iPhone 6 Plus Water Damage and USB Charge Error

If you have an iPhone 6 plus, but it's dropped into the pool or you spill tea or coffe over it. No matter how cheerful you may be when you come across this situatuon, I'm afraid you can't calm down any more. Maybe you will fell desperate, but don't give up. One thing that you should keep in mind is that iPhone water damage does not necessarily mean your device is unusable, so you should leave panic on the side, and you should act. In this article, we are going to share some guides that will help you fix water damaged iPhone.

ISSUE:

After iPhone dropping into water, it is slow to charge  and later it cannot be charged.

SOLUTION:

1. Use a tester battery to offer the power and test the motherboard. USB current voltage meter shows that charging current jumps from 0.08~0mA. This phenomenon that there is no current when charging, but shows charging icon is called “battery drains”

2. The charging chip cannot output charging voltage normally, which causes the above problem. The frequent faulty points are USB chip damage or abnormal working condition of charging chip. 

3. Considering the inflow water in it, first we test the charging chip U2300. The charging management chip U2300 in bitmap is shown in picture 1-1.

4. The most frequently damaged parts in iPhone 6 and iPhone 6 Plus are voltage bootstrap capacitor C1402 and inductor L1401. The charging chip of iPhone 6S and iPhone 6S Plus is the same as iPhone 6.

5. Based on the repairing experience of iPhone 6 and 6 Plus, we observe the surrounding circuits of U2300 under microscope and find that voltage bootstrap capacitor C2300 darken seriously. Therefore, we replace the capacitor and turn on to charge. Trouble is removed.

6. In most of the cases, if iPhone 6S charging current is small or does not exist, we will replace USB Control IC and charging IC. If the problem is still the same, then we should check the charging voltage boost inductor and charging bootstrap capacitor.