What should I do with the iPhone 6S black screen?
A customer sent an iPhone 6S motherboard, and his iPhone6S screen showed half of the black screen. The fault still exists after the power is turned on. what should we do?
After receiving the board, we are going to install to test it first, the right screen is not bright as the left side, so the iPhone 6S screen fault is confirmed now. As shown in picture.
First check the display base J4200, we didn't find any problem from the appearance.
When the resistance to the ground is measured by a Fluke digital multimeter, the resistance values of 1# and 3# are the same, and there is a connection between 1# and 3# by measuring, it is judged that there is a tin link between the two pin.
Clean the black glue around the base, tin ball is seen between the two circuit, leading to the two circuit connecting. This is the main cause of the failure of half black screen. As shown in picture.
At last, gently remove the tin ball and install the iPhone 6S motherboard to test.
The half black screen failure is solved now. All other functions tested are also normal. Repair is over!
If you have any suggestions about this problem, please contact us on www.vipfixphone.com.
First check the display base J4200, we didn't find any problem from the appearance.
When the resistance to the ground is measured by a Fluke digital multimeter, the resistance values of 1# and 3# are the same, and there is a connection between 1# and 3# by measuring, it is judged that there is a tin link between the two pin.
Clean the black glue around the base, tin ball is seen between the two circuit, leading to the two circuit connecting. This is the main cause of the failure of half black screen. As shown in picture.
At last, gently remove the tin ball and install the iPhone 6S motherboard to test.
The half black screen failure is solved now. All other functions tested are also normal. Repair is over!
If you have any suggestions about this problem, please contact us on www.vipfixphone.com.
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