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A phone made by Samsung running Android 6.0 1.4GHz Octo-Core Qualcomm Snapdragon 430 SoC 1280x720p 5" Display 16GB of onboard storage (expandable)

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Why is my screen/display black and unresponsive

My Samsung J3 Emerge SM-J327P has a few minor cracks on it, but the display is black and unresponsive. I can hear it vibrate when i power it on and when the phone is finished booting up i can hear my notifications and other noises, but the screen is completely black. Sometimes the phone will get stuck in a boot loop and wont turn on fully.

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When the phone is on and you can hear notifications etc, try shining a torch at an angle close to the screen to check if you can detect any images on the screen at all. They will be very faint if they are there at all, so trying this in a darkened room may help to see them.

If there are images then there is a backlight problem with the screen or perhaps the backlight power supply to the screen on the systemboard.

If there are no images then it is either a screen problem, a screen flex cable connection problem or a systemboard problem.

As a DIY repair for either of the above situations all you can do is to open the phone and check that the screen cable connection to the systemboard is secure and if so, is to then temporarily replace the LCD display to check where the problem may be i.e. display or systemboard.

Here’s the ifixit Samsung Galaxy J3 Emerge Screen Replacement guide, which may help.

Replacement display assemblies are available online. Just search for Samsung J3 Emerge SM-J327P LCD display to get results for suppliers that suit you.

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Thank you. This was extremely helpful and well written!


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