Share How to Solve iphone 6 Motherbarod Problem

1. How to Solve iphone 6 Motherbarod Problem
Your iphone 6 turn into black when you work or study,
you can feel broken heart. And then, what can you do?
Wait it turn well? Or send it to the repairman? It can
waste your time, if you can check phone by yourself will
save you a lot of time.
PROBLEM:
IPhone 6 shows nothing after being turned on and the
screws on the motherboard are gone.
SOLUTION:
1. After teardown this iPhone, we find that someone has
twisted off screw BS2503. The real location of screw
BS2503 is shown in BELOW picture.

2. Observing under a microscope, the screw is shown in
below picture.
2. Getting a useless motherboard, scrape the PCB under
the screw off slowly under a microscope. We can see
there is a line under it, as shown in below picture.
3. Comparing it to a brand new motherboard and
checking the bitmap schematic diagram, we know this
line is the power supply circuit used between main power
chip and PP1V8_LCM_CONN of LCD socket, as shown

3. in below picture.
4. Solder the broken circuit with a copper wire and
connect display screen to test. Now iPhone can display
normally. Paint some UV Solder Resist to make it
insulated and use a UV glue Curing LED Lamp to
solidify green UV Solder Resist, as shown in below
picture.