Got the iPhone 6 Plus which carried two fault: the rear camera won't open while flashlight can't be turned on.
As of both of them are connected with CPU, so we need to disassemble the iPhone to check the fault source.
Following the repair process:
Picture 14-8-1
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Use JM-P01 Essential Phone Repair Toolkit to remove the iPhone motherboard, and observe it under the 7-45X 180X Stereo Zoom Microscope, we found the U3200 chip had traces of moldy by water
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With the help of QUICK 861DW and Precision Titanium Alloy Tweezers, we remove the chip smoothly and quickly. And then we found out that the U3200 chip 4-pin pp_vcc_main powered pin had corroded.
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Measure the diode data of this pin with Fluke 15B+ Digital Multimeter, it is infinitely large. Check the iPhone schematic diagram found that PP_VCC_MAIN is through the FL3202 inductance input to the U3200 chip 4 pin. The FL3202 inductance has been corroded under the microscope observation.
Picture 14-8-5
Here it means we finished the repair process, and now we need to mend the U3200 Power supply IC well to install iPhone and test. We can see the fault was repaired, the function shows well.That's ending
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