IPhone13 does not boot (hard disk 2.6V short circuit)

An iPhone13 doesn't turn on, which is caused by a short circuit of 2.6V hard disk. What about short circuit? It's usually a common fault of hard disk with current, isn't it?mobile phoneWhat about the common fault of current? Let's take a look at the detailed maintenance process of the maintenance master below.

IPhone13 does not boot (hard disk 2.6V short circuit)

An iPhone13 doesn’t turn on, which is caused by a short circuit of 2.6V hard disk. What about short circuit? It’s usually a common fault of hard disk with current, isn’t it?mobile phoneWhat about the common fault of current? Let’s take a look at the detailed maintenance process of the maintenance master below.

[Fault model] iPhone13

[Fault phenomenon] No boot.

[Maintenance process] I received a machine sent by a customer for repair, the model is iPhone13, and the fault is that it does not turn on.

IPhone13 does not turn on Figure 1

Dismantling inspection shows that the motherboard has not been moved, and there is no leakage when it is powered on. The trigger current is about 1.6A This is definitely a short circuit, and the current is very similar to the common fault of hard disk. Dismantling the motherboard to check the power supply near the hard disk, the measured value is really 2.6V, and the resistance is 0. Touch it slightly, and the first capacitor in the upper right corner of the hard disk is a little hot, so it will be deducted directly.

IPhone13 does not turn on Figure 2

The resistance of this circuit is measured again and returned to normal, and the single board is normally triggered when it is powered on, and it can be turned on after the screen is buckled.

IPhone13 does not turn on Figure 3

[Maintenance result] After the motherboard is put into the shell, the mobile phone can be turned on normally. The functions of WiFi, Bluetooth, voice, charging, fingerprint, taking photos and making phone calls are all normal, and the maintenance is over.