Water Damage Boots To Black Screen - Samsung Galaxy A51 Questions & Answers

So I've had this phone water damaged. I left it in rice in a very hot room for maybe 4 months. It boots into recovery and download mode fine and the screen works well. But when i boot it normally after flashing fresh Stock Firmware (It didn't boot before just stuck on splash). I plug phone into charge and the Samsung charger plug sound plays. That means its actually loaded into Android. Any ideas how to fix this?
I thought of replacing the LCD but since Download and Recovery shows up fine then it shouldn't be it?

You need to pull the battery asap after water exposure. The phone needed to come apart right away. Perhaps the mobo has conformal coating but the connectors do not have any protection.
You need to pull the whole thing apart, inspect and dry it completely.
Its long term prospects aren't good.

blackhawk said:
You need to pull the battery asap after water exposure. The phone needed to come apart right away. Perhaps the mobo has conformal coating but the connectors do not have any protection.
You need to pull the whole thing apart, inspect and dry it completely.
Its long term prospects aren't good.
Click to expand...
Click to collapse
It's been dried for a whole 2 or 3 months in rice and a hot room. Phone boots fine now but only to Download mode or Recovery mode. Screen doesn't work past splashscreen when booting

blackhawk said:
You need to pull the battery asap after water exposure. The phone needed to come apart right away. Perhaps the mobo has conformal coating but the connectors do not have any protection.
You need to pull the whole thing apart, inspect and dry it completely.
Its long term prospects aren't good.
Click to expand...
Click to collapse
It's been a few months after it's been water damaged I havent run it since BTW

Hamisxa said:
It's been a few months after it's been water damaged I havent run it since BTW
Click to expand...
Click to collapse
You mean you tore it down right away?

blackhawk said:
You mean you tore it down right away?
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Click to collapse
No I mean i tossed it in rice for 2 months in a very hot room and left it there. I tried to take the back off but it started crackling so I didn't try to take it further. I thought the battery might blow up.

Hamisxa said:
No I mean i tossed it in rice for 2 months in a very hot room and left it there. I tried to take the back off but it started crackling so I didn't try to take it further. I thought the battery might blow up.
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Click to collapse
The battery won't blow up unless you get it really hot. You can't leave water in these devices at all, every minute counts especially if it has a battery.
Sorry but the rice method doesn't cut it.
My Buds case fell in my coffee and sunk to the bottom. Fished it out and tore it apart on the spot. Flushed with RO water, then rinsed with anhydrous isopropyl alcohol using centrifugal force to get as much of the alcohol off (no compressed air in the car) then let it dry.
Amazingly it still is working a year latter; I got lucky, but I was also acted fast and did the right things.
Aside from nose diving it into my full cup of coffee.
I wouldn't invest to much money into this device. Water damaged electronics are insidiously unpredictable and there's no time limit to when it will fail again even if you do manage to get it working.
Dirt minimum; take it apart and carefully inspect it. Pull the micro ribbon connectors and inspect the contacts. Make sure they're completely dry.
Anhydrous isopropyl alcohol (99%) can be used to displaced water. Be careful around LCDs if present as it can poison the liquid crystals.

Exactly the same story with a smartphone at work. The phone starts into recovery with no prolem, the display is working fine. But when I start the system it only shows me the "Samsung Galaxy A51" lettering, "Secured by Knox" and the "Powered by Android". After booting the display remains black but the device gives a feedback when pressing the volume up/down buttons.
Is there any way to reinstall the whole OS? Or maybe authorize the Fingerprint of my PC to check if there's any display output via scrcpy?

Folsense said:
Exactly the same story with a smartphone at work. The phone starts into recovery with no prolem, the display is working fine. But when I start the system it only shows me the "Samsung Galaxy A51" lettering, "Secured by Knox" and the "Powered by Android". After booting the display remains black but the device gives a feedback when pressing the volume up/down buttons.
Is there any way to reinstall the whole OS? Or maybe authorize the Fingerprint of my PC to check if there's any display output via scrcpy?
Click to expand...
Click to collapse
It could one of many possible damaged contact surfaces or shorted/open surface mount devices including cpu or ram flat packs or mobo traces. Even after the water is gone if it wasn't promptly removed* damage will continue to surface long after the incident.
You need to tear it apart asap. Even a few minutes may be too long.
Water damage electronics are insidious failures waiting to happen.
Cut your loses.
*prompt removal is no guarentee but greatly improves chances of success.

Related

Possibly water damaged Captivate half-working

I may have possibly water damaged my Captivate last night. It was in my pocket when water spilled on my lap, and I didn't immediately take it out. Very stupid of me. The USB port was open so I'm thinking liquid may have gotten into there... Also, there were water beads on the inside of the camera lens.
My recourse was to take it apart and try to let it dry out. Initially it wouldn't do anything upon being plugged in to the charger, so naturally I thought it was bricked. I've let it sit all day on a dry window sill next to the radiator. After putting the battery back in and plugging it in a little bit ago, the phone surprisingly booted up. Here's where I'm at now:
The phone boots normally, however if I plug it in to the charger I get an error stating Battery Temperature too high or something, so charging is paused. Does anybody know what this indicates?
Secondly, after being on for a minute or so, the screen gets screwy. Dark transparent overlays start flashing over everything and it gets unresponsive... I haven't left it on like this long b/c I was afraid something worse would happen - I usually rip the battery out of the back to shut it off.
My phones currently pulled apart and drying in the window sill. Whatever water got on/in it is not visibly there, however I understand some parts might still be wet.
Any advice? Also, I believe the water indicator on the battery and near the pins where the battery dock in the phone are both fine. They're white squares and haven't changed color. Any chance there are other indicators?
The phone isn't insured and I bought it back in August. Would warranty possibly cover this or will they know about the water damage?
jmusso said:
I may have possibly water damaged my Captivate last night. It was in my pocket when water spilled on my lap, and I didn't immediately take it out. Very stupid of me. The USB port was open so I'm thinking liquid may have gotten into there... Also, there were water beads on the inside of the camera lens.
My recourse was to take it apart and try to let it dry out. Initially it wouldn't do anything upon being plugged in to the charger, so naturally I thought it was bricked. I've let it sit all day on a dry window sill next to the radiator. After putting the battery back in and plugging it in a little bit ago, the phone surprisingly booted up. Here's where I'm at now:
The phone boots normally, however if I plug it in to the charger I get an error stating Battery Temperature too high or something, so charging is paused. Does anybody know what this indicates?
Secondly, after being on for a minute or so, the screen gets screwy. Dark transparent overlays start flashing over everything and it gets unresponsive... I haven't left it on like this long b/c I was afraid something worse would happen - I usually rip the battery out of the back to shut it off.
My phones currently pulled apart and drying in the window sill. Whatever water got on/in it is not visibly there, however I understand some parts might still be wet.
Any advice? Also, I believe the water indicator on the battery and near the pins where the battery dock in the phone are both fine. They're white squares and haven't changed color. Any chance there are other indicators?
The phone isn't insured and I bought it back in August. Would warranty possibly cover this or will they know about the water damage?
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Click to collapse
well you want to put in rice, so that the moisture is gone
rice it for sure. but warranty WILL not cover it UNLESS the tabs on the battery and phone are white (It might not have gotten wet if it was in your pocket)
if they are still white, or if your phone is white and battery red (then buy another battery) and get to the store and tell them you don't know what is wrong with it. The only indication that it is water damaged is if it is red and those tags are notoriously faulty so you could always argue your way through it if you have an account in good standing.
best of luck.
I know someone who "claimed' that insurance was supposed to be added to the phone when he got it and noticed that the person didn't do it properly (the guy was new so it helped his cause) and the manager of the cor store told him that they'd do a courtesy replacement and charged him the 125$ for a new device.
you could go that route should you need too...
I don't have access to rice at the moment... Would it do any good even if I absolutely can see no water anywhere in/on the phone?
Am I doing my phone any harm/potential harm by trying to turn it on every once in a while, or should I just let it be for a few days?
Take the phone apart and focus the strongest fan you have on it over night. It's probably best to not turn it on for awhile. Maybe if you focus a blow drier on it for perhaps several hours, air will find flow through the small openings within the case.
You may not be able to dry some parts of it unless you do a complete dismantle, but that may require special tools
Consider shipping it to get repaired only as a last resort, as I've read some bad reports about that.
Rice or some other dessicant is the way to go - it will pull moisture out. Also, turning it on (even putting the battery in) is bad - you are powering circuits and possibly creating shorts where water is present. You may have already done permanent damage.
If you get electronics wet, the best course of action is to remove the battery and put it in a bag of rice for a few days.
Now that You have the phone apart get an alcohol pad and gentley scrub the main board. Sometimes when liquid touches the main board you will get a white looking residue. If you see anything like that simply wipe it off. I dropped my phone into a trash can at a very popular teriyaki restaurant here in Las Vegas my phone was submerged into a deep bath of teriyaki sauce. I quickly pulled the phone from the can and wiped it down vigorously. I was excited to see that it was initially working unfortunately this was not the case by the time I got home. The phone would not turn on for a whole week, until I decided that I was going to open her up. I found a tutorial on line describing a complete break down of the captivate. Upon opening it I found I was able to see exactly where the teriyaki had interacted with the electronics due to the remnants of an oxidized white film that was present on various parts of the main board. I grabbed a alcohol pad out of my first aid kit and began wiping it down to remove all of the white stuff,put the phone back together and to my surprise it turned on. Hope this helps!
Thanks for the info guys.
How would I go about getting to the "main board"? Taking out the battery and looking inside it only reveals where the battery connects, where the SD card and sim cards can go... I'm assuming if I remove the little screws around that fixture I can get to the "main board"?
I think I can see some minor corrosion around where the sim card connects, but I think I *should* be able to clean that with some alcohol.
The phone seems to be working fine (I've yet to put my SIM back in it, though, so no idea if the corrosion around there is affecting it at all). I just booted it up and was able to get on the web (wifi), run apps, everything just fine. Didn't get the flashy screens I mentioned earlier. However, if I plug in the USB charger, it still gives me the temperature error. I didn't keep it plugged in, however it did make me realize something:
The errors I was getting before, where the screen went all wacky, only happened if the phone was plugged in to the wall. Is it possible my battery is busted, or do you think the USB charger is busted? Remember that port was open when it happened.
Any thoughts? New battery? Or do you think I won't be able to charge the phone via USB charger any more?
jmusso said:
I don't have access to rice at the moment... Would it do any good even if I absolutely can see no water anywhere in/on the phone?
Am I doing my phone any harm/potential harm by trying to turn it on every once in a while, or should I just let it be for a few days?
Click to expand...
Click to collapse
yes you are, because if there is water or moisture internal, it can short circuit, also rice will help dry up the phone completely
jmusso said:
Thanks for the info guys.
How would I go about getting to the "main board"? Taking out the battery and looking inside it only reveals where the battery connects, where the SD card and sim cards can go... I'm assuming if I remove the little screws around that fixture I can get to the "main board"?
I think I can see some minor corrosion around where the sim card connects, but I think I *should* be able to clean that with some alcohol.
The phone seems to be working fine (I've yet to put my SIM back in it, though, so no idea if the corrosion around there is affecting it at all). I just booted it up and was able to get on the web (wifi), run apps, everything just fine. Didn't get the flashy screens I mentioned earlier. However, if I plug in the USB charger, it still gives me the temperature error. I didn't keep it plugged in, however it did make me realize something:
The errors I was getting before, where the screen went all wacky, only happened if the phone was plugged in to the wall. Is it possible my battery is busted, or do you think the USB charger is busted? Remember that port was open when it happened.
Any thoughts? New battery? Or do you think I won't be able to charge the phone via USB charger any more?
Click to expand...
Click to collapse
If you've never taken apart a smart phone before, and reading your first question, I'm going to assume that's the case, then I strongly advise you not attempt it unless you are willing to either A) buy a replacement after you break it or B) invest time/money into repairing mistakes you've made. This phone is not as difficult to disassemble as some, but I wouldn't want to break that $150 amoled screen.
No, removing the screws will not simply get you to the mainboard. It's more complicated and nuanced than that.
I'm a new user so I can't post the link but if you google Tech Republic Captivate tear down [/B]there is a website that will show you step by step how take the phone apart. There are two screws under the clip you pull down to take the back cover off. Be careful when pulling it back to expose the screws. I tugged on it pretty hard with no problems, but I imagine it could be broken if you pull too hard. Good Luck! It's actually really easy to take apart and the various ribbon connectors on the main board are really easy to unplug and plug back in after cleaning it.
So what do you guys think I should do if I'm still getting the battery error with the thermometer and yellow caution sign? Buy a new battery? Or do you think its the USB jack? Has anybody seen this before - the battery was working fine as long as it was not charging.
I'm trying to decide between a) buying a new battery, or b) buying a wall-mounted battery charger since the USB won't charge the phone.
Anybody have any experience?
Meguro2006 said:
I'm a new user so I can't post the link but if you google Tech Republic Captivate tear down [/B]there is a website that will show you step by step how take the phone apart. There are two screws under the clip you pull down to take the back cover off. Be careful when pulling it back to expose the screws. I tugged on it pretty hard with no problems, but I imagine it could be broken if you pull too hard. Good Luck! It's actually really easy to take apart and the various ribbon connectors on the main board are really easy to unplug and plug back in after cleaning it.
Click to expand...
Click to collapse
I think you need to be careful about who you encourage to dissect their device. This guy asked how to get to the mainboard. Clearly, he hasn't opened a smart phone before. Telling him it's "actually really easy" is disingenuous at best. Performing smart phone repairs properly requires experience. I'm certainly not suggesting that noobs not try to fix their phones, only that they are made fully aware of the risks.
My Captivate was fully submerged in dirty water. I followed some instructions online and it's been working fine for over a month now. If your water-detection stickers are already red anyway, and rice isn't working, I recommend it:
1) Remove battery, SIM card, SD card
2) Submerge in a bowl of distilled water and gently agitate. This helps clean the insides. Distilled water (not spring water) does not conduct electricity.
3) Next, submerge in a bowl of high-quality rubbing alcohol (~95% pure) and gently agitate. Rubbing alcohol displaces water, removes corrosion, and evaporates quickly. (It's also flammable, so have good ventilation and no open flames nearby)
4) Leave it out to dry for two days or until it no longer smells of alcohol.
BTW I wouldn't dry it too close to a radiator, the heat may damage it.
jatkins09 said:
If you've never taken apart a smart phone before, and reading your first question, I'm going to assume that's the case, then I strongly advise you not attempt it unless you are willing to either A) buy a replacement after you break it or B) invest time/money into repairing mistakes you've made. This phone is not as difficult to disassemble as some, but I wouldn't want to break that $150 amoled screen.
No, removing the screws will not simply get you to the mainboard. It's more complicated and nuanced than that.
Click to expand...
Click to collapse
Not really. Once the screws are removed..including the two hidden by the battery cover lock slider...you can carefully pry the cover apart using your fingernail to get to the the internals. I have done it several times and am no expert by any means. Just don't yank like you are opening a present on Christmas morning.
Although I am mystified by the op stating they have no access to rice?! That should always be the second thing one does after a moisture incident...right after pulling the battery and sim. I guess in this case a trip to the store with a couple bucks may have pushed that to step three though..
sent from my captivate disguised as an i9000 running cyanogen

[Q] A "washed" through laundry HTC Diamond

Hello,
by a rediculous accident I forgot my HTC Diamond in the pocket of my jeans when running the laundry :-(
Afterwards, I opened the cover, took out the battery and let the phone dry out for 2 days. Now I've put it back together, and connected it to the charger. The "ring" is flashing, so the battery is charging but the phone itself is not starting and the display remains completely black, not even the vibration kick on starting...
Is there anything I could do? Or perhaps there is a chance to get out some photos I have shot earlier, would also be something...
ive heard that taking apart your phone and leaving the parts in rice can help (because the rice absorbs moisture)
Off topic:
I read one Desire went through a washing sequence in a washing machine in Desire spesific forum and now this?
Is this a new hobby? I mean... washing smartphone
darkman088 said:
Or perhaps there is a chance to get out some photos I have shot earlier, would also be something...
Click to expand...
Click to collapse
If the photos are on your micro sd card, you may be able to plug that into an adapter and plug it into your PC and gain access to them that way. Just be sure that micro sd card is thoroughly dry before doing so.
WORKING !!!
Hello,
thanks for the replies... This morning the phone booted!!! I was able to download the photos!!! But the screen has stains, obviously the remaining water.
PLEASE advise on how to dry that thing completely !!!
I think that I'm gonna pass on the rice thing.
@aaa - YOU ARE A JUNKA$$ !!! You think that's really funny?!? Especially when I'm currently TIGHT on budget and need the money for other things and the next phone is planned no earlier than Christmas... I'm hesitating whether you're a real human being...
You can dry it completely in an oven for three hours at thirty degrees or so. I've done this three times. If you have a fan forced oven, just turn the fans on, that'll be enough.
A safer way (if you can obtain it) is to leave the phone for 24 hours in a bowl of dessicant silica gel. You'll often get a small packet of silica gel when buying new electronics or other moisture-affected things. That small packet is enough, just put it in an airtight bag and leave it for 24 hours.
The next step would be disassembly and a thorough swabbing with denatured alcohol, but that's pretty extreme and only needed when the device isn't booting.
Some LCDs are hard to get moisture out of, some are not. Leaving the phone with the silica gel for longer will have a better effect. As the previous poster mentioned, rice also works (quite well), but takes longer than silica.
Good luck with it!
Another thin that will absorb moisture is common table salt. Take the phone apart very carefully. Remove battery first, make sure you're grounded as well.
Hello everybody.
thanks a lot for the numerous advices...
Unfortunately, I have more to report...
The phone dried out and booted 2 or 3 days later, as I said. The stains on the display disappeared as by magic one day later.
Everything was fine for a week until I launched the camera 2 days ago. The backlight of the display went off and came back only after removing the batter for 15 minutes.
Now the backlight is going off pretty often, sometimes it requires to remove the battery 1-2 times before it starts working again and yesterday it happened that it got activated again when I got a call...
Any ideas please?
And also the phone keeps overheating from time to time without real load (GPS or wi-fi) which dries out the battery. But I had this problem also before the laundry
Sounds like that moisture in the LCD unit left a bit of residue and is shorting the backlight somewhere.
Only option there would be to disassemble and swab the LCD boards and cables/connectors with denatured alcohol.
Alternatively, a new LCD unit should fix the problem if it persists, just make sure you alcohol swab the connectors before plugging them back in
Someone also mentioned drying out in salt before. While that does work, salt is extremely corrosive on solder and SMCs, so I wouldn't recommend that route.
i heard hair dryers are the bomb at the screen moisture, just take off all that you can and blow dry it.
I just don't understand your refusal on using white rice. It have saved countless phones.
Uncooked white rice is VERY mosture negative. Just put layer of rice, put your phone on it, cover it completely with white rice, seal it in. Ziploc could work too.
In a day or two your partially dry phone will be bone-dry. If it was soaked still you could first try to shake out water as much as can, soak it in distilled water to remove minerals, then white rice it for 3 to 5 days.
I had this problem with my Touch Diamond. Everything worked, but while i was trying to dry it I broke one of the battery "hinges" but the phone still worked after except only with black screen. The best thing to do probably is just leave it for a couple of days and hopefully your phone will be back!
XXCoder said:
I just don't understand your refusal on using white rice. It have saved countless phones.
Uncooked white rice is VERY mosture negative. Just put layer of rice, put your phone on it, cover it completely with white rice, seal it in. Ziploc could work too.
In a day or two your partially dry phone will be bone-dry. If it was soaked still you could first try to shake out water as much as can, soak it in distilled water to remove minerals, then white rice it for 3 to 5 days.
Click to expand...
Click to collapse
exactly what ive said. ive read everywhere that rice is one of the best solutions out there
Like was said before you most likely have some corrosion on a few contacts, if you have about 6 bucks you can spare you can get residue free contact cleaner in an aerosol at radio shack or any electronics store and save yourself having to scrub each contact and connector. Just tear the phone down down spray all the contacts and connectors with contact cleaner let it sit for a few then spray it down with air duster to get any thats get under the resistors, in the connectors, etc that hasn't dried; let it sit till you're positive everythings dry and put it back together. Does the same thing as alcohol just alot less scrubbing.
Sent from my i897 w/Andromeda 3, Suckerpunch kernel, & 1.3Ghz OC using Tegrak.
Hello,
thanks for narrowing the problem down.
But for me it looks like something different, because:
1) I have been using the phone for 1 week without any problems and it got screwed after I've launched the camera app for the first time
2) The backlight works when I power on the phone. But its stop is event-triggered, like when I launch the sound or video player or when I get a call... Similar events would trigger the backlight back on.
Perhaps reflashing the software could fix that?
I went to a shop today and put another battery. The phone booted, anyway without any backlight, twice...
At least the device is still alive.
There probably was a tiny water bubble and it messed with phone when you turned camera on.
darkman088 said:
Hello,
thanks for narrowing the problem down.
But for me it looks like something different, because:
1) I have been using the phone for 1 week without any problems and it got screwed after I've launched the camera app for the first time
2) The backlight works when I power on the phone. But its stop is event-triggered, like when I launch the sound or video player or when I get a call... Similar events would trigger the backlight back on.
Perhaps reflashing the software could fix that?
I went to a shop today and put another battery. The phone booted, anyway without any backlight, twice...
At least the device is still alive.
Click to expand...
Click to collapse
remove the back cover and battery from the phone, and put everyting in a bowl of rice for a day,. should fix everything,
XXCoder said:
There probably was a tiny water bubble and it messed with phone when you turned camera on.
Click to expand...
Click to collapse
Either that or a short in the cameras circuit from corrosion, either way i'd pull it apart before it gets worse and check it out.
Sent from my i897 w/Andromeda 3, Suckerpunch kernel, & 1.3Ghz OC using Tegrak.

[Q] Water Damaged Nexus 5 Boot Loop Suggestions

Hi all,
First off I would like to thank anyone and everyone that reads this thread, it helps me out if you have any information that could help me out here.
About a week or so ago my girlfriend dropped her Nexus 5 in water, and removed it almost immediately then brought it to me. Sadly the damage was already done and the screen was black. I got the back off and got as much water out as I could shake gently, and the screen still had haptic feedback when I touched it, so I messaged it and it displayed the notification light. This led me to believe the battery was ok, so we left the back off and let it dry for a while, and over time the screen and sound came back. We placed the phone overnight in dry rice, and for the meantime we put her SIM in an old S2. The next morning there was obvious water damage on the screen but less than before, and everything seemed to be working fine, games ran, music played, messages came and went on Hangouts, and when we plugged it in to charge it worked like a charm, so we believed we had gotten lucky, put it back in the rice overnight again and the next day tried putting the SIM card back in the phone.
The Nexus at this point asked to restart and we obliged, but this is when the problem started. It would get to the Google boot screen, hang, then restart, over and over. I tried going into recovery and I could, but no further than that. I am not an expert so don't know what would cause this, but I am led to believe that the battery and everything else is all in working order otherwise it wouldn't have been working and charging while it was on. I wonder if maybe there is a separate part of the phone used for BIOS bootup and it got damaged? Any suggestions or ideas on how to fix the issue would be met with extreme gratitude. Thanks for reading all this.
TL;DR Phone was dropped in water, aired out and worked fine, restarted for SIM card and get stuck in endless boot loop.
QyuBurt said:
Hi all,
First off I would like to thank anyone and everyone that reads this thread, it helps me out if you have any information that could help me out here.
About a week or so ago my girlfriend dropped her Nexus 5 in water, and removed it almost immediately then brought it to me. Sadly the damage was already done and the screen was black. I got the back off and got as much water out as I could shake gently, and the screen still had haptic feedback when I touched it, so I messaged it and it displayed the notification light. This led me to believe the battery was ok, so we left the back off and let it dry for a while, and over time the screen and sound came back. We placed the phone overnight in dry rice, and for the meantime we put her SIM in an old S2. The next morning there was obvious water damage on the screen but less than before, and everything seemed to be working fine, games ran, music played, messages came and went on Hangouts, and when we plugged it in to charge it worked like a charm, so we believed we had gotten lucky, put it back in the rice overnight again and the next day tried putting the SIM card back in the phone.
The Nexus at this point asked to restart and we obliged, but this is when the problem started. It would get to the Google boot screen, hang, then restart, over and over. I tried going into recovery and I could, but no further than that. I am not an expert so don't know what would cause this, but I am led to believe that the battery and everything else is all in working order otherwise it wouldn't have been working and charging while it was on. I wonder if maybe there is a separate part of the phone used for BIOS bootup and it got damaged? Any suggestions or ideas on how to fix the issue would be met with extreme gratitude. Thanks for reading all this.
TL;DR Phone was dropped in water, aired out and worked fine, restarted for SIM card and get stuck in endless boot loop.
Click to expand...
Click to collapse
Take the device apart, remove the motherboard. Get some rubbing alcohol and a tooth brush.
Remove any shields that can be taken off to expose more components. Then start scrubbing!!! Continue until you get all of the green/white corrosion. If there are any black scorch marks on the connections, take a eraser and it will remove the burn mark, then continue to clean with alcohol. Also the flex cable connections would need to be cleaned also.
The next step is up to you, if you feel comfortable with it. Make sure all plastic and rubber pieces are off the motherboard. Then stick it in the oven on 400F for 30 min to reflow some of the solder that may have gotten damaged.
Put back together, you may have to factory reset if the software got corrupted.
It is still highly possible to recover the device.
Good luck!
oOflyeyesOo said:
Take the device apart, remove the motherboard. Get some rubbing alcohol and a tooth brush.
Remove any shields that can be taken off to expose more components. Then start scrubbing!!! Continue until you get all of the green/white corrosion. If there are any black scorch marks on the connections, take a eraser and it will remove the burn mark, then continue to clean with alcohol. Also the flex cable connections would need to be cleaned also.
The next step is up to you, if you feel comfortable with it. Make sure all plastic and rubber pieces are off the motherboard. Then stick it in the oven on 400F for 30 min to reflow some of the solder that may have gotten damaged.
Put back together, you may have to factory reset if the software got corrupted.
It is still highly possible to recover the device.
Good luck!
Click to expand...
Click to collapse
I wouldn't go so far as reflowing solder for a dry-out.
http://www.amazon.com/o/ASIN/B000BXOGNI?tag=adapas02-20
can be attained at your local auto supply, simply disassemble the boards and give them a once-over spray and wipe-down. Reassemble, and then troubleshoot the bootloop, which may require a full stock flash. Good luck!
wideasleep1 said:
I wouldn't go so far as reflowing solder for a dry-out.
http://www.amazon.com/o/ASIN/B000BXOGNI?tag=adapas02-20
can be attained at your local auto supply, simply disassemble the boards and give them a once-over spray and wipe-down. Reassemble, and then troubleshoot the bootloop, which may require a full stock flash. Good luck!
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Click to collapse
I am not reflowing to dry it, sometimes solder on the connections/components need to be reflowed when they got WD or the device will not function correctly.I have seen it more time that I can count.
oOflyeyesOo said:
I am not reflowing to dry it, sometimes solder on the connections/components need to be reflowed when they got WD or the device will not function correctly.I have seen it more time that I can count.
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There wouldn't be solder damage when OP acted almost immediately to dry it out. A cleaning, further drying should be all that's needed. One should NEVER turn on electronics until fully disassembled, cleaned and dried in any event.
wideasleep1 said:
There wouldn't be solder damage when OP acted almost immediately to dry it out. A cleaning, further drying should be all that's needed. One should NEVER turn on electronics until fully disassembled, cleaned and dried in any event.
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The second the device hits air corrosion starts to build. Rice does nothing, it pulls a little bit of the water from the charge port and headset jack, basically what drips out. There is possibility that there is still water inside the device. He needs to open it up to scrub it down with a tooth brush and alcohol at least.The connections may break in time even after cleaning, that is why I suggest a reflow.
oOflyeyesOo said:
The second the device hits air corrosion starts to build. Rice does nothing, it pulls a little bit of the water from the charge port and headset jack, basically what drips out. There is possibility that there is still water inside the device. He needs to open it up to scrub it down with a tooth brush and alcohol at least.The connections may break in time even after cleaning, that is why I suggest a reflow.
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I don't disagree most of this up to the point of reflow, which should be an absolute, last-ditch exercise. If corrosion is a major concern, after cleaning with solvent, a Caig deoxit treatment would be my next advice, but I think reflow is best left to the experienced.
wideasleep1 said:
I don't disagree most of this up to the point of reflow, which should be an absolute, last-ditch exercise. If corrosion is a major concern, after cleaning with solvent, a Caig deoxit treatment would be my next advice, but I think reflow is best left to the experienced.
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Thanks to both of you for your advice on this. I will go and get some of the cleaning spray you suggested and give all the components a good clean, and will look for any scorch marks that may have occured when it was damaged. I would try flashing the OS as well but I'm not entirely sure how to do that when the phone has not been set up for USB Debugging. I attempted to flash it after unlocking the bootloader, but that didn't seem to work either. I will report back when I have performed the steps and let you know if there has been any progress.
Thanks =)
QyuBurt said:
Thanks to both of you for your advice on this. I will go and get some of the cleaning spray you suggested and give all the components a good clean, and will look for any scorch marks that may have occured when it was damaged. I would try flashing the OS as well but I'm not entirely sure how to do that when the phone has not been set up for USB Debugging. I attempted to flash it after unlocking the bootloader, but that didn't seem to work either. I will report back when I have performed the steps and let you know if there has been any progress.
Thanks =)
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http://forum.xda-developers.com/showthread.php?t=2513701
And to the guy above, sorry if it seemed I was arguing. A few too many drinks at that point.

[Q] nexus 5 water damage bootloop

hi, my nexus 5 had water damage and i manager to turn it on into bootloader but when i choose 'Start' then it will keep on looping on the Google logo, i tried multiple ways showed on other thread still no help then i decide to factory reset my nexus 5, same, when in bootloader, i choose recovery mode but it did not go into recovery mode, it come out the Google logo again and keep looping again. any help?
Thanks
Lol dry it out for a few days before powering it on
dicecuber said:
Lol dry it out for a few days before powering it on
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i did use hair dryer blow and leave it untouched a day, not manage to turn on but boot loop..even in recovery mode
lavenzo said:
i did use hair dryer blow and leave it untouched a day, not manage to turn on but boot loop..even in recovery mode
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Lol...are you serious? Don't use a hairdryer
The motherboard fried?
dicecuber said:
The motherboard fried?
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no idea =( no sign of life
sending to repair shop this weekend
Probably not worth it to fix water damage. Better off replacing it
Never power it on immediately after any water damage..
It is best using vacuum cleaner to suck the water or most of the moisture inside the phone and follow with dipping it into a container full of rice for like 2 to 3 days.. you would have much better chances of recovering it back.
There is no easy way out of this, no matter what other guys tell you. You need to open the device, remove the mainboard and carefully inspect it for visible water marks which need to be cleaned away with pure alcohol.
Only after doing so and drying the board, you might have a chance of it working again.
farsight73 said:
Never power it on immediately after any water damage..
It is best using vacuum cleaner to suck the water or most of the moisture inside the phone and follow with dipping it into a container full of rice for like 2 to 3 days.. you would have much better chances of recovering it back.
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leaving it powered on risks of short circuit no?
If you leave it powered on or with the battery connected the end result is massive corrosion from both the impurities in it and the galvanic erosion ( metal + water + electricity ).
The best course of action is to imediately shut it off , open it up and disconnect the battery . Once you've done that , get a container , fill it with the purest iso alcohol you can get ( besides removing impurities it pulls water out if pure enough ) , gently brush the board , then dry it with either a blow dryer or by putting it in a hot , dry place for a few hours.
I've used canned air successfully to blow the moisture from under chips and overall , so that can work too.
The easiest damaged parts are the display ( if water or alcohol gets between layers ) , charging and power circuit ( since there's quite a bit of power flowing through that area ) , as well as RF components since they are under shield cans that might contain the moisture and corrode over time.
Once it starts showing signs of damage it's going to get downhill fast - and repairing it is no longer worth it - you will race to replace components as they fail one by one.

How to check dissembled Pixel 4a Mainboard?

Hi all,
I ditched my phone in water.
I disassembled the whole phone, cleaned everythign with IPA and dried it afterwards. Now I would like to check if the mainboard is still working.
I connected the battery, display and usb port to the mainboard and plugged a charger in -> no response (display black, no vibration, sound etc)
I assume that the batterie is completly dead as it discharged until it turned off.
Is this aready a clear sign for a broken mainboard or does it only boot when fully assembled? Just want to avoid to put more effort into the phone, e.g. replacing the battery etc if its already lost...
Thanks in advance!
Dry for at least 72 hours in a warm dry room with a fan on the mobo. The BGA chipsets can dry slow.
Isopropyl is hygroscopic so it's important to remember it may attract some moisture from the air while drying. Use only >92% or greater, 96% is best. Submerged the board in it for a couple minutes while moving it around.
Battery needs to be charged and good for the phone to boot.
Out of circuit the mobo especially is sensitive to ESD damage. Use your best judgment but more assembled is better than less assembled unless very familiar with the device.
Thanks for the reply! Phone is "drying" for two month now as I was already considering as "lost" after disassembling and no luck with first checks. But before getting the new 6a, I want to give it a last try Was just 7 month old when I dropped it :/
When I plugged the charger in, there was no sign of charging. So not sure if the batterie is broken or if its coming from the board, or both.
A new battery is quite expensive just for a test / to find out more is damaged.
Helikoptermann said:
Thanks for the reply! Phone is "drying" for two month now as I was already considering as "lost" after disassembling and no luck with first checks. But before getting the new 6a, I want to give it a last try Was just 7 month old when I dropped it :/
When I plugged the charger in, there was no sign of charging. So not sure if the batterie is broken or if its coming from the board, or both.
A new battery is quite expensive just for a test / to find out more is damaged.
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If the battery sat near its auto shutdown voltage for 7 months it's DOA.
A charger likely won't supply enough current to boot.
The fact that it does nothing when connected to the charger is a bad sign.
Check for loose connectors, bent connector pins, etc.
Examine the mobo (power section especially) and connector pins closely for corrosion damaged caused by electrolysis.
Since you can't see the BGA pads if there's corrosion there...
Water exposure; power off immediately and pull the battery asap to limit damage. Salt or brine water is a death sentence though.
Anhydrous isopropyl alcohol is an excellent drying agent but it and any solvents can't be used around LCD's; it will irreversibly poison them.
LCD's are vented to atmosphere on the sides...
blackhawk said:
Water exposure; power off immediately and pull the battery asap to limit damage. Salt or brine water is a death sentence though.
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Thats true, happened at work so I could do anything for the whole day and in the evening it was already dead. With some random screen on and offs during the day and "booting into fast mode" or something similar during the day.
Phone was not reacting to switch it off normally, screen was black and buttons did not react either
blackhawk said:
Anhydrous isopropyl alcohol is an excellent drying agent but it and any solvents can't be used around LCD's; it will irreversibly poison them.
LCD's are vented to atmosphere on the sides...
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A thats interesting, I was already thinking that some water went inside the screen. Because I have quite some dark areas on the screen, which increased in size the first days. Looked like water got pulled in. Was hoping that when the phone gets warm again it will disappear...
blackhawk said:
The fact that it does nothing when connected to the charger is a bad sign.
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Yeah, have the same feeling. Very unlucky as it was just rain water in a not perfectly closed rain jacket...
Will check the connectors and cables again but was already quite sure that they are all clean
Helikoptermann said:
Thats true, happened at work so I could do anything for the whole day and in the evening it was already dead. With some random screen on and offs during the day and "booting into fast mode" or something similar during the day.
Phone was not reacting to switch it off normally, screen was black and buttons did not react either
A thats interesting, I was already thinking that some water went inside the screen. Because I have quite some dark areas on the screen, which increased in size the first days. Looked like water got pulled in. Was hoping that when the phone gets warm again it will disappear...
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That sucks. Prompt battery disconnect* can save electronics (flooded cars sometimes too).
LCDs are sort of witchy. The spot may or may not disappear over time. Have an old S4 that got sunbaked while charging. The display had multiple issues, barely usable. Thought it had fried drivers. Strangely the longer it sat unused the better it got. 3 years latter it almost 100%.
*Lol, 3 years ago I dropped my Buds case in a full cup of coffee, cream and sugar of course. It promptly sank to the bottom like a lead weight.
The Li is spot welded in. Immediately tore it apart, flushed with RO water, then with anhydrous isopropyl, allowed to dry for a day.
It's still working normally today. A drank that cup of coffee afterwards too

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