S7 Black Screen + Blue LED - Samsung Galaxy S7 Questions and Answers

Hi All,
I wonder if you may be able to help. This morning we discovered one of our S7 phones was a black screen with solid blue light. It seemed completely unresponsive to touch, wouldn't wake. etc. The home, volume and power buttons seemed to do nothing. I plugged the phone into the computer, it didn't pick up a USB device.
Phone is stock from EE in the UK. No custom anything. Model: SM-930F 32GB.
EE and Samsung couldn't suggest anything to help.
We tried Power + Volume Down - This results in one of the following;
A (A battery with the current fill %) this happens when plugged in
B (Samsung Galaxy S7 powered by android) loading screen which then cycles or returns to a black screen with solid blue LED
We also tried Power + Volume Down + Home button. This does load the Warning screen about using a custom OS.
We have next day replacement warranty on the phone, i don't need to fix this phone. We only want to try and recovered some data and photos
Any help appreciated.
Kind Regards.

Shannaramoon said:
Hi All,
I wonder if you may be able to help. This morning we discovered one of our S7 phones was a black screen with solid blue light. It seemed completely unresponsive to touch, wouldn't wake. etc. The home, volume and power buttons seemed to do nothing. I plugged the phone into the computer, it didn't pick up a USB device.
Phone is stock from EE in the UK. No custom anything. Model: SM-930F 32GB.
EE and Samsung couldn't suggest anything to help.
We tried Power + Volume Down - This results in one of the following;
A (A battery with the current fill %) this happens when plugged in
B (Samsung Galaxy S7 powered by android) loading screen which then cycles or returns to a black screen with solid blue LED
We also tried Power + Volume Down + Home button. This does load the Warning screen about using a custom OS.
We have next day replacement warranty on the phone, i don't need to fix this phone. We only want to try and recovered some data and photos
Any help appreciated.
Kind Regards.
Click to expand...
Click to collapse
Hi, try turning off the App Power saving mode!! i had these problems also and it was caused by a app that cant handle the always on setting so when you use that app and then turn the phone in standby it will cause the freeze/black screen

Were you ever able to fix this problem? I just had it happen to me and I'm in the same situation.

This just happened to me. After an hour spent with tier II tech support, no progress.
You need to let the phone die completely. Once it's dead (and the blue light) is no longer dead, plug the phone into an OEM walk charger. In my situation,my s7 edge would vibrate to recognize the charge, than reset - before it could even build up a charge (so I thought). I left it alone for an hour or so, and amazingly, it booted up like normal.
Good luck!

I have this problem. How long will it take the battery to drain from fully charged with just the blue light on.

This just happened to me as well. I hope draining the battery works. This occurred when my battery drained and the phone turned off. When I tried to turn it back on after letting it charge for a few minutes it looked like it started to boot, then went to a black screen with a solid blue light. No button combination has any effect.
EDIT: Waiting until the battery died and then attempting to charge the phone has had no effect. No combination of keys has an any effect, either.
EDIT #2: I've taken my phone into the Verizon store. They tell me it's an issue with software and the phone is dead. They said this is "rare". Considering what I see here, I can't say how rare I find it. I have insurance, so they're replacing it, but now they're not keeping up their end of the deal on when the replacement phone will be delivered.

Flash it!
I had the exact same symptoms. What did the trick for me was draining out the battery and then fully charging it, WITHOUT TURNING ON the phone. If you do turn it on, you need to drain it out again. When the phone was fully charged I booted up the download mode and flashed the stock firmware with Odin. That was it, my Galaxy S7 was fully functioning again.
Hope this helps someone out there.

Just experienced kinda the same problem.
S7 died overnight on the charger. I was lucky to wake up on my own.
Just blue led.
I let it drain out over the day so it turned off (vol- + power no working).
Charged it a bit and try to go to recovery: loaded recovery but completely frozen.
I let it drain again and recharged it after it turned off.
Then I went to DL mode and reflashed latest carrier stock rom. AP. CP. BL. CSC. All.
Flashed fine! After rebooting it said "erasing...", rebooted and is back to the blue led only.
Strongly suggesting a hw issue at this point.
I'll let it drain again, fully recharge it, flash a non branded stock rom. If that wont work i'll probably need to bring it to my carrier on monday. Too bad its friday...
//Phone is r.i.p. even after a re flash of stock fw with full battery it only boots to blue led.
//Phone even deader. No more response in any way.
(some time later)
//Just received the repair report. The mainboard and some minor components were replaced under warranty even though my phone was rooted. Good thing for me it never turned on again.

Related

[Q] RIP to my Sidekick

So today, as i was on my way to work I accidentally held down the lockscreen button and the power menu popped up (I was on Glorious Overdoes V2) in the middle of a text and i pressed reboot accidentally... My phone never rebooted... It was stuck on the black Sidekick 4G/T-Mobile screen and then it would go black, then once again that screen would pop up... I removed the battery and put it back in, and without me pressing any buttons the same screen came back up... I let it sit for a while and after 20minutes nothing changed except the phone got really hot. Luckily I had my OLD Nokia in my car and popped my SIM card in it so that i could continue having a phone. I let The Sidekick sit for 4hours and it was extremely hot and then eventually it just turned off completely (Im assuming the battery drained, it was at 90% 4 hours before.) I got home, plugged it in and it wouldn't even turn on the charging screen. Somebody told me that my Motherboard is fried but I don't know. I called T-mobile and they're going to send me a new phone since it's still in the 1-year warranty period.
Anyone know if they're going to be able to inspect my old device and find out if i rooted/flashed it? because i can't get into it or anything to ODIN
I feel like they will try putting a new battery in it, and if it still wont turn on you should be fine.
It got hot because the CPU was churning over something and couldn't enter a low power state. I bet you could coax the phone into download mode and reflash it.
what do you mean coax the phone into download mode? by using the button combo to get it into download mode when turning on? I've tried that and it doesn't work. I tried rebooting into recovery and that wont work either. Also, it wont charge the battery anymore...
I've always had a hard time getting into download mode, and my phone works fine. I just spent 5 minutes trying different combinations until I got it.
I've heard people say trackpad-power button, volume down-home-power button, volume up/down-put battery in-plug in USB, etc etc etc. But the only method that works for me is to put in the battery, plug in the USB, wait for the charging screen, then hold volume down-trackpad-power, releasing power as soon as the screen goes black
You say your phone is turning on as soon as the battery is inserted? What if you have it plugged into USB first?
I had the exact same problem, I sent it into samsung and they just replaced a part(never told me which one) and it was fixed. I did noticed that when the sccreen was poped open to show the keyboard, it would stop. But it's probably a loose cable like I've read before.
Sent from my SGH-T839 using Tapatalk
Worst case scenario if you can't figure it out here on XDA, you could always sell it on eBay for parts as defective.

[Q] A700-No Response to Power Button

I've failed to find any other posts quite like my issue, so I'm hoping someone would have some guidance on other options to try. Thank you in advance.
My A700 is one month past the warranty and everything was working pretty smoothly. I had rooted it and had the latest CM stable build, 10.1.2. Everything seemed to be working fine. After a few days, I plugged it into the charger as I always do after an evening of playing around on it. The next night, it looked as if it had turned itself off and was completely unresponsive. Unlike most other posts where the tablet is stuck in a bootloop or stuck in recovery or something, I get nothing. The power button has the little indicator light where it is orange when charging, white when fully charged. It is/was white. Pushing the power button (I tried lightly, holding for an extended period, combinations of power button and volume buttons), the indicator will blink orange (as if it going to reboot), but then toggles back to white (when plugged in). Nothing else happens. No vibration indicating the system was booting and no flicker or anything on the screen.
The unit appears to be fully charged based on the indicator light. The system is completely unresponsive when connected to my PC as well.
Any thoughts?
PoohBears said:
I've failed to find any other posts quite like my issue, so I'm hoping someone would have some guidance on other options to try. Thank you in advance.
My A700 is one month past the warranty and everything was working pretty smoothly. I had rooted it and had the latest CM stable build, 10.1.2. Everything seemed to be working fine. After a few days, I plugged it into the charger as I always do after an evening of playing around on it. The next night, it looked as if it had turned itself off and was completely unresponsive. Unlike most other posts where the tablet is stuck in a bootloop or stuck in recovery or something, I get nothing. The power button has the little indicator light where it is orange when charging, white when fully charged. It is/was white. Pushing the power button (I tried lightly, holding for an extended period, combinations of power button and volume buttons), the indicator will blink orange (as if it going to reboot), but then toggles back to white (when plugged in). Nothing else happens. No vibration indicating the system was booting and no flicker or anything on the screen.
The unit appears to be fully charged based on the indicator light. The system is completely unresponsive when connected to my PC as well.
Any thoughts?
Click to expand...
Click to collapse
Well, it's 1 month past warranty.
You can try contacting the service center, and see if they will take it under warranty. If not, well, you'll probably have to take matters into your own hands.
More than likely, something has come disconnected at the PWR button. In this case, you'll have to pop the back cover off and check on your own.
With the A500, many folks have repaired their PWR buttons. You can check the A500 forums, as I remember they had some illustrations or instructions.
I have a 700 service manual I think, somewhere on one of my drives, if you want to go this way, let me know, and I'll upload it.
MD
EDIT: File uploaded to http://d-h.st/ho8 (thks @paugustin )

Phone crashed and won't turn back on

I have a stock phone HTC One (M8) that has never been rooted. Today I pulled my phone out of my pocket and it wouldn't turn on. I've tried:
pressing the power button along with the volume up
Pressing power and volume down
Pressing power and volume up and down
I took it to the Verizon store and they said they would have to ship a refurb out to me. I wanted to check this forum to see if anyone has ideas before I get a refurb.
Thanks in advance!
Simular situation - will not power up or hold charge
Im S-off and unlocked .... I downloaded the new RUU 4.4.4 and everything was fine. the next day the battery drained completely and I plugged the charging cord in. I got the battery icon in the center of the screen and 0% life. The orange light is blinking, but the battery level doesn't change. I cannot get it to power up or get into the bootloader. Once I unplug the power cable the unit doesn't power on. if the keep the unit plugged In for a power source I'm still unable to boot. I'm totally out off ideas ... can I get someone to respond to help me out in this desperate time.
devilman30 said:
Im S-off and unlocked .... I downloaded the new RUU 4.4.4 and everything was fine. the next day the battery drained completely and I plugged the charging cord in. I got the battery icon in the center of the screen and 0% life. The orange light is blinking, but the battery level doesn't change. I cannot get it to power up or get into the bootloader. Once I unplug the power cable the unit doesn't power on. if the keep the unit plugged In for a power source I'm still unable to boot. I'm totally out off ideas ... can I get someone to respond to help me out in this desperate time.
Click to expand...
Click to collapse
Can you try a different charger and cable? The blinking orange light is what they do when they are completely dead. Starts out blinking and wont go solid until enough charge is present to actually boot the phone.
I just upgraded to 4.4.4 as well maybe 3-4 days ago. I had been able to charge the phone a couple of times without issue right up until it wouldn't turn on yesterday.
I left the phone off the charger overnight and tried rebooting again this morning, and nothing.
ttown said:
I just upgraded to 4.4.4 as well maybe 3-4 days ago. I had been able to charge the phone a couple of times without issue right up until it wouldn't turn on yesterday.
I left the phone off the charger overnight and tried rebooting again this morning, and nothing.
Click to expand...
Click to collapse
Same here .. Been on the charging cord for a few days without any change in battery %.
Dodat ... Is there anyway to revive the M8 to accept the charge?
ttown said:
I have a stock phone HTC One (M8) that has never been rooted. Today I pulled my phone out of my pocket and it wouldn't turn on. I've tried:
pressing the power button along with the volume up
Pressing power and volume down
Pressing power and volume up and down
I took it to the Verizon store and they said they would have to ship a refurb out to me. I wanted to check this forum to see if anyone has ideas before I get a refurb.
Thanks in advance!
Click to expand...
Click to collapse
Try this:
Battery is fully charged, but the device does not turn on
Plug device into the provided HTC wall charger that came with the device.
Press and hold the Power, Volume up and Volume down keys for 1 - 2 full minutes. The battery should re-calibrate and the device will then turn on.
or
Battery shows less than 0% charge level
Plug device into the provided HTC wall charger that came with the device.
Charge the device until the LED indicator glows solid red.
Attempt to power the device on as usual. If it will not power on, press and hold the Power and Volume up keys for 10 seconds while still on the charger.
I tried this just now, nothing.
When I hook up the charger, I don't get any lights to indicate that the phone is charging.
It's like the phone is bricked, but I haven't messed with any ROMs at all. I'm completely stock and locked.
ttown said:
I tried this just now, nothing.
When I hook up the charger, I don't get any lights to indicate that the phone is charging.
It's like the phone is bricked, but I haven't messed with any ROMs at all. I'm completely stock and locked.
Click to expand...
Click to collapse
I am unlocked but am having the same problem. I've had the phone since almost launch day and it's been fine until now.....all of a sudden it won't charge. I've tried many different cables and chargers that I know work, but nothing gives.
Were you able to figure anything out? Really don't want to have to get a refurb as I don't think I'll be able to get it rooted/unlocked anymore.
edit: After letting it "charge" for about an hour I was able to turn the phone back on. It said the battery was at 30% but was draining like 2% every 15-20 seconds. Looking at the settings it said the battery state was unkown (where it usually says not charging or charging). Something is definitely doing on here, but I have no idea what. I tried rebooting to recovery from the ROM but it just shut off. Now it's doing the same thing again (0%, won't turn on). Ugh!

VZW Galaxy S6 won't turn on

Got a perculiar problem with the S6. The screen suddenly went black with just the blue LED blinking in the upper left hand corner of the sreen. I am assuming the phone went off completely as I cannot access it via the PC also. I have tried all possible button combinations for reset but no luck so far.
Anyone else experience this? Did you find a fix?
Sent from my SM-G920V using XDA Free mobile app
Well the phone is not off if the blue led light is blinking, I've never had it happen to me where the phone didn't come back though. I was using an app one day (YouTube I think) and the app crashed and bugged the phone out to where the screen went black but the led was blinking. I left the phone alone after several attempts of hitting home and power to get the screen to come back on and finally I think I plugged it into the charger and it kind of just fixed it self and has not happened again. This is the scary parts of not having a removable battery.
Sent From My Rooted Galaxy S6
I've got the 128GB and yes I have experienced this as well, twice! I hold down both volume buttons the home button and the power button at the same time, this will put you in maintenance mode. It'll take a couple of seconds holding those buttons but just keep them pressed. Be careful because when it does come on it comes on fast and factory reset is the second selection in that mode. The first time I did it I wiped my phone, the second time it happened I lifted my fingers fast enough not to make a selection. Give that a try and see what happens.
frostysax said:
I've got the 128GB and yes I have experienced this as well, twice! I hold down both volume buttons the home button and the power button at the same time, this will put you in maintenance mode. It'll take a couple of seconds holding those buttons but just keep them pressed. Be careful because when it does come on it comes on fast and factory reset is the second selection in that mode. The first time I did it I wiped my phone, the second time it happened I lifted my fingers fast enough not to make a selection. Give that a try and see what happens.
Click to expand...
Click to collapse
Thanks very much.
Hey guys, i really need someones help. Everything in my life runs on my phone. The phone is Samsung Galaxy Note 5. Its screen is black and there is a blue blinking light. I have tried to hold the volume down and power buttons but it didnt do anything. It doesn't respond even after plugging in.
chaudharysafi said:
Hey guys, i really need someones help. Everything in my life runs on my phone. The phone is Samsung Galaxy Note 5. Its screen is black and there is a blue blinking light. I have tried to hold the volume down and power buttons but it didnt do anything. It doesn't respond even after plugging in.
Click to expand...
Click to collapse
Sounds like you have the same problem as stated in OP. You could try doing what was recommended earlier in the thread. By the way, this is an inappropriate location to put your problem. Read the forum rules
Never rooted.
I am having the same issue. I have tried everything. Factory reset. Reboot/wiped cache and even trying to install verizon's Fireware again as it come only up to the Samsung S6 logo then goes blank. This is now my 4th replacement with Verizon and getting sick of it. How do I fix this? Odin stops at Get Pit mapping then when I do that says it can not install NAND. Using Odin 3.10.6 and 3.10.7. Tried mutli cables and restarted computer as well. This is driving me insane these phones keep doing this.
same problem except nothing comes on. no led, no reset, no computer recognition...
Same issue. Boots into and displays recovery fine and download mode. I can also bring up the safe mode menu ... just can't boot into the OS. Blue light on. I get a response in ADB when powered on, just can't enter any commands due to not being able to authorize access via phone screen.
Update:
Well as strange as it sounds, as soon as I plopped it down on the wireless charger for my S7 the screen came to life. It was at 95% battery prior to. Whatever gremlins got into the gizmos within the wireless charging apparatus seems to have caused this strange occurrence.

N5 won't boot - Battery change

Hey there.
I'm in trouble with my old Nexus 5. As the battery was becoming less and less powerful, I decided to change it ; and so I did ! Get a new one on Amazon, and installed it.
But now, my Nexus 5 refuse to boot. Even when I put the old battery back. I didn't damage anything, all the connexions seem fine, but the N5 refuse to boot (even Recovery Mode). I also try to keep the Power Button on for 30 seconds, or even bang it, but nothing. With the 2 batteries, same result.
When I put the battery off and charge the N5, the screen does turn on ! The battery logo with the lightning sign appears for a few seconds, then it turns off. And on again, and off.
If in this situation (N5 plugged and battery off) I connect the battery (just a simple connector), I have the charging screen (battery icon fulfilling). But then when I tried to boot it, nothing. The screen just turns off and nothing happens. Even the first screen does'nt show up again.
I am really stuck with this issue as I don't know what to do ! Both batteries give me the same result. The old one is supposed to be charged (at least 50%) but nothing happens..
Could the new battery have damaged the phone ?
If you can help me on this one, I would really appreciate it..
Cheers !
When you connect the phone to a computer, is it detected at all? Maybe it is semi-bricked?
New battery could be doa, happened to me before. Also always fully charge new batteries first or you risk making them unable to charge fully or at all.

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