How to repair iPhone 7 blurred screen?

Many users report that the iPhone7 screen is blurry, and we have encountered the same situation. Our customer sent us an iPhone 7 with a blurred screen. In view of this situation,how to repair it? Let's learn how to repair it.





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!

If you need professional tools for mobile phone repair, please contact us at www.vipfixphone.com.

评论

发表评论

此博客中的热门博文

How to install 2015.R3 Delphi DS150E Software

图片
More and more people want to install / activate 2015.R3 Delphi DS15OE Software , but few of people know how to operate. So Today I will teach you some way to solve the problem. Firstly, you should prepare some work, such as: -TURN OFF your internet connection! -Shut down antivirus software! -Delete all files about the old version! Then, you can start ceremonial work, and you can follow my step to complete. Step 1: copy "CARS 2015.R3 " or "Trucks 2015.R3" to your computer. Step 2: run main.exe in "CARS 2015.R3" to activate（if you want to install truck ,please run main.exe in " Trucks 2015.R3 ") - click start - click yes to save FileActivation on desk - use the 2015.3 keygen to active FileActivation - click start again - click no to open the FileActivation actived - wait for install complete,enjoy! If you cnn't run the 2015.3 keygen, please install [net-frame 4.0] from google. If you want to attempt you can try vipprogrammer
阅读全文

New product introduction: JC V1 programmer repair iPhone light sensor and vibrator

图片
Today, we will introduce a new product: JC V1 Programmer, whose main function is to repair iPhone light sensors, touch and vibrators. JC V1 programmers support iPhone 7 to iPhone Xs Max, whose main function is to read, write and restore iPhone light sensors, touch and vibrator data. Do you want to know how to use this device? Please continue reading JC V1 programmer main features 1. 24-inch HD display 2. Tri-color LED indicator 3. Two small connectors (for connecting function panels) 4. A function panel (including light sensor / touch connector, baseband function connector, vibration connector) 5. Support 2 languages (Chinese / English) 6. Support for changing the function panel 7. Software update (automatic) 8. Support for three lines of code (read/write/burn/save) JC V1 Programmer Specific functions - Repair iPhone Light sensor/ true tone function (iPhone 7- iPhone Xs Max) - Repair iPhone touch vibrator function (iPhone 7- iPhone Xs Max) - Read/Write iPhone l
阅读全文

How to repair iPhone 8 stuck on Apple logo

图片
We got an iPhone 8 from a customer and his iPhone 8 card was on the White Apple and could not be opened. What caused it? How to fix this fault? Open the iPhone and the Apple logo displays normally. However, the phone card is on the Apple logo and cannot be fully activated. Connect your phone to your computer and recover from iTunes. Then insert the SIM card and activate your phone. The Home Button gets unresponsive with returning function and the phone fails to activate completely. Disassemble the phone with iPhone opening tool kit(VC862) and disconnect the battery. Then remove the display assembly. Use digital multimeter to measure the power supply voltage of Home Button. The measured voltage value is 3.3V, 1.8V and 2.75V. Normal voltage value for the three are normal. Then, remove the Home button and check if the iPhone fingerprint flex cable is damaged, in fact it is in a normal state. To further confirm the fault point, we replace with a new display assembly. Get the
阅读全文