Skip to main content

A8 CPU issues: get solution to fix iPhone 6 A8 CPU

An iPhone 6 accidentally dripped into water, and  then it has something wrong.  What's going on?  We need to check it, and get solution to fix it.

After checking, the error details are UMT board can't connect with 80mA,  measure the reset data, it only has 0.8V,  and it is no short circuit after measuring the value.  Replacing the  iPhone USB Control IC (U1700),  iPhone display touch IC (U1501) and replacing PMU, the result is same, resistance value is also normal. 

Now, we remove the A8 CPU, the reset value is normal 1.8. However, after install the CPU underlayer, the data is lower again.  We judged the iPhone 6 CPU is damaged. The reset pullup resistance R0206 is 100K, and the voltage becomes 1.6V after the change of the 2.2K resistance.


 The upper cover current is a little higher, and the  iPhone screen is not displayed when install to test the iPhone 6 device. The  1505TA DC Power Supply required for the measurement screen is normal, connect Ace assistant which shows "please unlock the device", so it indicates that the system has been entered, and the failure is from CPU. Then PP1V0 is measured short circuit, a few points  on CPU are all short circuited. Now, we have to install the CPU back.

Directly connect 1.0V to this point, the current is 350A and the voltage is 0.8V. It seems hopeful, so we connect it with PP1V2_SDRAM directly.

Finally, assemble the iPhone 6, and reboot it, now the iPhone Display Touch Screen can be lit smoothly, and the data is kept. 





Comments

Post a Comment

Popular posts from this blog

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

How to install K-TAG 7.003 KTM100 K-Suite 2.13 software

China Clone KTAG 7.003 firmware has newly launched, New2.13 KTM100 software is the replacement of 2.13 K-Suite which brings brand-new interface and makes easier operation. Here, vipprogrammer.com share the installation guide of K-TAG 7.003 K-Suite 2.13 software, this step-by-step instruction guide will help you. Software: KTM100 V2.13 (better than Ksuite software) Firmware: V7.003 Language:  English, Italian, Portuguese NOTE: KTM100 software can only be work with KTAG firmware V7.003 New KATG KTM100 V2.13 Firmware 7.003 new added feature: 1) New add BMW F chassis petrol and Mercedes-Benz W222 models 2) Software is much easier to use and is very stable. After you connect the car, just choose the large type, KTM100 will recognize the ECU detailed type via ID automatically. Disable both local network and wireless connection (Very important!!!) 1) Install KTAG KTM100 V2.13 setup Open KTM100 setup in the CD software on My computer Open KTM100 file, then open KTM100 English file...
Post a Comment
Read more

Install instructions for 2015.R1 autocom CDP Diagnosis software

2015.R1 autocom cdp software is available, 2015.1 autocom cdp software need to be activated by keygen, here, we share Install instructions for 2015.R1 autocom cdp software, help you how to crack autocom cdp software on you pc Tips: 1.) TURN OFF your internet connection! 2.) Shutdown antivirus software! The tutorial of Installing 2015.R1 autocom cdp Step 1: download autocom cdp software or insert the dvd to your pc. Step 2: pls download upgrade file for 2015.1 autocom cdp software, then copy all file and folder replace to autocom cdp(new vci) install Folder. Instructions for 2014.R1 autocom cdp Diagnosis software Step 3: Run autocom cdp software agian, the Activation menu will be showed, PLS DO IT by activation guide for 2013.R3 autocom cdp software. Step 4: Choose - click “YES” button to save autocom cdp FileActivation file, send this FileActivation.xml file to us (PLS DON’T USING 2013.3 Autocom delphi KEYGEN GET Activation FILE). Instructions for 2015.R1 autocom cdp Diagnosis softwar...
8 comments
Read more