Wednesday, October 24, 2018

iPhone 7 Plus Audio / Sound problem

iPhone 7 and 7 Plus having audio or sound problem isn't rare.

When Audio IC is not working properly.
Symptoms:
  • Unable to record voice
  • Other party can't hear you while calling
  • Phone is lagging and slow
  • No Sound
One of it or some of those.. or all symptoms above you got, it's consider LAST stage of audio "cancer".

In our iPhone repair community, we called it iPhone 7 Audio IC Disease. 

iPhone 7 Sound Problem
iOS 12 would show this message

Why it happened?
Short answer: Drop it too hard, or bend.. One of the pad below the Audio chipset is broken.



"Advise: DO NOT send to normal shop to repair this The audio ic is located behind Baseband and very near CPU. You don't want the dealer ended up to tell you now got another problem appear or totally became unable to POWER ON. 
Of so many case that i repaired their failed attempted job. They "accidentally" overheated the components around. They either caused the iPhone became No Service (Baseband shorted) or device became unable to power on (CPU shorted).

Ended up at higher cost repair and time wasted."
Today we got an iPhone 7 Plus had this issue.



Let's take off the IC and look closer with microscope



iphone 7 c12
99% of audio disease is because of this pad broken. Even it's not missing, we MUST still need to build new track for it. I saw a lot technician didn't rebuild this track and the customer keep coming back with same problem.

Technical term of this fix is "jumper".


This is very important line that would cause totally malfunction of audio or sound.
C12 - I2S_AP_TO_CODEC_MCLK


iPhone 7 Plus audio ic repair
So this is the fix that must apply before we put Audio IC back


iPhone 7 audio sound ic repair
We still can see the green PCB glue on that area after repaired. If this iPhone suffer another dropping damage again, it would still working fine. The screen should break first before this problem reoccur.



Done!

 Update: We uploaded a video into YouTube "5 Dec 2018"

Friday, October 19, 2018

iPhone 6 Error 9

Countless people asking me how much is the motherboard..

"Apple center told me my motherboard is spoiled, it's beyond repair. Need pay them Rm12xx to replace whole device. Ridiculous!"

Before you buy the motherboard.. Please send the device to my shop and i check for you is it can be repairable.

90% of motherboard problem are can be repaired. 

Example: A motherboard is RM 650. Motherboard repair price between RM 200 to RM 400. A second hand of  whole iPhone is RM 750.

We always quote you a fair price that lower than a board replacement... and much hell cheaper than Apple Center offer you device replacement at ridiculous price!!

"By the way, technically it's called Logic Board. Not motherboard. Motherboard is in the PC which you can plug in third party hardware. Logic Board on other hand, you cannot. Plug in their designed hardware only."

So today topic is iPhone 6 that is stuck in Recovery Mode. It failed to restore and show Error 9 in iTunes. Customer been to some shops telling them same story that it can't be repair.

Let me show you how is the professional repair it.... in my shop, of course.

iPhone 6 Stuck at Recovery Mode. Most end user like to say Cable Mode or iTunes Logo Mode

Restore failed. A code appear. it's Error 9. 

No matter how many PC or Mac you use to restore it.. it ended up with same error.

Error 9 is indicated NAND or NAND circuit failure.  NAND is the memory chip. Some people like to say HDD or Hard Disk. But in Apple schematic, they called it NAND.

We notice first bad news is "all the memory data inside" probably gone. Especially customer attempted to restore it and it failed. 

Put in our board onto his device to TEST every parts such as  LCD, camera, buttons, battery, ports....
You don't want after we repaired the board and turn on found another problem then paying more.. Right?

Then call customer and quote him a price after we inspect the board damaged under the MICROSCOPE.

That's how professional checking procedure. Not Genius Bar that just telling you the Logicboard is spoiled and you pay whole device price. They don't even know what's wrong is the logicboard and which chipset or what circuit failed. They sure didn't check every parts of the device.
Wasted your time.

Apple trained them nothing in repairing except follow procedure of reading script to tell you what to pay.
Want more similar story? here is the Youtube link - Genius Bar caught ripping customer



Back to topic..

I found the NAND is the only issue instead of CPU. So by replace it can solve the problem.

Obviously this iPhone housing and LCD changed at other place before..
iPhone NAND tool
We use special tool that can read/write NAND. This tool is not cheap. Cost one thousand above and it just only works for specific models. Not every iPhone.  
Tried to read the old NAND and it failed. So we put in new NAND to reprogram Serial Number, Address...
The iPhone won't be able to activate if we don't do this. Activate process is needed go through Apple Server and they will verify the device Serial Number, Wifi and Bluetooth address.

We also need to purchase the INFO of this device to reprogram it. It might take days to wait from server provide us the report of this iPhone.



I must need to blackmarked all the infomation.. Who knows Apple might saw this and blacklist this iphone from server.. So the user might ended up unable to activate or network blocked. 
Once re-program done. Soldered the NAND back on the logicboard.

Voila~ Done!

 Bonjour ~

All this kind of works require real professional repairer and tools. Special training already cost more than 20k. Tools cost above 20k and still need purchase tools for coming iPhone..

That is why it's not available at Face 2 Face or whatever Food Truck and Van on-site service. Those are DIY repairer. Plug and play stuff only..


Visit real professional to do the board repair directly. Not pass over to some guy and wait for weeks.




Saturday, October 6, 2018

Memory Storage Upgrade Service



Do you still have 16 GB iPhone?
You can consider upgrade your memory without buying new iPhone..

Today we done another iPhone 6 Plus.. i really can't imagine how 16GB is torturing user..
Glad this customer upgrade it to 128 GB in our shop




Done!! Upgraded to 128GB and iOS 12

There is a saying in China.. an iPhone 16 GB is just beggar version of iPhone.乞丐版 iPhone vs 豪华版 iPhoneBeggar iPhone vs Luxury iPhone


FAQs:


Question: After we upgraded the storage, can i still upgrade the iOS?
Answer: Yes, it can. From iPhone 5 to iPhone X, so far none have problem. Apple doesn't check or care the capacity of your device. But their server will check the Serial Number, IMEI to make sure it's their product.

Question: What if my device got problem later?
Answer: There will be one month warranty for it. But warranty doesn't cover problem like LCD screen, buttons or camera.

Question: If you so confident it won't get any problem, then why not you provide longer time warranty?
Answer: Because we never know how user use their iPhone. Not confident on how they take care their iPhone. They can even kill the iPhone with wrong charger also.  That's why we will check all function and inspect the board before proceed, so that we can eliminate potential problem too.

Question: Do you have price listed in web site?
Answer: Sorry, we can't put a list of fixed price on here because price is floating according market. Memory chip price is floating like other. Just like computer HDD, their price also not fixed. Up and down sometimes.

Question: How long does it take?
Answer: It's between two to three hours if appointment made. Otherwise then just need one day.

Question: Do i need to backup?
Answer: Yes. We will need to erase/format the iPhone. By the way if we do the backup for you, the process will extend another two hours or more. So it's best you backup into your PC before you come.

Question: Do i need to turn off iCloud or password?
Answer: Yes. After re-format with new memory. Activation will require previous ID if it doesn't turn off before we format.


We use NAND writer that Apple center doesn't have. How is this possible? Yes, because they didn't invent or product the memory chip. They get their parts from Toshiba, Sandisk, Hynix... 
We must have multiple NAND writer for different models. Not only one.