Huawei P30mobile phoneYou can’t start the machine for maintenance after a fall

Huawei P30mobile phoneYou can’t start the machine for maintenance after a fall

The customer described that the mobile phone stopped turning on after heavy fall. After being overhauled by the master, the CPU was directly locked, and the fault was perfectly repaired.

[Machine model] Huawei P30

[Fault phenomenon] No boot.

[Maintenance process] I received a P30 from a customer. The customer said that the phone wouldn’t turn on when it fell, and it didn’t respond when it was charged. Send it to us to see if it can be repaired.

Huawei P30 does not boot Figure 1

After receiving the machine, the appearance is not damaged, and it seems that the fall is not too serious. Then let’s take out the motherboard directly and look at the current. It is normal for the single board to start and take off with regulated current, but it is set at 100ma. This small current power supply has already worked, and it is not the cover current. Just lock the CPU directly and redo it.

Huawei P30 does not power on Figure 2

After finishing the CPU current, it went up, and the Huawei logo was lit up for screen testing. It seems that the fault has been eliminated.

Huawei P30 does not power on Figure 3

[Maintenance result] Install the motherboard into the mobile phone, and start the test. The mobile phone is normally booted into the system, and the functions such as charging, WiFi, voice, compass, vibration and telephone are normal. The maintenance is over here.

This case was originally provided by Xunwei Quick Repair Flagship Store, and it is forbidden to reprint without authorization!