Galaxy Note 4 N910C battery temperature too low ! - Galaxy Note 4 Q&A, Help & Troubleshooting

Hi all. My wife has a Note 4 and our children wasted water on it . We dried the the phone and after 3 days powered on. No damage at all but later we saw that when she wanted to charge it a message appeared on the screen saying that the battery temperature is too low. We ordered a wireless charger but the same message on the phone. I readed some forum and xda gived the answer. I dont want to disassemby the phone and wanted to know if someone can modify something in the kernel or something else to fool the phone to not read the thermistor value that is -20 C.

No one dont have a clue ?

I took my hearth in the teeth and disassembled the phone. Man... its a hell to separate the screen and motherboard from casing but i succeded. After that the water damage was all over the motherboard. I have took a toothbrush and technical alcohol and cleaned all. After that blowed with my heatgun to ged dry and now i have a working charging phone. Here are some photos in case you need some informations.

scamex said:
I took my hearth in the teeth and disassembled the phone. Man... its a hell to separate the screen and motherboard from casing but i succeded. After that the water damage was all over the motherboard. I have took a toothbrush and technical alcohol and cleaned all. After that blowed with my heatgun to ged dry and now i have a working charging phone. Here are some photos in case you need some informations.
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Click to collapse
I'm impressed you gave it a go! Never have seen that warning.
Sent from my SM-N910T using XDA Free mobile app

Related

My HD dropped in the water ... HELP

My HD dropped in the water. I dissembly it and let it dry for 3 days. Battery was only 30% charged. After 3 days when I switched it on it worked fine for 2 days but now it switched off and is not switching on again . I replaced battery but nothing happened. Any help ...
Normally speaking electronics would be able to handle the water if dried thoroughly and as quickly as possible (using a hairdryer is recommended) and it's the battery which dies on the spot and can actually explode. In your case tho it worked for 2 days after, so that's quite lucky.
If you haven't done it yet, there's a link in the wiki to the technical service manual which shows how to disassemble the phone to it's smallest parts. If you're up to it, you could see if there's anything turning brown\reddish. If so (or not) you could try clean everything as best possible (perhaps with some alcohol) and then try make use of your warranty...
Could very well be the powerswitch itself which is just sticking tho..
so sorry for you man!
That's too bad. I dunno if this will help you at this point since it's already been several days since it fell in the water, but I read that if you drop your phone in water, you should take whatever you can apart, dry them the best you can, and then submerge all of the parts in dry, uncooked rice. This is supposed to absorb all of the moisture from the parts. I actually used this technique once when my old phone fell in water and it worked perfectly.
I know this won't help you at this point, but it may help others...good luck.
BMW^Z4 said:
My HD dropped in the water. I dissembly it and let it dry for 3 days. Battery was only 30% charged. After 3 days when I switched it on it worked fine for 2 days but now it switched off and is not switching on again . I replaced battery but nothing happened. Any help ...
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Click to collapse
Just a word of thumb to all people. Once the phone / battery has been submerged in water you need to discard the battery right away. Never use a battery that has been exposed to water again in your phone. That is how you fry a phone. I bet if you would have used another battery in your phone it might still work.
Too late for BMW^Z4, but to others:
If it was dropped in dirty or especially salty water, after taking it apart, before drying it, you may want to submerge/rinse it in even more clean water. Distilled water would be even better.
Any left over residue (especially salt) will accelerate corrosion of contacts and leads and could indeed cause it too fail a few days later.
Buy another one
AllTheWay said:
Just a word of thumb to all people. Once the phone / battery has been submerged in water you need to discard the battery right away. Never use a battery that has been exposed to water again in your phone. That is how you fry a phone. I bet if you would have used another battery in your phone it might still work.
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Click to collapse
Which is why I said:
'If so (or not) you could try clean everything as best possible (perhaps with some alcohol) and then try make use of your warranty...'
If you take it back to the store and they (HTC) see you've used it as a submersible they'll turn you down and charge you for the repairs..
I dropped my phone in toilet too. Was in back pocket. I heard a clunk and turned around and noticed it was my phone. I quickly removed it. Took cover, battery, sim and sd card out and dried it with tissue. Then i used those super powerful Dyson heated hand driers to dry it as much as possible. It happened Monday night and I still have not tried putting in the battery. Now I don't know if I should try the battery or just buy a new one from the posts up. I am dreading it if it does not work. I would hate to have to buy another HD as they are so expensive. I guess toilet water is not considered clean. Hope no corrosion.
A friend send I should leave it overnight in white spirit but i did not trust him.
Hoping all is well.....
So sorry to hear this.
In another forum, somone accidentally pour coffee on his Athena.
Some one had suggested in another forum that you bury your HD with rice as the later has the moisture absorbing property. Of course, if it is dirty, you should wash it with clean water first.
I would leave it for a few days to let any water completely evaporate before trying on.
I think there may be hope still. Let's keep our finger cross.
tboy2000 said:
A friend send I should leave it overnight in white spirit but i did not trust him.
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Click to collapse
Great way to dissolve the remains of your phone Hope your friend wasn't serious.
Unless he meant alcohol. He said he used to do it with laptops when they were sent in to repair to him.
What do you guys think? Should I try inserting my battery in again or not even try it and just buy a brand new battery?
tboy2000 said:
Unless he meant alcohol. He said he used to do it with laptops when they were sent in to repair to him.
What do you guys think? Should I try inserting my battery in again or not even try it and just buy a brand new battery?
Click to expand...
Click to collapse
A couple people above you specificly stated to NOT use a battery that has suffered water damage. Get a new battery or risk frying your phone for good.
3 days
3 days may have not been enough unless you left it in a hot dry place. I once put an old nokia phone in the washing machine. When it came out it was full of water and the water had shorted and turned it off (obviously). I wrapped it in a couple of layers of toilet roll and pushed it down the back of the radiator. Water dropped out the bottom and steam went out from the top. This ensures there is no water left. Next (when fully dry) take some sandpaper to the battery connections in the phone and the battery. Water can oxidise the heads and you may not be getting a good connection. Try again and try a friends battery if that does not work.
Good luck (if its not already too late)
i think is too late but....
the better way to avoid definitive damages was an immediate extraction of battery and cards, rinsing in distilled water to avoid corrosion or salt deposition and put on gentle warm hair flux for a long long time.
polish any visible contact with very soft paper and replace with a new battery
pray if you believe and try to turn on
let us know good luck
giano
eaglesteve said:
Some one had suggested in another forum that you bury your HD with rice as the later has the moisture absorbing property. Of course, if it is dirty, you should wash it with clean water first.
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Click to collapse
This is a very good idea! The rice will definitely absorb the moisture.
tboy2000 said:
Unless he meant alcohol. He said he used to do it with laptops when they were sent in to repair to him.
What do you guys think? Should I try inserting my battery in again or not even try it and just buy a brand new battery?
Click to expand...
Click to collapse
http://video.about.com/cellphones/Revive-Waterlogged-Cell-Phone.htm
Check out that video for more information. I don't know if it will help but they don't mention about getting a new battery.
However I have heard differing reports.
tboy2000 said:
I dropped my phone in toilet too. ... I guess toilet water is not considered clean.
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Click to collapse
I guess that depends if it was before or after....
Seriously, while urine is salty, conductive and corrosive, the actual water used in the toilet is in fact as clean as that out of your kitchen tap.
If you took it out that quickly, and if it was clean barely conductive water, the battery may not only not be damaged, it may still hold a charge. If you have a multimeter, and you can measure between 3 to 4 Volt, I am fairly sure the battery is fine. Though I am not taking responsibility....
Phone in water
Hi guys,
i just read the HTC water story. Clean it first with pure water (best distilled water) and then use pure alcohol and submerge the electroncis in it.
The water at first replaces the dirt water and washes away particles or solids. As water takes long time to dry alcohol is used to replace the water completely. Alcohol has also a much lower conductivity - therefore avoiding shortened circuits due to salts or similar.
Hope this gives some clarification...worked once in a museum where we had mobiles and they pretty regularly fell into the toilet
Have fun with your HTC,
Nils
I used thoses Dyson fast hand dryers - the ones where you dip your hands in and out. After seeing the video I hope I have not done more damage. I was in a public toilet when it happened so had no access to distilled water, alcohol or rice.
I will find out tomorrow if my phone works and will let everyone know. Fingers crossed.
I have already started looking online for a cheap secondhand HD so if anyone knows of one let me know. London based. I guess I don't have much condidence in the phone working.
I got you beat on that one, don't ask how, but I got coffee cream (liquid) on my HD. Broke it down to component level, cleaned, reassembled and everything is working fine. No corrosion, no battery loss. Luck of the draw I suppose. Now I always have HD in protective case.

HD2 in Washing Machine(Very Desperate!...Please Help!!!)

Hi guys,
i accidentally left my HTC HD2 in my jeans,which i put in my washing machine.It spent 15 mins on full cycle,after which i managed to figure out my disastrous blunder and pull my HD2 and its batt out. Im extremely desperate to restore life back into my phone.I know HTC will not repair it since all 3 water indicators are pink. From a few online tips, ive taken apart the housing and the main LCM Module. I have placed these two parts in a container of rice. I have not stripped it to the bare parts as i fear i might ruin it further. Moreover, i have not submerged it in alcohol yet. the only thing ive done is flush out the soap with water(did that only for abt 10 secs though...is it enough?) and put it in rice. Its been 2 hours since ive put in in the rice. Im going to leave it in the rice for abt 2-3 days before turning it on(hopefully it does...).I really need help fast guys. Should i use alcohol NOW before putting in rice?...Should i strip it to the bare essentials?...Should i use a vacuum cleaner?...if anyone can help,please do.Im really desperate and worried here.I really love my phone...and please do not ask me why i did this effing mistake...im still hating myself more than ever in my life for leaving my HD2 in my jeans.tks alot for your time and i look forward to your suggestions.tks again.
PS:Also, after i pulled my phone out,there didnt seem to be any patches or bubbles of water under the screen.Does that mean the whole screen is flooded or no water went inside?...And i do see water inside the camera.So is the camera dead forever?tks
Well,
i once found a Nokia without a battery in a roadside-stream of water... after drying and powering it on it worked flawless...
the real thing you have to worry about will be the water in the cam module. i have no clue as to how get it out. i once had water in the speaker of a very expensive babysitter-device. i never got it out. never. it stayed in there for a year or more. it was toilet water. very nice.
what happens to your leo when it is in contact with water while the battery is connected? do you know that?
well, if not, this is what i know: the electrical current will eventually short some circuits and thus might break them. if you are lucky the shorts will not break anything. if you are not lucky, something will be f****.
then, the energy, metal and water will lead to some "galvanizing" effect i have observed before, meaning, some circuits on the board may build some micro-connections with a whitish coating. what exactly happens there is beyond my knowledge. i have seen it on some devices which had been exposed to water and energy for a while. i could still fix them by scraping (yes, indeed) that off with a micro screw driver, being extremely careful not to harm any print circuit or smd-parts. that is a tough nut to achieve, for real. its not easy.
I am unsure, how the CPU is soldered onto the mainboard. there is a guy here who created some heatsink for those who had broken solderpoints and heat problems. he had said that, if you want to take off the chip you need break it because there is some epoxy around it. that would mean its connections (the little ball solderings) are waterproof. that would already mean you only have to spend attention to the surroundings. that is very relieving.
you might want to check the Internet for a replacement camera module if you don't figure out how to get the water out.
Make sure you keep your impatience under control and don't power on the device with the water still in the cam. it will do damage. the cam has electrical connections too, remember.
If i was in your situation i would assume the phone lost and use it to experiment a little. this will eventually help people here.
what i would do is the following: disassemble completely.
take all parts that can withstand a certain amount of heat and put it in an oven.
power on the oven with not more than 40 degrees Celsius. make sure not to put it under more heat-stress as it will loosen the solderpoints at about 60 degrees i think, maybe even at lower degrees. i am unsure.
warm it up for a while so that excess water dries away fast.
then check the mainboard and other parts for hidden spaces where water could have remained unseen (e.g. the camera).
then check for the witish coating, some hard to see, nearly transparent layers of water and/or soap residue. i am nearly sure that this witish coating i once observed came from high chalk (calcicated) water. this would be removable physically (scraping) or with citric acid and a soft cloth.
now, what to do with the screen? well, unsure here. check for water. if you think its very dry just leave it and connect it.
if it contains water i would probabyl also just try to let it dry. i cannot really advise here since i have not disassembled the hd2 yet.
i only know that replacement screens are not too expensive. you should possibly buy a new one rather then risking to further damage the phone with invisible shorts.
i need to cook for my wife now, hope i could give you some input mate.
good luck with your device. bad story man. bad story...
try to put for 24h into an ermetic box (closed), with salt in lower part and rice on the upper part (1/4 salt, 1/4 rice, phone, 1/4 empty) and close the box
this method can remove the major part of umidity
you can try for 3/4 days replacing salt and rice every day and cleaning the ermetic box
you can try too with a little oven for 10/15/20 minutes (max 60° Celsius and without battery of course) but i think that salt and rice is a better method
of course if you're able to open the HD2 (i done it 2 times and it's not so easy), you can use an alcoholic solution to clean chips and remove oxide (i use a Flux NO CLEAN)
DO NOT POWER ON PHONE UNTIL IT'S NOT FULLY DRY
Update
Hi,
my phone seems dry now(after 2 days of drying).I have not disassembled it completely though. The LCM module doesnt show any signs of corrosion,A few contacts and wires look okay.Not sure of the condition inside the module. Before waiting it out for another day or two, can i ask if i can use denatured alcohol to flush out any impurities or residue left by the laundry soap? Will it do any good or will it do any harm? cus im worried the alcohol might wet the phone again,now that it is dry,or maybe spoil some components. Also,may i ask if any data loss on the ROM or any damage to the cpu is likely?Tks alot.
I dropped a old cell phone in water and this was the guide i used to bring it back to life...well most of that guide anyway as well as a few other notes I picked up.
1st.) you should never try and turn the phone on intill it has had time to dry, (48 hours min)
2nd.) take apart as carefully and best you can..so that you uncover as much of the phone as you can
3rd.) dont lay the phone flat. stand it inside a cup and pour rice over it till it covers it.
I had to let my phone sit for almost a week and tried it after two days and every day after that. On the third day it turned on but still acted really odd, with each day it acted better and better. finally after six days it was back to its old self.
Please also know to not use a heat source like an over, microwave or hair dryer. If you do use a hair dryer ONLY use the "cool" setting. Hot air can make it more difficult for you to get it back on its feet. You can use rubbing alcohol to try and clean up any residue left behind by the laundry soap. I've seen sites say to submerge your phone in alcohol but i would suggest to use a q-tip and wipe the inside clean as best as you can. Make sure you do this well, the alcohol will not harm the phone farther but its the minerals or other deposits from the detergent that will.
If its available, you should use an alcohol concentration of 95% rather than rubbing alcohol that usually contains only 70%.
I hope this helps you as it helped me. I was lost when it happened and didn't know what to do. I pieced together this method from different instructions found online and it worked for me perfect. If all else fails you can call t-mobile and do whats called an out of warranty exchange. Each phone will have a different out of warranty exchange price but I had to do this once with a old phone I had and at the time it was only $100 for that model phone (htc mt3gs). It could be much more, like i said it all depends on the phone.
htccraze said:
I dropped a old cell phone in water and this was the guide i used to bring it back to life...well most of that guide anyway as well as a few other notes I picked up.
1st.) you should never try and turn the phone on intill it has had time to dry, (48 hours min)
2nd.) take apart as carefully and best you can..so that you uncover as much of the phone as you can
3rd.) dont lay the phone flat. stand it inside a cup and pour rice over it till it covers it.
I had to let my phone sit for almost a week and tried it after two days and every day after that. On the third day it turned on but still acted really odd, with each day it acted better and better. finally after six days it was back to its old self.
Please also know to not use a heat source like an over, microwave or hair dryer. If you do use a hair dryer ONLY use the "cool" setting. Hot air can make it more difficult for you to get it back on its feet. You can use rubbing alcohol to try and clean up any residue left behind by the laundry soap. I've seen sites say to submerge your phone in alcohol but i would suggest to use a q-tip and wipe the inside clean as best as you can. Make sure you do this well, the alcohol will not harm the phone farther but its the minerals or other deposits from the detergent that will.
If its available, you should use an alcohol concentration of 95% rather than rubbing alcohol that usually contains only 70%.
I hope this helps you as it helped me. I was lost when it happened and didn't know what to do. I pieced together this method from different instructions found online and it worked for me perfect. If all else fails you can call t-mobile and do whats called an out of warranty exchange. Each phone will have a different out of warranty exchange price but I had to do this once with a old phone I had and at the time it was only $100 for that model phone (htc mt3gs). It could be much more, like i said it all depends on the phone.
Click to expand...
Click to collapse
thanks alot for the detailed post.I will definitely follow all the instructions in the above posts.I have already done most of them.I just have to clean my phone with the alcohol. Regarding the warranty exchange, there are many problems.Firstly,im not using T-Mobile,im actually in Singapore and my operator did provide a 1 year warranty,but sadly the warranty expired 2 months ago.Moreover,all the 3 water indicators and blazing red,and while unscrewing the modules,the 'warranty void' sticker was also torn through...so yep,im left with myself and the help of the wonderful members here.tks alot for your help so far.ill report back in 2 days time,when i power up my phone.
The phone that I sent back was the phone that had water damage. Four months after I took mine for a swim my charger port broke. I told them that the phone works fine but it does have water damage. I'm not sure why they didn't charge me the $100 they said because my water damage indicators showed bright pink also, still I was glad they didn't. Since your not through t-mobile that wouldn't work for you though.
If this comes to this, fingers crossed it don't but I have seen some with water damage sell on eBay around $90-$125. You might be able to sell it and then put an additional $30 to it to buy one that's in good working order, after all I bought mine on there for $120.
Sent from my HTC Leo using XDA App
htccraze said:
The phone that I sent back was the phone that had water damage. Four months after I took mine for a swim my charger port broke. I told them that the phone works fine but it does have water damage. I'm not sure why they didn't charge me the $100 they said because my water damage indicators showed bright pink also, still I was glad they didn't. Since your not through t-mobile that wouldn't work for you though.
If this comes to this, fingers crossed it don't but I have seen some with water damage sell on eBay around $90-$125. You might be able to sell it and then put an additional $30 to it to buy one that's in good working order, after all I bought mine on there for $120.
Sent from my HTC Leo using XDA App
Click to expand...
Click to collapse
alright dude...but you mean your HD2 went for a swim? So did it work after that or was the broken charger port the only damage?...and regarding the eBay sales,i dont mind if i can get a good price,but i also need to buy another used HD2(preferably an unlocked T-Mobile one)..but lets just hope i dont go there...i want my phone to come back to life and wreck havoc on the iPhones and LGs like before
Yea after I did the above mentioned steps it work just fine. Then after a few months the charger port stopped working. It getting wet didn't have anything to do with the charger port malfunctioning.
Sent from my HTC HD2 using XDA App
htccraze said:
Yea after I did the above mentioned steps it work just fine. Then after a few months the charger port stopped working. It getting wet didn't have anything to do with the charger port malfunctioning.
Sent from my HTC HD2 using XDA App
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Click to collapse
Wow...thats reassuring news.tks
Update
Hi,
i am very pleased to say that my HTC HD2 is back alive and kicking. I followed all the useful steps provided by the very helpful members here and its working well. A few niggles of course, include a few patches of slight texture variation at the top of the screen if tilted about 150 degrees,but it is very hard to see otherwise,so no worries. Secondly, the mic is dead since no one can hear me on the other side. Other than everything is perfectly fine!...didnt expect such a recovery after that washing machine incident. So, thanks alot for your help and also thanks alot to HTC for making a good phone!..now,a small question.any ideas on where i can buy the mic module separately? tks alot
I would look on ebay. There is also several repair shops you might have some luck contacting. Here in the US there is a company call cellphone CPR or something along those lines that could probably help find and install the mic for you.
Sent from my HTC HD2 using XDA Premium App
htccraze said:
I would look` on ebay. There is also several repair shops you might have some luck contacting. Here in the US there is a company call cellphone CPR or something along those lines that could probably help find and install the mic for you.
Sent from my HTC HD2 using XDA Premium App
Click to expand...
Click to collapse
That's the thing.here in Singapore,most of the repair shops fear to dissassemble the phone and repair the components.those shops that do are not well established,so I wouldn't really trust them on my phone.my best bet is to send it to HTC,but I need to order the warranty and water indicator stickers from eBay,else they wont repair it.and I've checked eBay,they don't sell the Mic on its own.I suspect its a whole module by itself,but I don't mind soldering a new Michael myself.just can't find one.
It's a difficult job as the microphone is assembled to the main board found at the base of the unit.
This entire mainboard would have to be replaced and it houses the Qualcomm CPU and other items.
If you do dissemble there is a rubber black protector on it. Try removing it and cleaning it. Perhaps some dirt or something got in there and has blocked the microphone function.
Good luck...
xlr8me said:
It's a difficult job as the microphone is assembled to the main board found at the base of the unit.
This entire mainboard would have to be replaced and it houses the Qualcomm CPU and other items.
If you do dissemble there is a rubber black protector on it. Try removing it and cleaning it. Perhaps some dirt or something got in there and has blocked the microphone function.
Good luck...
Click to expand...
Click to collapse
if theres some dirt, theres gotta be at least some sort of noise audible to the person on the other side...i suspect the whole mic to be broken.anyway, cant expect all to be well after a ride through the washing machine haha...ill ring HTC and ask for the repair cost.doubt it would be anywhere near affordable though...
Well, i'm following this with great interest. I am very happy to hear how good the recovery went.
Kawshigan, please update the thread once you know what htc said. I'd be interested to hear too.
Thanks
Sent from my HTC HD2 using XDA App
I had ordered the HTC water damage stickers and the little void stickers for the screws on the back off ebay.
I know its not ethical but i just couldn't afford what HTC wanted to repair the phone ($185) so i got it back and
sent it to T-mobile instead. HTC told me if they find water damage on the motherboard that it voids the warranty
as well as if the stickers are red/pink. I don't know what they can trace on the motherboard or if T-Mobile is the
same but i didnt have a problem returning it to them. I was never charged the $100 T-Mobile said it would
be for a out of warranty exhange either.
kawshigan said:
That's the thing.here in Singapore,most of the repair shops fear to dissassemble the phone and repair the components.those shops that do are not well established,so I wouldn't really trust them on my phone.my best bet is to send it to HTC,but I need to order the warranty and water indicator stickers from eBay,else they wont repair it.and I've checked eBay,they don't sell the Mic on its own.I suspect its a whole module by itself,but I don't mind soldering a new Michael myself.just can't find one.
Click to expand...
Click to collapse
It's not a module, it's just the mic itself, but you need some skills to desolder and solder it back on motherboard.
If you have no other solution, PM me your adress and I'll send you one.
---------- Post added at 09:59 AM ---------- Previous post was at 09:55 AM ----------
xlr8me said:
It's a difficult job as the microphone is assembled to the main board found at the base of the unit.
Click to expand...
Click to collapse
Kind of true, but not for a skilled service guy (a 15 minutes job)!
xlr8me said:
This entire mainboard would have to be replaced and it houses the Qualcomm CPU and other items.
Click to expand...
Click to collapse
Totally false!

Phone fell in water

Still works but the screen is foggy and flickers alot.
A friend of mine was telling me that something in the batter triggers and sprint can tell if it had water damage or not. How can i tell and look for that?
I also want to take it in but dont want sprint finding out about the water damage. Is there a loophole?
Shifted from my EVO
Well first things first. Turn it off, pull the battery. Do not try to restart it. You have several choices to dry it out. One really and proven one is rice. Fill a container half way with rice. Then stick your phone in the rice with the battery out, and the cover off. Push it down into the rice, and let it stay there for at least two days in a warm dry place. The other was actually used by a member here on XDA. He used is a Dehydrator. Not sure of the details, but it definately worked. I'd say set it on low and leave it there for at least 24hrs. Sprint can tell if the phone has been dropped in water by checking the water damage indicators. On the phone itself, and the battery. They're Red checkered squares. They turn bright Red when dropped in water. Although it has been proven they're not very reliable.
^^ is correct about the indicator on the battery. Its a little sticker and i always pull it off and take it to them. Once they asked me about the sticker and i just told them i have no idea what your talking about and that i didn't know about any sticker. Playing dumb helps
Take battery out....Stick it in oven on warm heat...take it out after 10 minutes to let it cool down.....repeat like 4 times.....
Sounds freaky but i fixed an iPod Touch and a Droid X with this method
Thanks for the replies guys. I ended up using a hair dryer on heat. It's not that bad of a condition. Everything seems to work properly (so far). This would happen when a ICS beta ROM comes to our phones... -_-
is there any other indications that sprint would be able to tell if it had water damage?
Enraged21 said:
is there any other indications that sprint would be able to tell if it had water damage?
Click to expand...
Click to collapse
Nope, unless there is still water in it when you take it there, oh and don't use a hair dryer, all that does is "push" water in deeper through all the electrical wiring and circuits, plus it can melt parts of the device
Personal expierence lol
notsointeresting said:
Nope, unless there is still water in it when you take it there, oh and don't use a hair dryer, all that does is "push" water in deeper through all the electrical wiring and circuits, plus it can melt parts of the device
Personal expierence lol
Click to expand...
Click to collapse
+1 to not using the hairdryer . It will not work as well as you think. There's a good chance that you still have moisture in the device.
See I wouldn't have known that lol. Thankss!
Why we're here.

[Q] nexus 4 dead? (water damage, red light of death)

So my clumsy self decided to go swimming a few days ago and forgot my nexus 4 in my shorts. it is water damaged and whenever i try to charge it, it gives me the red light for death. i googled around to see what the red light of death means and saw that removing the battery and putting it back on would solve the issue. i went ahead and did that. the phone did show the google logo and the paranoidandroid boot logo but shut off right after seeing that. The red light of death appears regardless of me removing the battery and plugging it back in or not. Also when i try charging it without the battery plugged in, the screen would turn white (very dim though) then turn off and the red light would start blinking somewhat rapidly.
I was thinking of buying a new battery and trying to see if maybe its just the battery but since i plugged in the charger without the battery and im still getting the red light, my phone might just be a goner.
what do you guys think? any suggestions? or is it time to buy a new nexus 4 (or possibly another phone that has a better bang for the buck)
thanks!
First thing to do when a smatphone was in water contact is open and dry it. Never try use or charge it without do this.
Sent from my Nexus 4 using xda app-developers app
MelquiXDA said:
First thing to do when a smatphone was in water contact is open and dry it. Never try use or charge it without do this.
Sent from my Nexus 4 using xda app-developers app
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Click to collapse
agreed. dry rice is the best/cheapest way to do this. Remove the battery (yes, I know that means unscrewing the 2 torx screws to get the back off....just do it!!) then drop the phone and battery in a ziplock bag so they are covered completely with dry rice and let it sit for 24 hours.
I did the same thing. I didn't have the tools to remove the back, but I did have it in rice for 3 days. Removing the battery and directly charging it even over night still doesn't help (just yesterday, into this morning). I did manage to get the charging icon but after 8 hours it didn't even charge. I unplugged and tried again to charge directly to the battery overnight and this morning, I connected the battery in and it didn't come on. Plugged it in the wall charger and got the blinking red light.
Think I need a new battery and or motherboard. There was slight corrosion but cleaned it up best I could with 91% isopropyl alcohol.
Help please.
hp420 said:
agreed. dry rice is the best/cheapest way to do this. Remove the battery (yes, I know that means unscrewing the 2 torx screws to get the back off....just do it!!) then drop the phone and battery in a ziplock bag so they are covered completely with dry rice and let it sit for 24 hours.
Click to expand...
Click to collapse
Oops - I misread this as "dry ice" and leapt to reply that rapidly cooling soggy tech to -78 degrees C is not likely to help.
I need glasses / more sleep
Looking forward to the day when phones have Liquipel type coatings as standard
Just went a Googling and came up with this http://nanostate.co/ - anyone have any experience of using it?
mgtmadness said:
I did the same thing. I didn't have the tools to remove the back, but I did have it in rice for 3 days. Removing the battery and directly charging it even over night still doesn't help (just yesterday, into this morning). I did manage to get the charging icon but after 8 hours it didn't even charge. I unplugged and tried again to charge directly to the battery overnight and this morning, I connected the battery in and it didn't come on. Plugged it in the wall charger and got the blinking red light.
Think I need a new battery and or motherboard. There was slight corrosion but cleaned it up best I could with 91% isopropyl alcohol.
Help please.
Click to expand...
Click to collapse
I'll bet it's the battery. They don't stand much chance when exposed to water, but your phone should be just fine. Get yourself a new battery and give it a shot....at least that's a cheaper option than getting a new phone, right?
thesoupthief said:
Oops - I misread this as "dry ice" and leapt to reply that rapidly cooling soggy tech to -78 degrees C is not likely to help.
I need glasses / more sleep
Looking forward to the day when phones have Liquipel type coatings as standard
Just went a Googling and came up with this http://nanostate.co/ - anyone have any experience of using it?
Click to expand...
Click to collapse
lol...I hear that, man....been wearing glasses since I was a kid. I'm blind as a bat without them
hp420 said:
I'll bet it's the battery. They don't stand much chance when exposed to water, but your phone should be just fine. Get yourself a new battery and give it a shot....at least that's a cheaper option than getting a new phone, right?
lol...I hear that, man....been wearing glasses since I was a kid. I'm blind as a bat without them
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Click to collapse
I got some Flash Flood from Nanostate a couple of weeks back, it works, I ran tap water over my iPhone 5 for a few mins and everything was as they said, water bounced off the glass, buttons and bezel. The only downfall is you cannot completely submerge your phone underwater but I am guessing it better to have some type of protection than nothing.
I actually managed to recover my Nexus 4 from water damage.
When I took it apart there was still some water on the battery and the motherboard cover so I just wiped it away.
I took out the motherboard and saw there was some corrosion so I dunked it motherboard in 91% isopropyl alcohol for about 30 minutes and bought a new battery.
Now everything works just fine.
lilracerboi said:
I actually managed to recover my Nexus 4 from water damage.
When I took it apart there was still some water on the battery and the motherboard cover so I just wiped it away.
I took out the motherboard and saw there was some corrosion so I dunked it motherboard in 91% isopropyl alcohol for about 30 minutes and bought a new battery.
Now everything works just fine.
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Click to collapse
i just bought a water damaged n4 on ebay. when i got it it would not turn on only flashing red light with charger plug in. i replaced the battery with a one i had from a lg e790 and got it to boot and it's been working since.
i hope this helps.
Same thing happened me with the damn pool situation. After a few days in rice and leaving it in the car my nexus boots up to the welcome screen then immediately powers off due to a dead battery. I bought a new battery off eBay so im hoping it works. I hate using a Samsung note.
Sent from my SAMSUNG-SGH-I717 using XDA Premium 4 mobile app
..
lilracerboi said:
I actually managed to recover my Nexus 4 from water damage.
When I took it apart there was still some water on the battery and the motherboard cover so I just wiped it away.
I took out the motherboard and saw there was some corrosion so I dunked it motherboard in 91% isopropyl alcohol for about 30 minutes and bought a new battery.
Now everything works just fine.
Click to expand...
Click to collapse
Did you actually submerge the mobo in alcohol for 30 min? Totally covered in alcohol?
Possible Water Damage
I had my Nexus 4 on the table with a glass of water. I accidentally knocked the water glass and water spilled over my phone. I immediately picked up the phone and wiped it with a cloth and turned it off. I have not turned on the phone for 24 hours and there is no water in the SIM tray. What should I do.
I have not tried the rice technique yet as I have to remove the phone but it is necessary? Or would it be enough if I leave the phone turned off for a another 48 hours?
defnow said:
Same thing happened me with the damn pool situation. After a few days in rice and leaving it in the car my nexus boots up to the welcome screen then immediately powers off due to a dead battery. I bought a new battery off eBay so im hoping it works. I hate using a Samsung note.
Sent from my SAMSUNG-SGH-I717 using XDA Premium 4 mobile app
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Click to collapse
Hey dude, dropped my n4 in water a week back, left it in rice and got a new battery, installed the battery, booted the phone on and it worked for about 2 days until i was just using my phone and it powered off with still about 80% battery left, tried to switch one and as soon as the phone booted and got to the lock screen it powered down again, did your new battery fix this issue? thanks for any help!

Samsung A40 took a little swim... but signs of life! Any ideas?

Hi all. My trusty A40 had a little mishap at the toilet (!) and drowned. I gave it a rinse with alcohol and dried it for days in 40C ovens etc. but no life was recovered. A few days ago I decided to try charging it anyway and nothing happened... then this morning my old alarm went off! The screen is still completely dead, and I didn't notice any vibration but I always had that turned off. When I plug it in and out with the USB cable it makes the correct beeps. I can even snooze that alarm with the power button and turn it off with volume down.
When I connect it to my PC though I don't see any drive come up, I guess it doesn't default to USB file transfer so maybe this isn't a surprise.
So is my phone alive inside and just has a completely dead screen? The alcohol has conveniently taken the back off by dissolving the glue. Also, I've already got a new Redmi Note 11 so I'm happy to tinker with this phone and I've replaced screens before no problem.
Is this phone worth buying a new screen for do you all think or would that be a total waster of $35?
Thanks!
(PS: sorry if not in correct forum here, not sure which one is most appropriate for hardware / repair issues)
Wrong. You may still be able to save it...
Pull the back cover and disconnect the battery asap. Allow to dry completely before powering up. Fan blowing on it with the phone on it's side in a very warm room for at least a couple days.
The mobo power section or the soc are the most likely areas to fail from corrosion. Possible the connectors are still retaining brown water
Do Not use anhydrous isopropyl alcohol as a drying agent if it has an LCD as it will poison it.
blackhawk said:
Wrong. You may still be able to save it...
Pull the back cover and disconnect the battery asap. Allow to dry completely before powering up. Fan blowing on it with the phone on it's side in a very warm room for at least a couple days.
The mobo power section or the soc are the most likely areas to fail from corrosion. Possible the connectors are still retaining brown water
Do Not use anhydrous isopropyl alcohol as a drying agent if it has an LCD as it will poison it.
Click to expand...
Click to collapse
Thanks but I've already completed the drying. The CPU is working in there, in fact when I put in a SIM it will even ring when I phone it. I'm just wondering if I can be 100% sure everything is OK apart from the screen? Is there anything else I can check?
DannySolo said:
Thanks but I've already completed the drying. The CPU is working in there, in fact when I put in a SIM it will even ring when I phone it. I'm just wondering if I can be 100% sure everything is OK apart from the screen? Is there anything else I can check?
Click to expand...
Click to collapse
If it's dry and still malfunctioning the damage is likely to the mobo, is permanent and will be progressive. Corrosion never sleeps.
You can disassemble and check the ribbon cable pins going to the display for moisture and/or corrosion damage. The mobo power section and the BGA chipsets* (can't see the damage as the contacts are under the chip) are the most likely to be damaged.
With water exposure time is of the essence. You might save the device if you're fast enough and do the right things. Salt water is sure death.
* you sure it's dry?!! BGA chipset's don't have airflow around the pins. Any water under the chipset will also be retained by capillary action...
blackhawk said:
If it's dry and still malfunctioning the damage is likely to the mobo, is permanent and will be progressive. Corrosion never sleeps.
You can disassemble and check the ribbon cable pins going to the display for moisture and/or corrosion damage. The mobo power section and the BGA chipsets* (can't see the damage as the contacts are under the chip) are the most likely to be damaged.
With water exposure time is of the essence. You might save the device if you're fast enough and do the right things. Salt water is sure death.
* you sure it's dry?!! BGA chipset's don't have airflow around the pins. Any water under the chipset will also be retained by capillary action...
Click to expand...
Click to collapse
I submerged the whole thing in alcohol and then dried it at 50C for 72 hours. Everything I can test works perfectly (including ringing when called) but the screen is totally dead. I cleaned that socket but still nothing.
Is it possible the water/alcohol damaged the screen and not the motherboard? Sound unlikely but that's what they symptoms indicate.
So is it worth a bet on fixing with a $30 new screen or not do you think?
DannySolo said:
I submerged the whole thing in alcohol and then dried it at 50C for 72 hours. Everything I can test works perfectly (including ringing when called) but the screen is totally dead. I cleaned that socket but still nothing.
Is it possible the water/alcohol damaged the screen and not the motherboard? Sound unlikely but that's what they symptoms indicate.
So is it worth a bet on fixing with a $30 new screen or not do you think?
Click to expand...
Click to collapse
I think it's the mobo but you're holding it. I don't know how suspectable the the display is to water damage. Did you use anhydrous isopropyl alcohol?
blackhawk said:
I think it's the mobo but you're holding it. I don't know how suspectable the the display is to water damage. Did you use anhydrous isopropyl alcohol?
Click to expand...
Click to collapse
All I could find was 100% ethanol I'm afraid and only realised the FAQs saying "alcohol" were talking about isopropanol after I'd finished. Isn't ethanol also used for mobo cleaning? Maybe that destroyed the screen though.
DannySolo said:
All I could find was 100% ethanol I'm afraid and only realised the FAQs saying "alcohol" were talking about isopropanol after I'd finished. Isn't ethanol also used for mobo cleaning? Maybe that destroyed the screen though.
Click to expand...
Click to collapse
Water can damage AMOLED displays as well it seems. Best to keep all solvents away from the display. Methanol alcohol should never be used.
Ethanol not sure about.
blackhawk said:
Water can damage AMOLED displays as well it seems. Best to keep all solvents away from the display. Methanol alcohol should never be used.
Ethanol not sure about.
Click to expand...
Click to collapse
OK I think then I'll shoot the moon and buy a replacement screen... would be a terrible waste to throw this phone out if that's all that's wrong.
Plus we would now know that ethanol is OK for phone motherboards, plus it takes the glue off the back of a Samsung A40!
DannySolo said:
OK I think then I'll shoot the moon and buy a replacement screen... would be a terrible waste to throw this phone out if that's all that's wrong.
Plus we would now know that ethanol is OK for phone motherboards, plus it takes the glue off the back of a Samsung A40!
Click to expand...
Click to collapse
Use anhydrous (preferably 96% minimum 93%) isopropyl alcohol.
I wouldn't go too nuts trying to save it due the price point and especially the fact it has known water damage. Buying a used one in good condition be a viable option if you really like that model.
blackhawk said:
Use anhydrous (preferably 96% minimum 93%) isopropyl alcohol.
I wouldn't go too nuts trying to save it due the price point and especially the fact it has known water damage. Buying a used one in good condition be a viable option if you really like that model.
Click to expand...
Click to collapse
I've just notices that with this model there is a pretty hefty flex between the top and bottoms boards with a connector on each end. This must also carry screen data so I'll give that a good clean out.
Second hand AMOLEDs are impossible to find for the A40, they all have horrible burn in.
I'm going to get the INCELL LCD version already in a new front frame and go from there. Should still be a decent back up phone.
And the fun of fixing it is what it's all about anyway, right? :-D
You grossly underestimate the corrosion process that's likely been initiated. I'm not so optimistic about it ever being reliable again.
I can understand corrosion while the phone is wet... not after it's been soaked in alcohol and completely dried. The process doesn't continue.
I'm going to guess it's the screen only that's broken as I see no other issues... I bought a cheap LCD replacement already in a new frame for $30.
Let's see how it goes.
DannySolo said:
I can understand corrosion while the phone is wet... not after it's been soaked in alcohol and completely dried. The process doesn't continue.
I'm going to guess it's the screen only that's broken as I see no other issues... I bought a cheap LCD replacement already in a new frame for $30.
Let's see how it goes.
Click to expand...
Click to collapse
Yes, yes it does. Most don't understand how insidious it is. The oxides formed are insoluble in water and alcohols. Many are hygroscopic and attract moisture, then you know what happens...
This is the same reason you never buy a flood damaged car. Even if everything is working it will start to fail sure as the sun rises in the morning.
Sometimes if you pull the battery before the flooding it can be saved... sometimes. Always check for signs of water damage when buying a vehicle. EV's just burn to the ground when water damaged
Energized circuits greatly exacerbate and accelerate the corrosion process. You see the results. The future is uncertain for that phone but it will likely eventually fail from that one prolonged exposure.
DannySolo said:
I can understand corrosion while the phone is wet... not after it's been soaked in alcohol and completely dried. The process doesn't continue.
I'm going to guess it's the screen only that's broken as I see no other issues... I bought a cheap LCD replacement already in a new frame for $30.
Let's see how it goes.
Click to expand...
Click to collapse
tell results
OK so the new screen eventually arrived and I turned on the phone then plugged in the new screen... nothing. But I guess you have to plug in the screen and then turn it on, but that seems to be impossible with the A40 where you need to attach the middle frame for to use power/volume, and that blocks the screen connector.
Is there some way to bridge those little spring contacts on the PCB to reproduce a power on signal? Otherwise I'll just have to do the whole replacement process and see what happens at the end!
Just as well there's holidays coming.
DannySolo said:
OK so the new screen eventually arrived and I turned on the phone then plugged in the new screen... nothing. But I guess you have to plug in the screen and then turn it on, but that seems to be impossible with the A40 where you need to attach the middle frame for to use power/volume, and that blocks the screen connector.
Is there some way to bridge those little spring contacts on the PCB to reproduce a power on signal? Otherwise I'll just have to do the whole replacement process and see what happens at the end!
Just as well there's holidays coming.
Click to expand...
Click to collapse
i do not know, sorry, never opened my a40, still using it right now

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