black screen, no solution works. help ! - Samsung Galaxy A71 5G Questions & Answers

Hey guys
Recently bought a used A71 for my son. I picked it up after a fresh reset by the person who sold it to me and the screen was working. For no reason, my wife restarted it during the set up process and boom, black screen and nothing.
Tried the forced reset method.
Tried the charge + forced reset method.
No sim card
no sdcard
Phone is charging since an hour and still nothing as if it's dead or locked in for no reason. LIke I said, the phone was lit and working fine before the restart.
Any solution you might think of before I have it checked by a shop ?
thanks !

Cabanon said:
Hey guys
Recently bought a used A71 for my son. I picked it up after a fresh reset by the person who sold it to me and the screen was working. For no reason, my wife restarted it during the set up process and boom, black screen and nothing.
Tried the forced reset method.
Tried the charge + forced reset method.
No sim card
no sdcard
Phone is charging since an hour and still nothing as if it's dead or locked in for no reason. LIke I said, the phone was lit and working fine before the restart.
Any solution you might think of before I have it checked by a shop ?
thanks !
Click to expand...
Click to collapse
Does any recovery buttons work?
Power + vol up
Power + vol down
Etc

Hi, no as stated above.

What is it recognized as when plugged into a computer?

Related

[Q] Infinity won't start, just vibrating indefinitely

Hi gurus,
Updated the OTA patch today from ASUS. worked fine but got discharged while my son was playing with it. charged it and then tried to start it. It just won't boot. Starts vibrating which will not stop. Nothing on the screen. Pressing on Power button for about 10 seconds will stop it for a moment but will start again to vibrate after a short pause.
Tried the manual reset button, same result. Finally, pressed the power and Volume up button for 10 seconds which has atleast made it stop vibrating but is still dead. Tried to restart and same behaviour.
Has anyone seen this on infinity before? Have had it for 9 months and never been a problem.
Thanks in advance for your help.
Maybe a HDMI connection might let you see whats happening if its related to the display not working.
I am having the same problem. it vibrates..stop for 1 sec..then vibrates again and that's all..always black screen!! i think the problem (in my case) is my screen + digitizer coz my computer can recognize it as storage!
Yes my problem is the screen! i bought a micro HDMI to HDMI cable and everything works like a charm! The screen brightness works but no image at all!
Screenshots:http://db.tt/aBg7IXKd
Tried to charge it fully but to no avail.
still keeps just vibrating.
I work with leicesteruk (small world and why is he not using CROMi-X!?) and I think this is hard bricked! Device will not power on other than it vibrates once then on the second vibrate that normally signifies boot loader load it jus continuously vibrates and does nothing else. No screen, nothing.
We have tried various volume held down options and nothing works including reset hole and letting the battery drain. It still charges but just goes into continuously vibrating with no screen.
The only thing it will accept is power down plus volume down stops the vibrating after 20 secs if held down.
I have advised to RMA.
wow, that's extremely hard luck right after an update.
Was your tablet rooted, and were you using OTA root keeper?
Toastysoul said:
Was your tablet rooted, and were you using OTA root keeper?
Click to expand...
Click to collapse
No it was completely stock. Just a regular OTA. Note the device died whilst in use after the OTA had been applied the day before.
I hv solution for it
kvikas7 said:
I hv solution for it
Click to expand...
Click to collapse
any solution for hard brick / apx mode only that doesn't involve replacing motherboard ?

Bluescreen with following reboot

Hello everybody,
a friend of mine bought my Motorola Moto G. But he is having a lot of trouble. After an unexpecting but markable time a bluescreen appears and the phone starts to reboot.
He told me, that it also happens after he did a factory reset. Also his SIM-card is a normal card which he received from the provider and is not cut to micro-sim by himself. He tried it with 2 different providers. Same problem...
I took it back and made a test about 48 hours. Nothing happend. I also did a factory reset. After I updated the firmware to 4.4.2 also nothing happend. The system is not rooted and the bootloader is still locked.
Does anyone has an idea?
Thanks advance for your help.
KR
Hello, similar problem with my one. Phone has arrived on tuesday, today i was playing Dead Trigger 2, when screen turns completely into blue and few seconds later phone just shut down. I´m pretty sure there were about 30% battery left. Now I´m unable to power it off and when I plug it into charger (using my sony 5V/850mA wall charger), phone starts burn after few minutes.
CZ3+l said:
Hello, similar problem with my one. Phone has arrived on tuesday, today i was playing Dead Trigger 2, when screen turns completely into blue and few seconds later phone just shut down. I´m pretty sure there were about 30% battery left. Now I´m unable to power it off and when I plug it into charger (using my sony 5V/850mA wall charger), phone starts burn after few minutes.
Click to expand...
Click to collapse
Were you able to find any solution? I'm having the same problem too!

[Q] Nexus 5 constantlly turning on and off

For quite a long time I did not make any change on Nexus ROM or applications, but yesterday my Nexus turns off while I was web browsing. I tried to turn it on but it refuses. It is only possible with USB cable plugged in, but then it constantly turns on for 1 second and then turns off, and this is going in endless loop as soon as USB cable is plugged in. But with unplugged cable NEXUS can not be powered on.
The video can be seen on this link
https://www.dropbox.com/s/cvyxii4ctm4aqgu/VID_20141110_190522.mp4?dl=0
Yesterday I somehow manage to get in recovery mode and I wipe cache and Nexus boot ROM, but after 30 minutes of usage it again turns of by itself. After that for more than 100 times I tried to get to recovery mode but I could not.
So, I think that my only chance to wipe cache and put new ROM is through ADB. But I do know how to do that. Can anyone help me?
P.S. I both my NEXUS in US, but I live in Croatia (EU) and Google tells that they can not make exchange for other NEXUS (although my phone is under warranty) because they can only do that for postal address inside US. Because I do not live there and any of my friends or relative will travel in US soon my only way to get my NEXUS working is through ADB.
sounds as your power button is "stuck'.
Try the LG RMA. Worked for me here in Belgium
brom25 said:
Try the LG RMA. Worked for me here in Belgium
Click to expand...
Click to collapse
Where did you both your Nexus, and in which country did you send RMA request?
DTFuser said:
For quite a long time I did not make any change on Nexus ROM or applications, but yesterday my Nexus turns off while I was web browsing. I tried to turn it on but it refuses. It is only possible with USB cable plugged in, but then it constantly turns on for 1 second and then turns off, and this is going in endless loop as soon as USB cable is plugged in. But with unplugged cable NEXUS can not be powered on.
The video can be seen on this link
https://www.dropbox.com/s/cvyxii4ctm4aqgu/VID_20141110_190522.mp4?dl=0
Yesterday I somehow manage to get in recovery mode and I wipe cache and Nexus boot ROM, but after 30 minutes of usage it again turns of by itself. After that for more than 100 times I tried to get to recovery mode but I could not.
So, I think that my only chance to wipe cache and put new ROM is through ADB. But I do know how to do that. Can anyone help me?
P.S. I both my NEXUS in US, but I live in Croatia (EU) and Google tells that they can not make exchange for other NEXUS (although my phone is under warranty) because they can only do that for postal address inside US. Because I do not live there and any of my friends or relative will travel in US soon my only way to get my NEXUS working is through ADB.
Click to expand...
Click to collapse
Shake your phone vigorously for a minute, I've been using that as a temp fix for a dodgy power button exactly as you've described
topgeardave said:
Shake your phone vigorously for a minute, I've been using that as a temp fix for a dodgy power button exactly as you've described
Click to expand...
Click to collapse
And what you did after shaking? I try but I did not helped.
DTFuser said:
And what you did after shaking? I try but I did not helped.
Click to expand...
Click to collapse
It usually helps the button back out again, I think you should RMA to LG, I'm sure they're worldwide. You could always open up the phone and try unsticking the power button if you can't be bothered sending it back.
topgeardave said:
It usually helps the button back out again, I think you should RMA to LG, I'm sure they're worldwide. You could always open up the phone and try unsticking the power button if you can't be bothered sending it back.
Click to expand...
Click to collapse
Power button is not what cause the problem. I found many reports about the same problem, like on this page
http://www.reddit.com/r/Nexus5/comments/29tr5n/nexus_5_wont_turn_on_google_screen_keeps_flashing/
but nothing which I tried did not helped. But certainly power button is not causing the problem.
When the problem appears for the first time I manage to get into recovery and wipe cache, and after that phone booted ROM. After 30 minutes of working phone turns off and now I'm not able to get even into recovery.
DTFuser said:
Power button is not what cause the problem. I found many reports about the same problem, like on this page
http://www.reddit.com/r/Nexus5/comments/29tr5n/nexus_5_wont_turn_on_google_screen_keeps_flashing/
but nothing which I tried did not helped. But certainly power button is not causing the problem.
When the problem appears for the first time I manage to get into recovery and wipe cache, and after that phone booted ROM. After 30 minutes ow working phone turns off and now I'm not able to get even into recovery.
Click to expand...
Click to collapse
Ah damn, sorry to hear mate. Go to LG, only solution you have left.
im in the same boat my phone was just working for the past since i had it and now just like 20 minutes ago it just shut off and now doing the constant turning on and off crap
and im rooted with the latest build from pac-man (a clean install), cant even get into the fast boot and recovery to recover to stock since its doing this bootloop thing
any more help would be amazing
Edited - problem fixed it was something up with the power button, got a couple hard wacks and it booted up perfect
meechieballer said:
im in the same boat my phone was just working for the past since i had it and now just like 20 minutes ago it just shut off and now doing the constant turning on and off crap
and im rooted with the latest build from pac-man (a clean install), cant even get into the fast boot and recovery to recover to stock since its doing this bootloop thing
any more help would be amazing
Edited - problem fixed it was something up with the power button, got a couple hard wacks and it booted up perfect
Click to expand...
Click to collapse
So, since shaking, hard wacks, and anyting physical did not helped after your post I dismantle my phone and without back plate and upper plate on chips my phone works perfectly. So it seems that upper plate which covers chips is the cause of the problem.
For me, not even disassembling has helped, so I bought another motherboard and put it into my phone.
Dancsi said:
For me, not even disassembling has helped, so I bought another motherboard and put it into my phone.
Click to expand...
Click to collapse
the problem occured and i found what it was my power button it wasnt staying in place like its tilting so now i got to buy a new button for it :/
As far as I remember, the button is soldered to the board, and can not be bought separately. I know the second thing for sure, since I was also only searching for a separate button in the beginning...

Power button doesn't turn on device unless you reseat battery

Hello geniuses!
I have a problem. I recently purchased a LG G3 unlocked from a seller on Swappa and the device appears to work however there is a funny glitch i recently discovered about this phone. Maybe its mine only. But heres what happens....
I boot into phone like normal, after a days use, and sometimes when preparing to switch cases and what not, i shut down the phone remove battery and clean the device sometimes.. I notice that if the phone is ON, and when i choose Reboot, The phone reboots fine. But if i choose POWER OFF.
The phone powers off, and when i try to boot it back up again, it doesnt let me, it just stays blank.. But the second i take out the battery, place it back in, and then push the power button once, it powers on fine.. What on earth is happening here?..... any idea? Please help.
prasadudwadia said:
Hello geniuses!
I have a problem. I recently purchased a LG G3 unlocked from a seller on Swappa and the device appears to work however there is a funny glitch i recently discovered about this phone. Maybe its mine only. But heres what happens....
I boot into phone like normal, after a days use, and sometimes when preparing to switch cases and what not, i shut down the phone remove battery and clean the device sometimes.. I notice that if the phone is ON, and when i choose Reboot, The phone reboots fine. But if i choose POWER OFF.
The phone powers off, and when i try to boot it back up again, it doesnt let me, it just stays blank.. But the second i take out the battery, place it back in, and then push the power button once, it powers on fine.. What on earth is happening here?..... any idea? Please help.
Click to expand...
Click to collapse
Im also having the same problem and i cant find any solution on the internet
found this on internet regarding this isssue i hope it works
https://www.youtube.com/watch?v=7gLenUZPWvs
shery butt said:
found this on internet regarding this isssue i hope it works
https://www.youtube.com/watch?v=7gLenUZPWvs
Click to expand...
Click to collapse
have you found any solution for this problem?
I am experiencing same

Question Realme Gt Neo 2 Won't turn on

Hi there. I came here on last resort.. Yesterday after I did the last update of the security patch (december 2022 I believe), the phone rebooted just fine, and after about 5-10 minutes it froze. Screen on and simply froze. A bit after the screen went off. After 2 -3 minutes like this I tried to force restart it by holding the power button and It did vibrate altough the screen didn't turn on and it didn't reboot.
Today and even after having it charging for a while it's just dead.. Doesn't turn on, can't put in it recovery mode also, nothing.
I have no idea what happened but I can't do much.
Any advice guys?
Appreciate in advance.
The same here. I can't even boot into recovery mode. I have no idea how they're going to fix this problem. Figures - this is the first Android phone that I haven't mess with i.e. root, etc.
Well I cannot be without phone and even after being charging for more than 5 hours, there wasn't even a signal of life on it. Nothing. I also couldn't even do a backup or something. Frustrating.
Bought it on amazon last year. Spoke to them and they will refund the value. Will send it back and already bought another phone. (Redmi note 11 pro).
Regarding this is just very very bad. Stuff like this cannot happen after an oficial update.
Bye Gt2 :'c
Have no Idea of what they will do because the phone is dead pretty much.. Think this is only fixable by going to a store or something...
Unless the phone is working except the screen is off I can't see it being easily fixed. I bought my off Aliexpress so I might **** out of luck.
I tried to see if it would make some noise like if the phone was working and screen off but nothing.. IDK but this really sucks. Maybe trie to contact realme directly?
I tried plugging the phone into my computer to see if it was recognized by WIndows but nothing. I have contacted them via email and Aliexpress message board but these Chinese companies aren't known for having good customer service. It's a shame for I quite like the phone. May I ask what you bought as a replacement?
I also did that but nothing. Initially I tought it could be the battery. It was either that or the update but if you also had it then for sure it was the update and there's probably more with the same problem.. Can only wish you luck with the customer support..
I've bought the xiaomi redmi note 11 pro. I just searched similar priced phones compared to what I paid for the realme(320€) and that was the best option for the price. It costed 289€. The 6gb variant. It's not a direct competitor but it's more than enough for me and it offers a lot for the price. I also had a few xiaomis before and I don't have complaints. I checked the realme 9 pro but the xiaomi was cheaper and has better specs overall.
Thanks for the update - Good luck with the new phone.
hi to all, the device is in EDL mode?
So it means you cannot acces recovery, fastboot mode and also you cannot boot your phone!
Mr Dasher said:
I tried plugging the phone into my computer to see if it was recognized by WIndows but nothing. I have contacted them via email and Aliexpress message board but these Chinese companies aren't known for having good customer service. It's a shame for I quite like the phone. May I ask what you bought as a replacement?
Click to expand...
Click to collapse
install the qualcomm driver for the phone
Hi mate. I have no idea.. I couldn't do nothing.. Well in my case I already send it back so..
Topo's said:
hi to all, the device is in EDL mode?
So it means you cannot acces recovery, fastboot mode and also you cannot boot your phone!
Click to expand...
Click to collapse
Thanks for the response. After setting up a new Oneplus 9 Pro by changing the the firmware from T-Mobile to basic Global. I'm able to get into EDL mode . I also have the correct drivers installed in WIndows so it appears in the Device Manager when in EDL mode. I also have the current firm. I just need a working version of the MSM program.
VerVistas said:
Hi there. I came here on last resort.. Yesterday after I did the last update of the security patch (december 2022 I believe), the phone rebooted just fine, and after about 5-10 minutes it froze. Screen on and simply froze. A bit after the screen went off. After 2 -3 minutes like this I tried to force restart it by holding the power button and It did vibrate altough the screen didn't turn on and it didn't reboot.
Today and even after having it charging for a while it's just dead.. Doesn't turn on, can't put in it recovery mode also, nothing.
I have no idea what happened but I can't do much.
Any advice guys?
Appreciate in advance.
Click to expand...
Click to collapse
Message me on Instagram deepak._ydv
Something similar happened to me yesterday twice, device suddenly turned off while I wasn't even looking, and wouldn't turn on again no matter how much time I'd press the power button.
However; When I held Power Button + Volume UP for a few seconds, the device did turn ON back again.
rtkpX said:
Something similar happened to me yesterday twice, device suddenly turned off while I wasn't even looking, and wouldn't turn on again no matter how much time I'd press the power button.
However; When I held Power Button + Volume UP for a few seconds, the device did turn ON back again.
Click to expand...
Click to collapse
Geez this worked perfectly, you are a lifesaver!! After holding the Power Button + Volume Up my device did turn ON. I faced all similar issues mentioned in this thread related to booting after the screen went black while using it.

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