iPhone 6 No Display Repair- Get solution here!

A customer sent us an iPhone 6 to repair, the fault described is iPhone 6 won't turn on. But after we test it, the real problem for this iPhone 6 is no display after boot. We can repair it!

After received the iPhone 6, use phone opening tools to disassemble it, and then take off the iPhone 6 logic board.

Observe the iPhone logic board, the iPhone logic board looks good, no trace of water-damaged or traces of external pressure are found.

Connect iPhone logic board to DPS DC power supply to test it, the boot current tested is normal, but the iPhone LCD screen still no display, always keep black.

Measure the resistance value of the J2019 by digital multimeter, the resistance value is normal. Now, measure the voltage, there are no positive and negative 5.7V, and we suspect that the U1501 is damaged.

Remove the U1501 by Titanium Alloy Tweezers, and then install the new one to the iPhone logic board. After replacement, measure it again, but the 5.7V still can't be measured, we think the boost has some problem.

Check iPhone schematic diagram in the WUXINJI Dongle, from the iPhone schematic diagram, we need to replace the C1529 and C1502. After replacement, measure the iPhone again, now the data is normal.

Assemble the iPhone, turn on iPhone to test, now the iPhone LCD screen displays normally, the repairs end!

Solved: iPhone 6 No display with logic board repairing

We received an iPhone 6 need to be repaired, the problem is that the iPhone 6 has no display when it is turned on.

First check whether the iPhone display socket has water damaged or virtual welding problem, after removing these problems, measure the resistance value of the socket by digital multimeter.

After measurement, we found the display socket 12 pin doesn't have resistance value. Check if the connected c2001 capacitance and fl2034 inductance have corrosion and virtual solder problems, the fl2034 inductance measured are no resistance value.

The fl2034 inductance passes through the U2403 6 pin tube and then to the CPU. Using a digital multimeter to measure the iPhone touch screen control IC U2403 of the corresponding bottom pins, the data tested are normal. So, we can eliminate the CPU problem. In this case, we need to solder jump wire.

Use QUICK 861DW hot air rework station to remove the cover, and then solder a jumper wire from the 6th pin of u2403 to a measuring point next to the screw hole，and then solidify it with green UV oil.

Install the iPhone and test it, the failure has been solved.