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Repair Guide: iPhone 6P No Baseband

We are going to fix an iPhone 6 Plus, the fault is that it has no baseband, there is no Modern Firmware on the iPhone Settings. how to repair the fault? Let's check in the article.


First of all, use phone opening tools to disassemble the iPhone, take out the iPhone motherboard, which looks good.

Put it under the microscope, carefully open the CPU shield by Titanium Alloy Tweezers, and then use digital multimeter to measure the resistance value of the bottom pins of the baseband power, the data tested is normal.

Remove the old iPhone baseband power, and then install the new iPhone baseband power, after replacement, test the iPhone, still no baseband.

Now, remove the shield of the iPhone baseband CPU. Under microscope, there are traces of corrosion in the iPhone amplifier power supply IC.

Use QUICK 861DW hot air rework station to heat iPhone amplifier power supply IC, and then take off the iPhone amplifier power supply IC.


Install the iPhone, and go the Settings, now the Moderm Firmware has been shown normally.

Finally, re-install the iPhone amplifier power supply IC, and then test it again, the iPhone baseband is there, the iPhone Moderm Firmware displays properly.

Summary:

Perhaps the iPhone amplifier power supply IC was been corroded by water, and then it pulls down the power supply voltage of the baseband.

Check more professional iPhone repair details on www.vipfixphone.com

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