iPhone 6S Plus backlight repair tutorial
The customer sent an iPhone 6S Plus. When the iPhone 6S Plus in normal use, the screen of the mobile phone is half black. After analysis, we know that such a fault is generally a backlight circuit problem.How to repair it? Here is the repair tutorial.
Because the last repairman described the iPhone motherboard has connected tin, so there was no direct test on DC power supply.
Disassemble the iPhone 6s Plus and observe the main board under LED Stereo Microscope, we find there is connected tin in the fingerprint base.
After cleaning up the board, we connected the power supply for testing and found that the fault was a half-black screen, which is consistent with the customer description.
When use Fluke digital multimeter to measure the ground value of the iPhone touch base , it shows that the 6 pin of the display base are infinitely large, indicating that the pin is broken.
6 pin is backlight power supply, which is through the FL4211 inductor to the backlight chip, since the FL4211 inductor plate has been destroyed by the last repairman, we can not short connect again, can only fly jumper wire from the connected components.
So we connect from C4023 to C4211, as shown in picture.
Turn on the iPhone 6s Plus to have a test, all the functions are normal now!
I hope this article is helpful to you.If you need any tools to repair your iPhone, please visit www.vipfixphone.com.
Because the last repairman described the iPhone motherboard has connected tin, so there was no direct test on DC power supply.
Disassemble the iPhone 6s Plus and observe the main board under LED Stereo Microscope, we find there is connected tin in the fingerprint base.
After cleaning up the board, we connected the power supply for testing and found that the fault was a half-black screen, which is consistent with the customer description.
When use Fluke digital multimeter to measure the ground value of the iPhone touch base , it shows that the 6 pin of the display base are infinitely large, indicating that the pin is broken.
6 pin is backlight power supply, which is through the FL4211 inductor to the backlight chip, since the FL4211 inductor plate has been destroyed by the last repairman, we can not short connect again, can only fly jumper wire from the connected components.
So we connect from C4023 to C4211, as shown in picture.
Turn on the iPhone 6s Plus to have a test, all the functions are normal now!
I hope this article is helpful to you.If you need any tools to repair your iPhone, please visit www.vipfixphone.com.
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