Help to unbrick my phone or determine what failed so I can replace...

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dasklney

Senior Member
  • Dec 31, 2006
    275
    143
    giang.us
    Hello everyone,

    My phone is unable to turn on, I can see it vibrates when I pressed power button, the screen backlight is on too but nothing happens, the screen is still black, notification light didn't work too.

    I can charge it.

    I can boot to Fastboot mode and connect to the PC to reflash rom via MiFlash (But there is nothing on the screen, it's black on the time, I can see the back light is on too!).

    Please help me fix it or please let me know what maybe failed so I can find components to replace...

    I didn't drop it, and use it very carefully :(

    Thank you very much!
     

    PoseidonKing

    Senior Member
    Mar 18, 2015
    709
    516
    Pune
    Hello everyone,

    My phone is unable to turn on, I can see it vibrates when I pressed power button, the screen backlight is on too but nothing happens, the screen is still black, notification light didn't work too.

    I can charge it.

    I can boot to Fastboot mode and connect to the PC to reflash rom via MiFlash (But there is nothing on the screen, it's black on the time, I can see the back light is on too!).

    Please help me fix it or please let me know what maybe failed so I can find components to replace...

    I didn't drop it, and use it very carefully :(

    Thank you very much!

    Did you try reflashing developer ROMs? Have you unlocked it and flashed custom ROMs previously? Explain the issue in detail.

    Hit Thanks if I Helped You!!!

    Regards,
    PoseidonKing
     
    • Like
    Reactions: dasklney

    dasklney

    Senior Member
  • Dec 31, 2006
    275
    143
    giang.us
    Did you try reflashing developer ROMs? Have you unlocked it and flashed custom ROMs previously? Explain the issue in detail.

    Hit Thanks if I Helped You!!!

    Regards,
    PoseidonKing

    Hi,

    Thank you for replying.

    I've unlocked and flashed Xiaomi.eu MIUI 8 beta rom from the first time I got it (about 5 months ago), then I keep flashing Xiaomi.eu MIUI 8 beta everyweek.

    Few days ago, I got a phone call, picked it up, the phone turned off, I turned it on, got another phone call, the phone then turned off again, and I couldn't turn it on...

    I did try flash MIUI 8 stable rom, MIUI 7 stable rom, and MIUI 8 develop rom but it still can't boot, the screen is just black...
     

    dasklney

    Senior Member
  • Dec 31, 2006
    275
    143
    giang.us
    There is black screen in edl mode with red led notification blinking , try to flash global dev or stable in edl mode and select clean all or flash all

    Yes, I have tried to flash many rom in EDL mode.

    7.6.3 stable.
    8.1.6 stable.
    6.12.15 dev.
    6.12.22 dev.

    Mi flash said "flash successful" but I still see black screen with back light when I press power button to turn the phone on...
     

    mar.ur

    Senior Member
    Oct 30, 2016
    982
    349
    Sosnowiec
    OnePlus 6
    I think it's hardware issue , but even with broken lcd , phone should boot to system , you should hear some sounds etc .
    When you flashed rom , turn on phone and wait 10-20 minutes during the first boot , check what is on the screen via mi pc suit
     
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    dasklney

    Senior Member
  • Dec 31, 2006
    275
    143
    giang.us
    I think it's hardware issue , but even with broken lcd , phone should boot to system , you should hear some sounds etc .
    When you flashed rom , turn on phone and wait 10-20 minutes during the first boot , check what is on the screen via mi pc suit

    It said connecting and 50% process and stay there forever...

    After more than 1 week figure out what was wrong with my phone, I gave up, sent it back to the shop to repair (it's still under warranty but most online store will blame on users and charge for repairing it!), I didn't drop the phone, use it very carefully, even my old G3 which is 2 years old, known for a lot of suddenly dead, still working fine, it seems I will consider a lot when purchasing new Mi phone... and my next phone, for sure, won't be Xiaomi...
     
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    ckflash09

    Senior Member
    Aug 20, 2016
    82
    11
    Flash 7.1.8

    Yes, I have tried to flash many rom in EDL mode.

    7.6.3 stable.
    8.1.6 stable.
    6.12.15 dev.
    6.12.22 dev.

    Mi flash said "flash successful" but I still see black screen with back light when I press power button to turn the phone on...
    Flash miui 7.1.8 fastboot rom via latest miflash,if u can try unlocking bootloader once again using the adb tools! ??
     
    • Like
    Reactions: dasklney

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    • 1
      Hello everyone,

      My phone is unable to turn on, I can see it vibrates when I pressed power button, the screen backlight is on too but nothing happens, the screen is still black, notification light didn't work too.

      I can charge it.

      I can boot to Fastboot mode and connect to the PC to reflash rom via MiFlash (But there is nothing on the screen, it's black on the time, I can see the back light is on too!).

      Please help me fix it or please let me know what maybe failed so I can find components to replace...

      I didn't drop it, and use it very carefully :(

      Thank you very much!

      Did you try reflashing developer ROMs? Have you unlocked it and flashed custom ROMs previously? Explain the issue in detail.

      Hit Thanks if I Helped You!!!

      Regards,
      PoseidonKing
      1
      in fastboot mode the screen works properly or screen is black ?
      1
      I think it's hardware issue , but even with broken lcd , phone should boot to system , you should hear some sounds etc .
      When you flashed rom , turn on phone and wait 10-20 minutes during the first boot , check what is on the screen via mi pc suit
      1
      I think it's hardware issue , but even with broken lcd , phone should boot to system , you should hear some sounds etc .
      When you flashed rom , turn on phone and wait 10-20 minutes during the first boot , check what is on the screen via mi pc suit

      It said connecting and 50% process and stay there forever...

      After more than 1 week figure out what was wrong with my phone, I gave up, sent it back to the shop to repair (it's still under warranty but most online store will blame on users and charge for repairing it!), I didn't drop the phone, use it very carefully, even my old G3 which is 2 years old, known for a lot of suddenly dead, still working fine, it seems I will consider a lot when purchasing new Mi phone... and my next phone, for sure, won't be Xiaomi...
      1
      Flash 7.1.8

      Yes, I have tried to flash many rom in EDL mode.

      7.6.3 stable.
      8.1.6 stable.
      6.12.15 dev.
      6.12.22 dev.

      Mi flash said "flash successful" but I still see black screen with back light when I press power button to turn the phone on...
      Flash miui 7.1.8 fastboot rom via latest miflash,if u can try unlocking bootloader once again using the adb tools! ??
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