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Showing posts from September, 2019

iPhone 11 motherboard teardown - what to do?

Since the iPhone 11 released, the phone repair tools factory has started operations, they started dismantling the iPhone 11 to understand its construction, and began to prepare the tools to repair it, here is the iPhone 11 motherboard teardown process. First use phone opening tools to disassemble the iPhone 11, disconnect the iPhone 11 battery, take off the iPhone 11 motherboard. Now we need to separate the iPhone 11 motherboard double layers. Use hot air gun to heat the iPhone 11 motherboard for a while, and then use Titanium Alloy Tweezers to remove the upper layer board. Observing the iPhone 11 motherboard, we can see that the iPhone 11 baseband CPU is Intel version. Test the iPhone 11 upper layer logic board to check if it's same as the previous iPhone can be turned on by a single logic board. After testing, yes, it can, just be baseband. The iPhone 11 uses the fastest A13 chip,put iPhone 11 motherboard under a Trinocular Microscope , and then use hot air gun and B...

Solved: iPhone 6S touch screen doesn't respond to touch

When we touch the iPhone display screen, it has no response, the iPhone 6S touch screen doesn't response to touch. This touch failure occurs after water damage, we tried to fix it by replacing the iPhone screen, but not working. Is there something wrong with the motherboard? Disassemble the iPhone 6S, remove the iPhone touch screen, disconnect the iPhone battery, and then take off the iPhone motherboard. Use Fluke 15B+ digital multimeter to measure diode data for iPhone display touch connector J4200 some Pins, the diode data and voltage are normal. As we know,  the abnormal iPhone 6S 3D Touch function also will cause iPhone touch screen can't be used. Sign in to the ZXW online account to check iPhone schematic diagram, we saw that the 3D Touch is connected to the iPhone fingerprint connector. Use digital multimeter to measure the diode data for the iPhone fingerprint connector, it's found that the diode data for AP_TO_TOUCH_RESET_L reset signal is smaller than...