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iPhone 7 battery replacement causes screen not to display maintenance
Machine model: iPhone 7
Fault phenomenon: replace the battery by yourself, causing the screen of the mobile phone not to be displayed.
iPhone 7 battery replacement causes the screen not to display maintenance Figure 1.
Maintenance process: the mobile phone screen does not display due to the customer’s battery replacement, which is likely to be a fault during the installation process.Remove the machine, connect DC power supply to see that the starting current is normal, but the mobile phone screen does not display.
Replace the screen fault is still, it seems that the screen is not broken. It was found that Screw hole beside the battery BTB connector was broken and fell off under the microscope.
iPhone 7 battery replacement causes the screen not to display maintenance Figure 2.
It seems that the fault point has been found.Screw hole is broken through, and the bottom wiring is broken. Next, the scraper slowly scrapes off the peeling place, and breaks Jump wire,Solder Mask, UV curable in loose places.
iPhone 7 battery replacement causes the screen not to display maintenance Figure 3.
Connect the screen to start the test, the display returns to normal, the touch is normal, and the function is normal. The maintenance is over.
iPhone 7 battery replacement causes the screen not to display maintenance Figure 4.
