Share How to Fix iphone 6 can't boot and Voltage Issue

1. How to Fix iPhone 6 can't boot and Voltage Issues
If your iPhone will not turn on and you’re looking for
help. It’s a problem that can be easy or difficult to fix,
depending on the cause. In this article, vipprog will help
you know the solution of iPhone 6 show Power current
From 110mA to 130mA can’t turned on.
ISSUE:
The iPhone has been dropped in water and is short circuit.
After removing some capacitors, the leaked current is
200mA. After replace power chip U1201, it does not leak
any more but it cannot be turned on. Current jumps
repeatedly from 110mA to 130mA.
SOLUTION:
1. Most of the case, this problem is often caused by
faulty circuits in touch screen chip U2402, power chip
U1202 and CPU upper board.
2. As customer replaced power chip before, we replace
its power chip to exclude the solder problem.
3. But the turn on current is still jumps repeatedly from
110mA to 130mA. According to the experience, in
watered iPhone, the damaged upper temporary storage is
caused by chip short circuit itself.

2. 4. Observing the temporary storage and the surrounding
area of CPU under microscope, we can see explosive tin
balls on the surrounding area of upper temporary storage.
Now iPhone can be turned on normally. The explosive
tin balls on upper temporary storage are shown in picture
1-1.
5. When it was first fixed, CPU shield cover was not
move, so we did not check the explosive tin balls on it.
For those chips that have been removed or replaced by
other maintenance men, we had better check whether the
explosive tin balls appear in CPU or temporary storage
chip on the upper board of CPU.