iPhone x cannot be charged for repair

Malfunction model: iPhone X
Malfunction: The mobile phone can’t be charged.
Customer description saidmobileThe plug-in charger has a charging icon, but it can’t be charged.

iPhone x cannot be charged for repair Figure 1.
Maintenance process:
Plug in the charger with a charging icon, but it can’t be charged. First, check whether the cell phone can read the battery data. Connect the cell phone to Connect the power supply pool and check i4 to see if there is any battery data. The battery data can be read, which is normal.

iPhone x cannot be charged for repair Figure 2.

Excluding the non-charging caused by not reading the battery data, we all know that the two charging boosting Inductor of this machine L3340 and L3341 are easily damaged, which will also cause charging icon and no charging current.

iPhone x cannot be charged for repair Figure 3.

Next, disassemble the machine, take down the motherboard, and find that there are traces of maintenance, and shielding cover on vibration power amplifier chip U5200 has traces of disassembly.

iPhone x cannot be charged for repair Figure 4.

iPhone x cannot be charged for repair Figure 5.

Check the motherboard separate to see if the charging booster Inductor is damaged and cracked, and no abnormality is found under the microscope. Then, let’s test whether it is Inductor Inveracious Soldering. When the sealing glue around the charging booster Inductor is processed, C3316 and C3391 Capacitor Inveracious Soldering fall off. Combined with the above, we found that the charging booster Inductor.Then it may be that when the circuit of vibrating power amplifier chip U5200 was repaired before, the sealing element of charging and boosting Inductor was blown to Inveracious Soldering.

iPhone x cannot be charged for repair Figure 6.

iPhone x cannot be charged for repair Figure 7.

iPhone x cannot be charged for repair Figure 8.

Next, we make up Capacitor of Inveracious Soldering.

iPhone x cannot be charged for repair Figure 9.

Take the motherboard welding back.

iPhone x cannot be charged for repair Figure 10.

iPhone x cannot be charged for repair Figure 11.

Installation test.
Maintenance result:
The charging returns to normal, the function is normal, and the maintenance ends here. This fault is not charging caused by C3316 and C3391 Capacitor Inveracious Soldering.