WiFi does not work on iPhone 6 , how to repair it?
We received an iPhone 6, the customer described that no matter how to try, WIFI can not be opened. The customer said that he is more anxious to use the phone, so we need to fix it quickly. After deleting WIFI, the activation screen appears. Connection test We found that the iPhone 6 WIFI chip was not installed, the data cable was not installed in the startup activation mode, and when we connected the Aisi assistant, we found the serial number without the baseband.
It enters into the activation mode again after using for a while , which is usually baseband power output short circuit based on our usual maintenance experience. Considering the WIFI removal situation, associated with the WIFI edge of the GPS power amplifier has a voltage output baseband power.
Measure with a FLUKE digital multimeter, it's PP_LDO13 as shown in picture. As shown in picture.
After eliminating the short circuit, the result is that the C5129 is broken, the resistance is back to normal, connecting Aisi assistant we find the baseband out. Using Ace assistant to skip WIFI, activate the backward menu again and use it properly. As shown in picture.
Now let's fix WIFI. It's OK to measure the resistance. Install it on a WIFI and find it still hard to turn on. After borrowing 1.8V to reset, it is found that the WIFI address appears, but still can not turn on it. Use the Digital Storage Oscilloscope to measure the 32K clock test point we found no waveform.
The clock is from the main power source, so we replace the main power to measure again.
Now the waveform appears, test WIFi again, the fault is successfully solved. As shown in picture.
If want to learn more information to repair your iPhone，please visit www.vipfixphone.com.
It enters into the activation mode again after using for a while , which is usually baseband power output short circuit based on our usual maintenance experience. Considering the WIFI removal situation, associated with the WIFI edge of the GPS power amplifier has a voltage output baseband power.
Measure with a FLUKE digital multimeter, it's PP_LDO13 as shown in picture. As shown in picture.
After eliminating the short circuit, the result is that the C5129 is broken, the resistance is back to normal, connecting Aisi assistant we find the baseband out. Using Ace assistant to skip WIFI, activate the backward menu again and use it properly. As shown in picture.
Now let's fix WIFI. It's OK to measure the resistance. Install it on a WIFI and find it still hard to turn on. After borrowing 1.8V to reset, it is found that the WIFI address appears, but still can not turn on it. Use the Digital Storage Oscilloscope to measure the 32K clock test point we found no waveform.
The clock is from the main power source, so we replace the main power to measure again.
Now the waveform appears, test WIFi again, the fault is successfully solved. As shown in picture.
If want to learn more information to repair your iPhone，please visit www.vipfixphone.com.
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