Recently, there are a lot people complain
that their iPhone 6 can't be turn on and continuously restarts, it is seriously
affected their daily use of the phone because of iPhone 6 not working.
The
phenomenon is that when you turn on your iPhone 6, the Apple logo arise and
disappear and is has been circulating in this way. It really make you annoy, but
you have no idea what to do. Now you can get rid of this troubled, because Vipprog have the solution to fix it.
- disassemble the LCD screen assemble by phone opening tools and then test the voltage of the battery with digital multimeter. After detection, the battery voltage is shown as 4.21V and the battery test signal voltage is 2.02V. So we can judge the battery is normal and keep going to find the real problems.
- fault detection for iPhone 6, put iPhone 6 connect the computer, try to restores by iTunes but is failed and occurred an unknown error, so we can know that the NAND flash or CPU is cracked.
- carefully unload the iPhone 6 motherboard and fix it on the PCB Fixture Platform, then carefully remove the NAND flash chip from the motherboard.
- using solderiron, knife, BGA solder paste flux, rosin, solder wick and clean brush to clean the bonding pad.
- put the Nandtest fixture connect the computer and transfer the data from the old NAND flash to a new one, then reball the new NAND flash chip GBA.
Finally, reassemble the parts removed from
the iPhone 6, and then connect the iPhone 6 to computer, now it can be restored
by iTunes and it works well, the trouble of the iPhone 6 are be resolved.
the video of iPhone 6 keeps reatarting and fix it's error 9 14 40
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