Skip to main content

DIY FIX: iPhone 7P charging function not working properly

The iPhone 7P charging function now working properly, what's going on? Here we can DIY FIX it. 

What's the performance of the iPhone charging function not working properly?

1.  the iPhone 7 Plus won't charge at all
2. the iPhone 7 Plus can't connect to computer
3. the iPhone 7 Plus can be charged when it's turned off, but not after boot
4. the iPhone 7 Plus leaks when iPhone 7P is on standby
5.  less iPhone battery percentage when it in charging
6.  stuck on white Apple logo
7. auto reboot


How to DIY Fix it?

1. Disassemble the iPhone 

Use phone opening kits to disassemble the iPhone, carefully remove the iPhone motherboard. 

2. Check iPhone 7P schematic diagram

Connect WUXINJI Dongle to computer, and then open the WUXINJI software to check iPhone schematic diagram.

5V charge voltage PP5V0_USB  sent by the tail-plug interface，one circuit is sent to iPhone charge IC, one circuit is sent to iPhone USB control IC. 

3. Measure the iPhone charge voltage

Use multimeter to meausre the the 5.0V voltage (PP5V0_USB) next to the iPhone charging IC with Fluke 15B+ Digital Multimeter to check whether it exists. If not, then you need to replace the new iPhone tail plug flex cable. If yes, continue to check.


Measure the 5.0V voltage (PP5V0_USB) next to the iPhone USB control IC with multimeter to check whether it exists. If not, then you need to use QUICK 861DW hot air rework station to solder the jump wire from 5.0V voltage (PP5V0_USB) next to the iPhone charging IC to 5.0V voltage (PP5V0_USB) next to the iPhone USB control IC. If 5V is exist， then you need to replace the iPhone USB control IC and iPhone charge IC.

4. Re-install iPhone and test 

After finish the repairing, re-install the iPhone and then test it, now the iPhone 7 Plus charging function back to normal, it works properly. 
Labels:

Comments

Post a Comment

Popular posts from this blog

Complete Guide to Replacing Your iPhone Battery at Home

  Has your iPhone battery started showing the dreaded signs of age, like frequent charging, rapid draining, or even an untimely shutdown? Are you considering a battery replacement but feeling deterred by the potential cost or hassle of a trip to the Apple Store? Don't worry; with the right guidance, you can replace your iPhone battery at home quickly and safely, sparing your wallet and ensuring a future of longer charge cycles for your beloved device. Whether you have the latest model or an older version, we'll walk you through the process step by step. But before we get into the nitty-gritty, here's why a battery replacement might be in your best interest. Why You Should Replace Your iPhone Battery The lithium-ion batteries in our smartphones are not immortal. They degrade over time due to a variety of factors, such as age, temperature, and the number of charge cycles. Replacing an old battery can provide several benefits: Improved Performance: A new battery can result ...
Post a Comment
Read more

User Manual: JC V1 Programmer to fix iPhone light sensor/vibrator

As we know, the light sensor and vibrator is very important for iPhone screen. If you want to replace the iPhone screen, you also need to transfer the original screen data to the new iPhone screen(iPhone 8 to iPhone Xs Max),so you can make sure the new iPhone screen will work fine. Here is a  JC V1 programmer  to fix iPhone light sensor and vibrator problem (for iPhone 7- iPhone Xs Max), it also can repair iPhone baseband eeprom IC or iPhone logic eeprom IC problem. The JC V1 Programmer comes with 24-inch HD display screen, three-color LED indicator light, two small connecting seats (for connecting function panel) , two buttons and one function panel (including light sensor/touch connector, baseband function connector, vibration connector) It support 2 languages (Chinese/English) and three lines of code (read/write/burn/save), the function panel can be changed, the software can automatically update What’s the functions? - Repair iPhone Light sensor/ true ...
1 comment
Read more

Here: JC P11 iPhone Nand Test Fixture Specification Details

JC P11 iPhone Nand test fixture is on sale now, some users still confused for it, what's credit points for JC P11? Why it's cheap? As we know, JC P11 BGA110 programmer is the latest programmer for iPhone   iPhone XS Max,XS, X, 8P, 8  and iPhone 11 Pro max/pro/11, which is made by JCID factory.  Here are some  specification details for JC P11 programmer . 1. Main Functions. - Support to modify and write BGA110 NAND SYSCFG data (NAND Flash underlying data, such as SN/BT/WIFI and others); Unbind WIFI. - It doesn't require restoring the firmware for brand-new Nand flash, the SYSCFG data can be written directly. - Repair the Error 35 during firmware restoring for BGA110 NAND - Repair the DATA Error for BGA110 NAND - Support iPhone 8/8P/X/XS/XS Max currently, free software upgrade to support 11-11Pro Max in the future - Initiate the network charging mode, can purchase the points according to the demand, which greatly saves the equipmen...
Post a Comment
Read more