Samsung A8 can't be turned on - Galaxy A3, A5, A7, A8, A9 Q&A, Help & Troubleshoot

Hi guys, I am a newbie, need help and using Samsung A8 (A8000F). A little water dropped on my phone LCD, I thought it was fine, because the phone was on and nothing was wrong. Then a few hours later the sim card was not identified and after I reinserted it the phone was overheating. Then the next morning it suddenly can't be turned on. Is there something I can do to fix it by myself? thank you very much.

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[Q] Problem with weeks old Samsung S4 Mini Dual Sim GT-19192

Hi guys
been a while since i got around to xda, knew i ll back sooner or later so here i am
bought a S4 mini dual sim GT19192 two months ago, great phone but since two days there's a crazy issue am facing
When i turn the phone off
As soon as it goes off starts vibrating with a second or two gap (feel like somehow its not totally off) and keeps doing so until battery is taken out, if i wanna turn it back on and put in the battery it starts the vibrating drama again, simply cant get it to stop vibrating/ cant turn it back on, the ONLY way to turn it back on is connect to laptop or charging unit via usb cable (the battery icon comes up, vibration stops, and can be turned on)
i did some research where this happened to a S3 phone, in most cases it was the power broken or stuck out of its place on the inside, so i opened up the back, took off the side that contains volume buttons power button, put the battery against the pins and bam same problem
this means each time i turn it off i need to connect to laptop or charging unit to turn it back on
can anyone please help?
just in case this set is in brand new condition never opened (till i did) and not rooted, hard reset dint help either
am really
anyone?
very disappointed to see no responses
I think it is a faulty battery problem.check your battery in another phone.
Sent from my GT-I9500 using Tapatalk

[Q] I9505 died suddenly now wont charge

Hi all, tried searching for some help but couldn't find anything of any use, plenty of similar things only but not quite the same.
Basically, my phone had been in use today, as normal, nothing different, nothing new installed. I put it down on the table while I did some work around the house, an hour late I picked it up and it was off. It had around 70% power when I last looked at it, Not only had it turned off, it was so hot I couldn't hold it for more than a moment. After letting it cool down, I tried to turn it on and nothing at all happened. I decided to plug it in and leave it to charge a bit, but when I came back to it again half an hour later it was still dead and hot as hell again.
I have tried three different chargers and even a new battery that I bought in town just this morning, thinking the battery was the problem. Still exactly the same thing happening with new battery, wont charge, phone heating up within minutes to the point where I cant hold it. Heat seems to be building up underneath the memory card slot.
I did manage to boot it up briefly whilst it was plugged in before it got too hot but had to turn it off again to cool it down. It seemed to boot just fine on that occasion. Also managed to get it into recovery and did a cache wipe as well as a full factory wipe but no difference. Again I managed to boot it after the wipe, seemed to start up as you would expect a first boot to do, asking me to set up the phone, but again it was no gaining charge and was heating up very fast so had to turn it off again.
Any ideas what the hell has gone wrong with me phone?
I have a repair pack from Samsung on route as its only four months old, so they will do a warranty repair or a swap, but while I'm waiting, thought it best to ask here if anyone has any ideas.
Sorry for such a long post, if I need to post anything more specific feel free to ask.
Thanks in advance
I experienced such before...
Phone heats up a lot and shuts off when charging. I send the phone in for repair, the service center identify it as faulty motherboard and got a replacement handset...
It is just bad quality components in Galaxy S4. Go and change your phone at service center.
Thanks for that, I had a feeling it was motherboard, processor or USB board, Was kind of hoping I was wrong and there was something I could do at home to fix it but oh well...
Does it matter that I have the new German 4.3 firmware on a UK handset with multi-csc? Knox flag is still 0x0 if that matters to warranty lol. I cant flash anything stock if I cant turn the thing on lol.
Why is the S4 such a poor quality phone for a flagship, seems to be so many faults with the phone and battery. I've had both the cracked screen issue as well as this crash for no reason. My S2 on the other hand is still going strong and working perfectly despite being dropped a few times and having had no new parts or battery replaced. Its covered in marks and dents from prolonged use and still keeps going. Had that since launch. Back to using it while waiting for the four month old S4 to be fixed.
EDIT:
Strange new development, the original battery doest do anything any more. Nothing happening at all, no charging screen, no heating up, nothing. New battery still not charging and causing phone to heat up. Did manage to boot the phone up again for a few minutes last night and besides heat and not charging, it seemed to work. Making me think its not the motherboard at fault now or surely it wouldn't turn on. No idea what's going on now.

[Q] [I9506] Stuck In Samsung Screen After Dying

So, I've only noticed this quite recently but when my S4 runs out of batteries, it goes to that Samsung screen with the bluish purple whirly thing around it and then it just flashes the Samsung logo. It doesn't turn off completely and theres nothing I can do other than pulling the battery, at which it starts back up.
Is this just happening to me? Any help would be greatly appreciated.
Maybe your battery is damaged? If it's swollen, it is damaged.
Update
Battery is not swollen or anything, removed the SD card and it stopped happening, for a bit then put it back in and all seemd fine but then it started all over again.
ungmon said:
Battery is not swollen or anything, removed the SD card and it stopped happening, for a bit then put it back in and all seemd fine but then it started all over again.
Click to expand...
Click to collapse
Remove the SD card and use ur phone normally during some days. Change the SD card for other one if u see ur phone is working OK :highfive:

Galaxy S8 G950F Motherboard issues

Hello XDA Members !
I own a Galaxy S8 G950F model and I bought it with SIM Card Reader known to malfunction...the issue is that I odered a new SIM READER and I failed replacing it. What I mean by failing is that I haven't managed to remove it from the motherboard, even after I heated up that zone at 200 degrees Celsius. After I realised I need to contact special repair services I reassembled the phone and the volume up button was stuck as it was pressed but it was some motherboard issue, not the button itself. So I dissasembled the phone 3 or 4 times and I still couldn't fix the issue, few minutes after that phone went dead and came up to Samsung logo after 5-6 tries of reflowing the hole motherboard then went dead and stayed dead...
Now I know the motherboard might be dead but fun fact is that if I connect the phone to my laptop via USB, if I keep Power Button pressed phone connects to PC as "Exynos 8895" but no drivers can be installed and phone storage is not showing up...also I want to mention screen has no input and no LED is turning on when charging or connecting to PC....
Not so worring about the phone, any ideeas are welcomed, I own a P30 Pro now and a motherboard for S8 in my country is around 80-100 bucks but it makes me put some questions and maybe I'll find a workaround...
Any ideeas?

S7 edge not working anymore..., please help !!!

Hi guys;
Well few days ago my s7 edge (SM-G935W8 32Gb) start overheating and crashing and screen freezing and it automatically restart then it work for 5-10 minutes and then same thing again and again (overheat-crash-freeze-restart, overheat-crash-freeze-restart, ........) but now it just turned off and won't turn on anymore, i tried to put it on charger but i didn't even charge or show the battery percentage like it did before just a black screen and nothing happen, please help.
thanks in advance.
Sounds like a hardware problem, take it to a repair shop.

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