Glory 50 is seriously flooded and can’t start the machine for repair

Glory 50 is seriously flooded and can’t start the machine for repair.

First of all, the value of the clock is normal, that is, the internal work of the power supply is abnormal, which leads to the lack of power supply, and the CPU cannot work normally, which leads to the failure of starting the machine. After replacing the PM7325 power supply chip in the figure, the starting current is normal, but the screen does not display.

Machine model: Glory 50

Fault phenomenon: The customer described that the glory 50 mobile phone was seriously flooded and could not be turned on.

Glory 50 is seriously flooded and can’t start the machine for maintenance. Figure 1

Maintenance process:

Get the glory 50 mobile phone, press the power button, the mobile phone doesn’t respond, and it can’t be turned on. Disassemble the machine, take out the motherboard, power on the single board, and press the power-on key to increase the current by 1 mA. This current usually occurs because the power supply is not working or there is something wrong with the clock CPU.

First of all, the value of the clock is normal, that is, the internal work of the power supply is abnormal, which leads to the lack of power supply, and the CPU cannot work normally, which leads to the failure of starting the machine. After replacing the PM7325 power supply chip in the figure, the starting current is normal, but the screen does not display.

Glory 50 is seriously flooded and can’t start the machine for maintenance. Figure 2

This machine is a second repair machine repaired by a colleague. After observation, it was found that a chip was not installed. Open Xinzhizhao software, you can know the power supply chip that this chip just shows.

Glory 50 is seriously flooded and can’t start the machine for maintenance. Figure 3

Glory 50 is seriously flooded and can’t start the machine for maintenance. Figure 4

So I replaced a chip of the same model, and after it was installed, it could be turned on and displayed. The glory 50 failed to turn on the machine and was repaired here.

Glory 50 is seriously flooded and can’t start the machine for maintenance. Figure 5