Repair Guide: iPhone 7P stuck in white Apple and no vibration
The customer sent us an iPhone7 Plus, the fault description was " stuck on the white apple", unable to enter the system, and the iPhone did not vibrate. How can we solve this phenomenon?
According to our previous experience, the drop of the pad on the bottom of the audio chip may cause the white apple to get stuck on the system. Now we use the BGA Chip Burin Graver Scraper tool to remove the chip glue. Then, remove the large audio chip. And find that there is a drop after processing the pad. As shown in picture.
The points found after comparing the point bitmap are all empty points and grounded points. Now, you can refer to ZXW DONGLE Circuit Diagram. As shown in picture.
After reinstalling the audio chip,using a 3.5X-90X Stereo Zoom Microscope, so you can the procession more clearly. The machine enters into the system normally. We founfd that the vibration function is invalid in the process of testing. Observing the iphone motherboard and finding that the M2800 inductor burned one pin.As shown in pictures.
Since the M2800 in stock is used up, it is replaced by a separate iphone inductor.
Entering the system to test the vibration function maintenace condition after installing the inductor. If there are no other problems after testing, the repair is over.As shown in picture.
If you have any problem, welcome to consult us on www.vipfixphone.com.
According to our previous experience, the drop of the pad on the bottom of the audio chip may cause the white apple to get stuck on the system. Now we use the BGA Chip Burin Graver Scraper tool to remove the chip glue. Then, remove the large audio chip. And find that there is a drop after processing the pad. As shown in picture.
The points found after comparing the point bitmap are all empty points and grounded points. Now, you can refer to ZXW DONGLE Circuit Diagram. As shown in picture.
After reinstalling the audio chip,using a 3.5X-90X Stereo Zoom Microscope, so you can the procession more clearly. The machine enters into the system normally. We founfd that the vibration function is invalid in the process of testing. Observing the iphone motherboard and finding that the M2800 inductor burned one pin.As shown in pictures.
Since the M2800 in stock is used up, it is replaced by a separate iphone inductor.
Entering the system to test the vibration function maintenace condition after installing the inductor. If there are no other problems after testing, the repair is over.As shown in picture.
If you have any problem, welcome to consult us on www.vipfixphone.com.
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