Repair iPhone 6 battery leaks error after water damaged

The iPhone 6 accidentally fell into the water, and then the battery use time becomes very short, even though it is full of power, but after one night standby, it turns zero. In this case, your phone just like bubble, you can't use it, because it shuts down anytime. If your phone is experiencing this, please don't be sad, you are in right place. This page will help you to fix it.

Repair steps

1. Disassemble the iPhone 6 by phone opening tools, remove the mainboard, we can find that it is obviously watered. The water inflow label becomes red, as shown in picture 1.

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2. Tar down the shield cover from motherboard, and we can find that motherboard components is eroded and goes mouldy. Use board-washing water to clean the eroded places and pry up the badly eroded and discoloured capacitors (picture 2).  Use heating platform to dry the motherboard.

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3. After drying the motherboard, connect the adjustable DC power supply. The current shows 16mA. While before triggering on the normal motherboard of iPhone 6, four- number ammeter shows 0.000A. Showing 0.016mA suggests that it leaks electricity. Based on the working principles of iPhone, only PP_BATT-VCC and PP_VCC_MAIN have electricity in the case of not pressing power button. Thus, the electricity leakage happens at the voltage of the two circuits. Because many components are connected at the two circuits, we have to analyze them separately. First measure PP_BATT-VCC. The circuits that connect with PP_BATT_VCC in schematics diagram is shown in yellow part in picture 3.

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4. Remove Q1403 and U1401 to cut the circuit of PP_VCC_MAIN. Energize motherboard and find no electricity, so the problems happen at PP_VCC_MAIN. In general, badly electricity leakage problems can be judged by rosin. However, the electricity leakage happens at this motherboard is not serious. No components generate heat obviously, so rosin is useless. We have to tear them one by one. At the bitmap, we can see that many components are at this circuit. The circuits that connect with PP_ VCC_MAIN in bitmap is shown in yellow part in picture 4.

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5. Remove the capacitors at this circuit first and then remove the chips that are connected with the capacitors. When remove the ascending frequency chip U5302_RF of the near field communication, electricity leakage disappears. The board after removing the voltage boost chip, flashlight chip and display chip is shown in picture 5.

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6. Assemble the previous removed parts and install iPhone, then test it, the battery can back to normal work, the error has been solved.

Tips

• when you start to fix it, you need to prepare the phone repair tools and the clean place, maybe you can try Vipprogrammer, i used to buy it here, all the tool with good quality.

• The ascending frequency chip U5302_RF (picture 6) of the near field communication cause electricity leakage. When you work on it, you should be very carefully and patiently.

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