Huawei P40Pro does not boot (temporary damage causes it not to boot)

Huawei P40Pro does not boot (temporary damage causes it not to boot)

A Huawei p40Pro, the fault is not turned on, which is caused by temporary storage damage. How to repair it specifically? Let’s take a look at it in detail!

[Fault model] Huawei P40Pro

[Fault phenomenon] No boot.

[maintenance process] I received a machine sent by a customer for repair. The model is Huawei P40Pro, and the fault is that it does not turn on.

Huawei P40Pro does not boot Figure 1

willmobile phoneWhen the detached single board is powered on, it is found that the current normally jumps to 200mA after triggering, and it will stop. This kind of current looks like the current caused by CPU or temporary storage problems. After communicating with customers, the CPU will be redone directly. After the CPU is finished, it is found that the current of single CPU rises to 120 and falls back to 30mA to stop, but the current is set at 200mA again after installing the cover. This kind of current is likely caused by the damage of the upper cover. After removing the upper cover, it is found that the lower layer of single CPU is normal, so find a 999.

Huawei P40Pro does not boot Figure 2

Button screen test Huawei logo lights up.

Huawei P40Pro does not boot 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.