How to fix iPhone 6S can not start after fell into the pool
iPhone can't open, what should I do? Recently we received an iPhone 6S, the customer described his iPhone accidentally fell into the pool and could not be opened. Before that, he went to the repair shop for repairs, but it was not repaired. He needs our help.
First, dissemble iphone with iphone opening tool , we saw that the motherboard was flooded with water, we cleaned the water area thoroughly, it seems that CPU Upper also exist fault. After tested resistance and powered on, there is no short circuit. Connect the iphone motherboard to the DC power supply, we find the current value is about 240MA.
Test PP-VCC-MIAN with a digital multimeter, exist phenomenon of short circuit, the resistance is small, only dozens of ohms. Observe carefully, we found that capacitor next to the WIFI chip was black seriously.
Use QUICK 861DW Hot Air Station to remove the capacitor, resistance is tested more than 100 ohms, and the current measured is also more than 100 mA. Due to the large water poured area, it was found that a capacitor on the iphone audio IC also became black seriously.
After removing the capacitor, measure PP-VCC-MIAN, then insert the DC power supply again, the current become more than 30 mA. Test multiple power supply, there is no short circuit, connect to the power supply, we feel a slight heat. So fumigate rosin in the upper part. It was found that power supply portion was hotter than other parts. After removing the display power, the current returns to normal.
After replacing the iphone power IC, the machine can be turned on smoothly and the fault is eliminated. This repair work is successfully completed.
If you need any help ,please contact us on www.vipprogrammer.com.
First, dissemble iphone with iphone opening tool , we saw that the motherboard was flooded with water, we cleaned the water area thoroughly, it seems that CPU Upper also exist fault. After tested resistance and powered on, there is no short circuit. Connect the iphone motherboard to the DC power supply, we find the current value is about 240MA.
Test PP-VCC-MIAN with a digital multimeter, exist phenomenon of short circuit, the resistance is small, only dozens of ohms. Observe carefully, we found that capacitor next to the WIFI chip was black seriously.
Use QUICK 861DW Hot Air Station to remove the capacitor, resistance is tested more than 100 ohms, and the current measured is also more than 100 mA. Due to the large water poured area, it was found that a capacitor on the iphone audio IC also became black seriously.
After removing the capacitor, measure PP-VCC-MIAN, then insert the DC power supply again, the current become more than 30 mA. Test multiple power supply, there is no short circuit, connect to the power supply, we feel a slight heat. So fumigate rosin in the upper part. It was found that power supply portion was hotter than other parts. After removing the display power, the current returns to normal.
After replacing the iphone power IC, the machine can be turned on smoothly and the fault is eliminated. This repair work is successfully completed.
If you need any help ,please contact us on www.vipprogrammer.com.
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