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Tutorial: iPhone 7 Blurred Screen Repair

We are going to fix a iPhone 7 with blurred screen. How shall we step and repair the common problem step by step? Let's have a look in the article.


After receiving the cell phone, what we need to do first is to test it and confirm the fault.

Disassemble the phone with iPhone 7 opening tools carefully and observe the main board. We found this motherboard is a pretty board, according to the previous maintenance experience, the iPhone display base needs to have a test with Fluke digital multimeter.


It is found that the resistance of the 17th pin showing the J4502 resistance of the base is infinite, and the normal resistance should be more than 400. This pin is powered by the screen 1.8V.

This point is connected with the inductance DL3906 through reading on WUXINJI schematic diagram. The other end of the inductance is measured normally, so we replace a new inductance FL3906.


Reinstall the iPhone 7 to have a test, failure is solved perfect now!

Any other professional cell phone repair tutorials, please check on www.vipfixphone.com

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