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HUAWEI P30 screen is not displayed.
Model: HUAWEI P30
Malfunction: the screen of the mobile phone does not display.
Repair process: After getting the phone, I found that the back shell of the phone has been removed, and I can directly see the motherboard. Press the power-on button, the screen of the mobile phone will not be displayed, and the phone cannot be turned on.
HUAWEI P30 screen is not displayed figure 1.
Connect the mainboard to the repair power supply, and then turn it on. It is found that the startup current is normal, but the display screen does not show it. This situation is either caused by the display screen or the abnormal condition of the display screen.
The measured ground value of the display seat is OL. Check that there are no missing parts, corrosion and broken wires around the seat. It should be the virtual welding of the display seat, so add welding to the display seat.
HUAWEI P30 screen is not displayed figure 2.
Put the motherboard back inside the phone, press the power-on button, the phone can be turned on normally, the screen can be displayed normally, and the fault can be repaired perfectly.
HUAWEI P30 screen is not displayed figure 3.
