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Showing posts from September, 2018

iPhone 8 Plus boot failure- Fix it here!

The iPhone 8 Plus has boot failure, it can't be turned on. Can we fix this dead iPhone 8P? Yes, we can fix it here! After try some simple software solutions, such as force restart iPhone, update IOS, restore iPhone 8P, but the iPhone 8 Plus still not turning on. Now we need to check iPhone hardware aspect. First, we need to disassemble the iPhone 8P.  Use phone opening tools  to disassemble the iPhone, we found the iPhone motherboard is already badly deformed. Second, measure the iPhone 8P. Connect iPhone motherboard to the DC power supply , it leaks 280mA. For the badly dropped damaged iPhone, we need to check iPhone motherboard to see if there are visible signs of damage to its appearance. Third, observe iPhone 8P Put iPhone motherboard under the Stereo Zoom Microscope   to observe, we found the U3700 camera power supply IC is cracked, use tweezers to remove this IC first. After remove this U3700 IC , connect iPhone motherboard...

Repair Guide: iPhone 6S display screen half black half light failure

The iPhone 6S display screen half black and half light during the normal use, after restart the iPhone 6S, the iPhone display screen problem still there. Here is the repair guide for it.  Disassemble the iPhone 6S, take out the iPhone motherboard . First check the display base J4200, we didn't find any problem from the appearance. When the resistance to the ground is measured by a Fluke digital multimeter , the resistance values of 1# and 3# are the same, and there is a connection between 1# and 3# by measuring, it is judged that there is a tin link between the two pin. Clean the black glue around the base, tin ball is seen between the two circuit, leading to the two circuit connecting. This is the main cause of the failure of half black screen. Use BGA graver blade to gently remove the tin ball , measure it again, all data tested is normal. Now, install the iPhone 6S, press the iPhone power button to turn it on, the iPhone display screen displays...

iPhone 6 No Sound From The Receiver—How To Fix?

 The iPhone has no sound from the receiver, when we answer the call, there is no voice, but we are sure the someone's talking at the other end of the phone.  Receiver problem is a common problem for iPhone, it's generally caused by iPhone audio part.  Now, we need to know how to fix it. Use phone opening tool to disassemble the iPhone 6, take out the iPhone motherboard . Observe the iPhone motherboard. Observe this iPhone 6 closely with our eyes, the iPhone motherboard has been repaired, the motherboard has traces of water. Remove the iPhone big audio IC. Put iPhone motherboard under the Stereo Zoom Microscope , and then use tweezers to remove the iPhone big audio IC. After remove the iPhone big audio IC , we found the bottom pin was corroded. Use the BGA remove graver to clean the corroded part, and then   use QUICK 861DW  hot air rework station to solder the jumper wire on it, and then apply some green UV oil to fix it. ...

2018 Latest Solution for iPhone 6P no baseband problem

The iPhone 6 Plus has no baseband problem, what's trouble? When check iPhone Modem Firmware on the Settings,  there is nothing.  Here is the 2018 latest solution for this iPhone 6P no baseband problem.  Disassemble the iPhone 6 Plus by phone opening tools, take off the iPhone motherboard. Put iPhone motherboard 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. Replace the new iPhone baseband power, and then test it, still not found the  Modem Firmware, which means the iPhone baseband CPU still have the problem.  Now, remove the shield of the iPhone baseband CPU . Under Stereo Zoom 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...

Best solution for iPhone 6S won’t turn on problem( hardware)

Here is an iPhone 6S with won't turn on problem, it's caused by hardware problem. Actually, the iPhone not turning on is common  problem. If you are facing this problem, first you should try software solutions, such as update IOS, restore iPhone. After we tried these software solutions, this iPhone 6S still won't turn on, then we need to check hardware problem. Disassemble the iPhone 6S by phone opening tools , connect iPhone motherboard to the DPS DC power supply , the boot current stuck in 50mA, which is abnormal. Remove the iPhone motherboard,  check the appearance of iPhone motherboard, there is no water damage or drop damaged phenomenon.   Put it under the Trinocular Stereo Microscope , and observe carefully, we found there is a bruise next to the iPhone Nand flash  that hit by screws. Scrape the circuits on the bottom by BGA graver blade , and then apply some green UV oil  to it, blow it by QUICK 861DW  hot air rework station...

Get real solution for iPhone 6 Plus no backlight no display problem

Here we can get real solution for iPhone 6 Plus no backlight and no display problems.  This iPhone 6 Plus LCD screen has no display, after try software solutions, the iPhone 6 Plus still no display, we need to fix it with hardware solution.  Firstly, we need disassemble the iPhone 6 Plus by using phone opening tools, and then remove the iPhone motherboard.  After observing the iPhone motherboard under the Integrated Microscope , we found the iPhone  motherboard has been repaired once.   The iPhone display touch IC of the iPhone motherboard, iPhone light control IC   U1501 and NUT column all have been removed.  Continue to check, we found the  bottom of the NUT column on the iPhone motherboard has been hit by a long screw.  Use QUICK 861DW  hot air rework station and BGA remove graver  to scrape it, there is no disconnection phenomenon. Use digital multimeter to measure the  resistance value for t...