We received an iPad 5 from the customer. The customer said that the iPad 5 could not be turned on. He tried to restart or restore the iPad, but the fault still exists. How to fix this iPad?

First connect the iPad to the DC power supply, trigger it to test the current, and the current is stuck at around 40mA. Connect the iPad to the computer and restore the DFU, it will report an error 40. After entering the recovery mode, we found that the SN is not recognized.

Based on the error code, we judged this to be a circuit problem with the iPad Nand flash or iPad Nand flash. Remove the iPad 5 and remove the iPad board. We found that the iPad Nand flash memory has disassembly marks. Measure the 1.8 and 3.3V of the iPad Nand flash, both without power.

Check iPad schematic diagram via WUXINJI Dongle, we can know that power supply for both sets of circuits is converted from U3850.

Because the iPad Nand flash was disassembled, so we suspected that the power supply tube was virtual welding. Re-install it, the power supply is back to normal, but the iPad still won't turn on.

Now we need to use QUICK 861DW hot air reworks station to remove the iPad Nand flash, after remove the iPad Nand flash, we found some pins of the solder pad are missing.

Refill the solder pad, installing the iPad Nand flash to the iPad motherboard. Assemble the iPad and test it, now the iPad is turning on smoothly, the repairs end!

If you encounter problems that we have not mentioned, you can try to contact us at www.vipprogrammer.com and we will try to propose a solution for you.