1. Android CN's Avatar
    My S7e (Exynos) suddenly stopped working after an overnight update. At first it was stuck on a boot loop, I tried to force reboot it (vol down + power) and the screen went black, with only the blue led light blinking. Eventually that died out as well and now the phone is an unresponsive state. (No button combo works - no recovery mode, no download mode, computer doesn't detect it, but the wireless charger does)

    Changing the battery did not work for me, as the phone won’t power on and remains unresponsive. Seems like there could be a problem on the motherboard? Is it even possible for a hardware issue to crop up after an update?? The phone wasn't overeating or having any noticeable issues prior to the update.

    Has anyone who's faced this - managed to revive their phones, even if only for a short while? I really want to get some data off of the phone.
    06-22-2020 12:38 AM
  2. B. Diddy's Avatar
    Unfortunately, that blinking blue light is often a bad sign -- it could mean a problem with the motherboard or the memory chips. You've already tried pressing and holding Power for at least 30 seconds?
    Laura Knotek likes this.
    06-22-2020 01:14 AM
  3. Android CN's Avatar
    I have and nothing works! What does the blinking led light mean? I just wanted to try rebooting the phone as it was on a boot loop, or if that didn't work try getting it into download mode, but the screen just went black with only the led flashing. Does the whole motherboard have to be replaced you think? I really want to get some data off the phone!
    06-22-2020 06:11 PM
  4. B. Diddy's Avatar
    From what I can tell based on experience on the forums, the blinking blue LED is associated with either motherboard or memory failure. If you weren't keeping your important data backed up or synced on a regular basis, then all you can do is bring it to a forensic data recovery specialist (which often costs a lot). Sorry!
    06-22-2020 06:23 PM
  5. mustang7757's Avatar
    I have and nothing works! What does the blinking led light mean? I just wanted to try rebooting the phone as it was on a boot loop, or if that didn't work try getting it into download mode, but the screen just went black with only the led flashing. Does the whole motherboard have to be replaced you think? I really want to get some data off the phone!
    If you think the phone worth keeping take to repair center have them run a diagnostic
    06-22-2020 07:56 PM
  6. Android CN's Avatar
    Would a repair centre be able to pinpoint what component failed after running a diagnostic? Also would running a diagnostic be expensive?
    mustang7757 likes this.
    06-22-2020 08:47 PM
  7. Android CN's Avatar
    From what I can tell based on experience on the forums, the blinking blue LED is associated with either motherboard or memory failure. If you weren't keeping your important data backed up or synced on a regular basis, then all you can do is bring it to a forensic data recovery specialist (which often costs a lot). Sorry!
    I do have most of the data backed up, but was keeping some things just on the phone, which wasn't such a great idea in hindsight. I just never expected it to stop working out of the blue, all my old android phones still work almost a decade later. Thanks for the suggestions regardless!
    06-22-2020 08:48 PM
  8. mustang7757's Avatar
    I do have most of the data backed up, but was keeping some things just on the phone, which wasn't such a great idea in hindsight. I just never expected it to stop working out of the blue, all my old android phones still work almost a decade later. Thanks for the suggestions regardless!
    You original owner?
    It has the original battery?
    06-22-2020 08:48 PM
  9. Android CN's Avatar
    You original owner?
    It has the original battery?
    Yes and yes! The battery has never given me any trouble prior to this though, no overheating and it lasted me close to a whole day with my usage.
    06-22-2020 08:52 PM
  10. mustang7757's Avatar
    Yes and yes! The battery has never given me any trouble prior to this though, no overheating and it lasted me close to a whole day with my usage.
    It's possible it's your battery, it's going on 4 years they don't last forever, take example your car battery if you stretch it out 4 to 6 years it can stop at any moment without notice.
    06-22-2020 08:55 PM
  11. Android CN's Avatar
    It's possible it's your battery, it's going on 4 years they don't last forever, take example your car battery if you stretch it out 4 to 6 years it can stop at any moment without notice.
    Most definitely! I'm willing to change the battery and give this a try, but found that this same issue has been plaguing a few other S7 users as well after the last update and others with phones exhibiting the same symptoms have changed the battery and the phones have remained unresponsive. Would running a diagnostic be expensive?
    06-22-2020 08:58 PM
  12. mustang7757's Avatar
    Most definitely! I'm willing to change the battery and give this a try, but found that this same issue has been plaguing a few other S7 users as well after the last update and others with phones exhibiting the same symptoms have changed the battery and the phones have remained unresponsive. Would running a diagnostic be expensive?
    I'm not sure, but you can always get a quote
    06-22-2020 09:01 PM
  13. Android CN's Avatar
    I'm not sure, but you can always get a quote
    Thank you! I just find it to be hell of a coincidence/stroke of bad luck that the battery should fail at the exact instant that the system sort of crashes.
    mustang7757 likes this.
    06-22-2020 09:07 PM
  14. mustang7757's Avatar
    Thank you! I just find it to be hell of a coincidence/stroke of bad luck that the battery should fail at the exact instant that the system sort of crashes.
    Electronics sometimes are like that
    06-22-2020 09:12 PM

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