Apple 7s plus black screen, reboot is useless, what is the problem

iPhone7 black screen of death causes: system software crash, fall or water ingress, use of high imitation charger, factory quality and other problems.

First of all, you need to try to force restart the boot, here's how:

1. Press the "Power Button" + "Volume Down Button" at the same time.

1. Replace the original screen to test whether it can be turned on.

2. If it can't be turned on, it means that the motherboard is faulty. Motherboards have a lot of chips, capacitors, and power lines.

To determine which component failure causes the black screen, it is necessary for professional maintenance personnel to do it, and the method is roughly as follows:

1. By detecting whether the current value of the motherboard is too large, if it is too large, it proves that one or some components on the motherboard are caused by short circuit.

2. Take the lavender rosin method to test which component of the motherboard is too high, and professionals can see it by visual inspection.

3. After determining the specific short-circuited components, replace the short-circuited components through value shifting and welding technology.

4. Press the power button again to boot the test.

If it is successful, the problem is solved, and if it is unsuccessful, there are still other short circuits, and the above steps have to be repeated.

This process requires a very patient and experienced chip repair technician to make a perfect repair the first time, otherwise it will have to be restarted.

I have been in the professional maintenance department of Guangzhou Apple, and I have seen a lot of this situation.

Many small local repair shops have poor skills, and the machines that could have been repaired have repeatedly repaired the motherboard to a pulp.

After plugging in the charging device, if it can be turned on, it is a problem with the battery, and you can buy a battery replacement.

If it's not a battery problem, then see if there is a problem with other hardware, such as a broken screen or a black screen caused by water inside, this must be sent for repair.

How to check if there is water]: iPhone put the liquid touch indicator on the SIM card, after taking the card, if you see a red or pink dot, it means that there is water, under normal conditions, it is white or silver.

Other methods]: You can connect your iPhone to the computer and press the home+power button for about 10 seconds to appear the recovery option, press restore OK, Apple iPhone7 Plus or iPhone7 restore.

There are generally 3 ways to turn on the iphone7 plus with a black screen suddenly, and the specific methods are as follows:

1. The first method is to try to turn the phone back on, press and hold the power button and the home button at the same time to turn the phone back on until the power on sign appears.

2. The second method, try to charge the phone with a wireless charger, and then press these two keys at the same time, which is to detect whether the battery is automatically shut down due to the sudden use of the battery.

3. The third method, the iPhone usually has a built-in liquid contact indicator, which is normally a white or silver dot, and when it comes into contact with water, the dot will turn all or the rest of the mask into red or pink. If this is the case, it can be sent to a designated repair point for repair. The above is the specific way to solve the problem that iphone7 plus suddenly has a black screen and can't turn on.

Usually, the Apple phone suddenly has a black screen and cannot be turned on, which has the following factors: system failure, screen display failure, cable failure, motherboard failure, and battery failure. Most of the time, the black screen of the mobile phone is a bug in the system, and it is rare to have a black screen due to hardware problems. Here's how to fix it:

Step 1: On your PC or Mac ** and install Tenorshare Repair Tool (REIBOOT - iOS), then launch the program. If you have any other questions, you can contact customer service directly (top right corner of the page).

Step 2: Connect your iPhone to the computer with a data cable, if there is a message prompt, tap "Trust" on your iPhone until the main interface of the software appears, then it means that the connection has been successful.

Step 3: After the connection is successful, if your device is in recovery mode, Tenorshare iPhone Repair Tool will automatically detect your iOS device, and the "Exit Recovery Mode" option will be highlighted, click "Exit Recovery Mode" to fix it.

Step 4: In less than 1 minute, your device will be in recovery mode and your iPhone screen will display the "Connect to iTunes" logo.

If you want to know more about iOS system repair for iPhone, we recommend choosing Tenorshare Repair Tool for iPhone. Tenorshare Niu's iPhone Repair Tool quickly fixes various system issues on iPhone iPad iPod Appleette with one click, easily fixes 150+ iOS devices with white apple, black screen, non-stop restart, stuck in recovery mode, update failure, can't boot and other system issues; At the same time, one click to enter and exit iPhone recovery mode for free, fix in standard mode without data loss; It has won the National High-tech Award, and the product quality is guaranteed. [Tap to quickly repair your phone].