi guyz,
I need some help, lately my nexus 5 was been water damaged. I immediately follow OuncE718 suggestion but I still experiencing problem. When I press on the phone I can feel the vibration but Google-boot logo will not display and it will only display a white-dim light in the bottom part of the screen. I tried to connect it in a Windows computer it will be recognised as a Nexus 5 phone. Does it mean I had to replace my LCD.?
John
Cheers
Click to expand...
Click to collapse
Who knows what damage did the water do? If the corrosion sets in, your device will be hosed for sure.
It's really a fools errand to fix water damaged phones as no one can be sure the extent of the damage.
If you take it to a service centre, they'll most probably replace the lcd + mobo which will cost a bomb.
- Sent from an IceCold Hammerhead!

vin4yak said:
Who knows what damage did the water do? If the corrosion sets in, your device will be hosed for sure.
It's really a fools errand to fix water damaged phones as no one can be sure the extent of the damage.
If you take it to a service centre, they'll most probably replace the lcd + mobo which will cost a bomb.
- Sent from an IceCold Hammerhead!
Click to expand...
Click to collapse
Thanks vin4yak I probably buy a new LCD as I have no choice it is really a bomb!.

tolmike23 said:
Thanks vin4yak I probably buy a new LCD as I have no choice it is really a bomb!.
Click to expand...
Click to collapse
If you buy a new LCD, how will you know the Motherboard still works? Then what if you have to buy new motherboard?
Cut your losses. Replace the whole phone. Then get insurance

This ^
Spending money on a water damaged device is usually money wasted. Cause there's usually more things wrecked you find out along the way.
Save the money to go towards a new device.

I had the same problem, I used all the methods that I've read with no solution, my last hope is that the battery got damaged, is there a chance that maybe the battery is the problem? I can get a replacement for 20 dollars, but what do you think? thanks

saman0suke1 said:
I had the same problem, I used all the methods that I've read with no solution, my last hope is that the battery got damaged, is there a chance that maybe the battery is the problem? I can get a replacement for 20 dollars, but what do you think? thanks
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?p=56142150

Phone Responds, Screen Doesn't turn on HELP

Hey Guys!
I was wiping my phone with lysol wet wipes to clean it today and let it dry for a bit. When I picked it up it worked fine but the power button wasn't very responsive (Didn't register few times). Later on today I picked my phone up and it wouldn't turn on . At first I thought it was the power button but that works fine. I can hear my phones click and can even take a screenshot, but the screen doesn't show anything it is just black. Any help?

You mat have fried it by getting it wet I'm afraid.
I'd get it off and get it in a bag of rice for a day or 2.

KJ said:
You mat have fried it by getting it wet I'm afraid.
I'd get it off and get it in a bag of rice for a day or 2.
Click to expand...
Click to collapse
Phone works fine however. It shows up on my computer, and i can view the screen via [email protected]

gigamage said:
Phone works fine however. It shows up on my computer, and i can view the screen via [email protected]
Click to expand...
Click to collapse
I'd let it dry out overnight and hope for the best. Sounds like your screen got fried

jd1639 said:
I'd let it dry out overnight and hope for the best. Sounds like your screen got fried
Click to expand...
Click to collapse
any need to put it in rice or is it just fine normally ?

Its too late for rice by now. Damage is done. Sorry.
Sent from my Nexus 5 using Tapatalk

Nexus 5
gigamage said:
Hey Guys!
I was wiping my phone with lysol wet wipes to clean it today and let it dry for a bit. When I picked it up it worked fine but the power button wasn't very responsive (Didn't register few times). Later on today I picked my phone up and it wouldn't turn on . At first I thought it was the power button but that works fine. I can hear my phones click and can even take a screenshot, but the screen doesn't show anything it is just black. Any help?
Click to expand...
Click to collapse
Hey, man I'm having the exact same problem. I thinks it's a problem that some Nexus have because I found this video on youtube and its very similar to mine: youtube. com/watch?v=V6PtbuImXUs
No my screen it does turns on and not just stays all black, but it stays like with a lof of little dots like when there's no signal on a tv. It has been like this for over a month. I'm talking with the guys of LG for a warranty :/ Best of luck, bro! If you find any other solution, I'd be glad to know.

i left it in rice yesterday, and will take it out in a day. Will report back!

So i took it out of the rice, and put the phone back together. Nexus 5 got really hot when i tried to power it on so i just took out the battery plug to avoid any more damage. Any advice on what to do next?

gigamage said:
So i took it out of the rice, and put the phone back together. Nexus 5 got really hot when i tried to power it on so i just took out the battery plug to avoid any more damage. Any advice on what to do next?
Click to expand...
Click to collapse
Visit the nearest LG service centre and let them have a look at your device and then proceed accordingly.
- Sent from an IceCold Hammerhead!

vin4yak said:
Visit the nearest LG service centre and let them have a look at your device and then proceed accordingly.
- Sent from an IceCold Hammerhead!
Click to expand...
Click to collapse
I don't think LG would help much in this situation... They'll make me pay more than the phone costs.

gigamage said:
I don't think LG would help much in this situation... They'll make me pay more than the phone costs.
Click to expand...
Click to collapse
The display is fried.. Possibly, the battery is affected as well by looking at your previous comment.
All you can do is, replace the damaged parts which might cost you a bomb. However, instead of doing it yourself, let LG take a look at your device first and get a quote from them! There's no harm in getting one. You will just need to pay the labour charges incurred for opening up your device and examining it.
- Sent from an IceCold Hammerhead!

quick update: I was able to flash a rom using wug fresh and it boots normally. I can take screenshots, open the camera and take pictures, speaker works fine. I'm guessing this is only a display problem now? any ideas on anything I need to do in order to test other hardware areas to check damage?

[Q] nexus 5 waterdamage

Hi, my nexus 5 was washed for about five minutes before I realized what had happened. After about a week of drying I got the red light when I plug it in. I then cleaned it with 91% alcohol and bought a new battery. The red light is gone but it only shows a charge while usb is connected. After unplugging it shuts off. I can replug and get to the android screen but the only option that is in green is the start icon. The other options just go to google screen and then black screen. Also it is saying my phone status is locked on the bottom of droid screen. I bought it from tmobile and warranty is now void. Is my phone done for or possibly able to be revived? Any help is greatly appreciated

Better off putting money towards a new phone rather than fixing water damage

dicecuber said:
Better off putting money towards a new phone rather than fixing water damage
Click to expand...
Click to collapse
That's true, but that may take a bit. Also, I'd atleast like to be sure this one can be thrown away without a guilty conscience lol

nexus 5 waterdamage
Can someone please help me with my previous post? Any feedback is greatly appreciated

There's no way to tell what is damaged. Your best bet is to save your money and buy a new phone.
Sent from my Nexus 9 using XDA Free mobile app

Seems like deja vu

Water damaged Z3

Hi friends, today I was on the pool and I decided to make some videos underwater after that I cleaned the phone with clear water and after 10 minutes the screen doesnt react to my touches... The phone its in rice right now with the flaps are opened... Any suggestions to save it? ?
Sorry for my bad English

Mr.Jay said:
Hi friends, today I was on the pool and I decided to make some videos underwater after that I cleaned the phone with clear water and after 10 minutes the screen doesnt react to my touches... The phone its in rice right now with the flaps are opened... Any suggestions to save it? ?
Sorry for my bad English
Click to expand...
Click to collapse
Send it to Sony right away. They'll sort you out with a replacement/repair.
Sent from my OnePlus3 using XDA Labs

humzaahmed155 said:
Send it to Sony right away. They'll sort you out with a replacement/repair.
Sent from my OnePlus3 using XDA Labs
Click to expand...
Click to collapse
I turned it on and the screen it's working, but SIM Card not and when I lock the phone after a few minutes the phone turns off by itself...
Right now I'm on Linux ROM on locked bootloader, should I install stock ROM before send it to the Sony repair service?
Sent from my Xperia Z3

Mr.Jay said:
I turned it on and the screen it's working, but SIM Card not and when I lock the phone after a few minutes the phone turns off by itself...
Right now I'm on Linux ROM on locked bootloader, should I install stock ROM before send it to the Sony repair service?
Click to expand...
Click to collapse
Restore the phone to stock and send it to Sony, it may be a gamble if you have unlocked the bootloader before however. Make sure it doesn't die while restoring!
Sent from my OnePlus3 using XDA Labs

It doesnt really matter if it die or not its water damaged anyway.. They should replace or repair it
Odoslané z D6603 pomocou Tapatalku

Mr.Jay said:
I turned it on and the screen it's working, but SIM Card not and when I lock the phone after a few minutes the phone turns off by itself...
Right now I'm on Linux ROM on locked bootloader, should I install stock ROM before send it to the Sony repair service?
Sent from my Xperia Z3
Click to expand...
Click to collapse
Depending on your repair center there could be charges

if it dies, in opinion, if under warranty, it would be good for you.

Lots of people have a waterdamaged Z3 after contact with water allthough it is advertised as a waterproof Phone ??
A friend of mine took it's Z3 to the pool to take some pictures in the water and killed the lcd after some pictures.
Not so waterproof after all.
In your case your motherboard got damaged, the motherboard probably gets so hot from the shortened components it shuts itself down. Is the back of the Phone really hot just before it powers off ?
Water itself doesn't kill your Phone, it is water in combination with courant.
The biggest fault most people make when there Phone had a contact with water is trying to power it back on to see if it is still working.
The Phone powers itself off to protect the motherboard from damage when it is short circuit by water.
By trying to power it back on immediatly after the waterdamage , you put courant on the shortened circuit and most likely burn out a component.
Best way to threat a Phone after waterdamage is to take it apart as far as possible and put the parts on a hot plate ( or other heat source) at about 55 degrees Celsius for half an hour.
Afterwards clean away the waterresidu with IPA and a toothbrush before re-assembling the Phone.
Grtz...
Acryllium