iphone 7 dead repair after botched audio IC repair AppleFix Hamilton
We received this iphone from one of our dealers, the iphone was not
turning on what we discovered that someone tried to fix the audio ic on this
iphone and while doing that they damaged sdram 1.8Volt line.
We all know if RAM is missing from computer it will not turn on. Same
is with iphone if No power to RAM is going it will not process the data and no
communication between RAM, Storage NAND and processor and iphone will not turn
on. Before we started looking into logicboard we tried to turn iphone on by DC
power supply.
The reading from DC power supply can give crucial indications what
might be wrong with iphone. Watch our previous videos to know hoe DC power
supply reading give important information on where on the logicboard problem
could be . Link to our youtube channel click here
Expert iphone repair in Hamilton New Zealand.
Physical inspection of the iphone 7 board we see flux lying around
audio IC. Other than that board look fine. Checked the volts coming out from
audio IC and figured out PP1V8 line is missing volts. Decided to remove the
audio IC. Once the audio IC is removed find out 1.8Volt line pad on is missing.
Also find out that they jumped wire audio codec line but the jum wire they used
was thick. These type of audio IC repair jump diameter should be .01mm thicker
than that ic might not sit or solder properly.
These type of iphone dead or logicboard repairs require knowledge and
skills of reading schematic and board view and understanding of electronic
components.
We replaced jump wire with 0.01mm and next we have to fix missing
1.8vold pad. Luckily we find the traces of the missing pad and used 0.02MM
solder ball to make the pad.
iphone 7 dead repair after botched audio IC repair AppleFix Hamilton
After making the solder ball pad we checked the connectivity between
pad and the next component attached to it by multimeter in connectivity mode.
Installed new audio IC and iphone bootup normally.
AppleFix Hamilton New Zealand 125 wardt street hamilton are iphone
repair expert in hamilton waikato. We also offer logicboard repair courses
Skill development Job Oriented short Training course. In Latest
Gadgets, Smart Mobile Phones, Tablets, Laptops, Desktops, gaming gadget,
Playstation, Xbox Repair Technology.
This course is aimed / focused, to teach you to fix most common repairs
an electronics repair shop could face in a practical working environment.
Start your own business or increase your chances to get job quickly. For more
info on practical logicboard repair courses in new zealand click here
We also offer mail in repair if you live out of hamilton to send your
device read info here
Visit www.applefix.co.nz or call 078394111 or 078394188
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