iPhone 6 Plus Screen No Display,Here is repair !
We received an iPhone 6 Plus from our customer, the faulty described is that this iPhone 6 Plus screen doesn't display, after replacing the iPhone display power IC, the problem is still exist, and they don't know how to fix, so they send iPhone 6 Plus to us. The following is the repair steps.
First of all, disassemble the iPhone 6P with the phone opening tools, carefully take out the iPhone motherboard.
Put iPhone motherboard under the Stereo Zoom Microscope and then use QUICK TS1200A hot air gun to re-weld the iPhone display power IC that has been replaced by co-worker, and then test it, but the iPhone screen is still not display.
Now use digital multimeter to measure the power output voltage -5.7V and 5.7V of the iPhone display IC, there is no output, which means the iPhone display power IC doesn't work properly.
Check U1501 working principle with the WUXINJI Dongle, we know that if the iPhone display power need works properly, it must have 3 conditions, they were power supply, reset and boot signal. Measure the L1519, there is 4.2V main power supply, the reset signal 1.8V is also normal. When measure the boot signal, no voltage was found, this is abnormal.
Check FL2035, it's disconnected, remove it, and then short connect it with jumper wire.
Installed iPhone 6P, now the iPhone is displayed normally, the problem has been solved successfully.
Do you want to learn more skills about repair iPhone, please contact us on www.vipprogrammer.com.
First of all, disassemble the iPhone 6P with the phone opening tools, carefully take out the iPhone motherboard.
Put iPhone motherboard under the Stereo Zoom Microscope and then use QUICK TS1200A hot air gun to re-weld the iPhone display power IC that has been replaced by co-worker, and then test it, but the iPhone screen is still not display.
Now use digital multimeter to measure the power output voltage -5.7V and 5.7V of the iPhone display IC, there is no output, which means the iPhone display power IC doesn't work properly.
Check U1501 working principle with the WUXINJI Dongle, we know that if the iPhone display power need works properly, it must have 3 conditions, they were power supply, reset and boot signal. Measure the L1519, there is 4.2V main power supply, the reset signal 1.8V is also normal. When measure the boot signal, no voltage was found, this is abnormal.
Check FL2035, it's disconnected, remove it, and then short connect it with jumper wire.
Installed iPhone 6P, now the iPhone is displayed normally, the problem has been solved successfully.
Do you want to learn more skills about repair iPhone, please contact us on www.vipprogrammer.com.
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