iPhone X plug in charger mobile phone can not charge fault repair

Machine model: iPhone X
Malfunction: The mobile phone can’t be charged.

iPhone X plug in charger mobile phone can not charge fault repair Figure 1.

Maintenance process: Plug in the charger with charging icon, but it can’t be charged. Check i4 with Connect the power supply brain, and the battery data can be read, which is normal.

iPhone X plug in charger mobile phone can not charge fault repair Figure 2.

The charging booster Inductor, L3340 and L3341 of this machine, is easily damaged, which will also cause charging icon and no charging current.

iPhone X plug in charger mobile phone can not charge fault repair Figure 3.

There are traces of maintenance when disassembling the motherboard, and shielding cover on the vibrating power amplifier chip U5200 has traces of disassembly.

iPhone X plug in charger mobile phone can not charge fault repair Figure 4.

iPhone X plug in charger mobile phone can not charge fault repair Figure 5.

Motherboard separate, no abnormality was found under microscope. When the sealing glue around charging booster Inductor was processed, C3316 and C3391 Capacitor Inveracious Soldering fell off. Combined with the previous findings, we found that the back of the charging booster Inductor is the vibrating Inductor chip U5200, so it may be that the sealing element on the charging booster Inductor side was blown to Inveracious Soldering when the circuit on the vibrating Inductor chip U5200 side was repaired before.

iPhone X plug in charger mobile phone can not charge fault repair Figure 6.

iPhone X plug in charger mobile phone can not charge fault repair Figure 7.

iPhone X plug in charger mobile phone can not charge fault repair Figure 8.

Make up Capacitor of Inveracious Soldering.

iPhone X plug in charger mobile phone can not charge fault repair Figure 9.

Take the motherboard welding back.

iPhone X plug in charger mobile phone can not charge fault repair figure 10.

iPhone X plug in charger mobile phone can not charge fault repair Figure 11.

Installation test, charging returns to normal, function is normal, and maintenance is over. This fault is caused by C3316, C3391 Capacitor Inveracious Soldering without charging.